qemu.git
8 months agotarget/ppc: Move get/set_avr64 functions to vmx-impl.c.inc.
Chinmay Rath [Tue, 9 Jul 2024 11:43:39 +0000 (17:13 +0530)]
target/ppc: Move get/set_avr64 functions to vmx-impl.c.inc.

Those functions are used to ld/st data to and from Altivec registers,
in 64 bits chunks, and are only used in vmx-impl.c.inc file,
hence the clean-up movement.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Chinmay Rath <rathc@linux.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agotarget/ppc: Move VSX fp compare insns to decodetree.
Chinmay Rath [Tue, 18 Jun 2024 08:58:31 +0000 (14:28 +0530)]
target/ppc: Move VSX fp compare insns to decodetree.

Moving the following instructions to decodetree specification:

xvcmp{eq, gt, ge, ne}{s, d}p : XX3-form

The changes were verified by validating that the tcg-ops generated for those
instructions remain the same which were captured using the '-d in_asm,op' flag.

Signed-off-by: Chinmay Rath <rathc@linux.ibm.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agotarget/ppc: Move VSX vector storage access insns to decodetree.
Chinmay Rath [Tue, 18 Jun 2024 08:58:30 +0000 (14:28 +0530)]
target/ppc: Move VSX vector storage access insns to decodetree.

Moving the following instructions to decodetree specification:

  lxv{b16, d2, h8, w4, ds, ws}x   : X-form
  stxv{b16, d2, h8, w4}x          : X-form

The changes were verified by validating that the tcg-ops generated for those
instructions remain the same, which were captured using the '-d in_asm,op' flag.

Signed-off-by: Chinmay Rath <rathc@linux.ibm.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agotarget/ppc: Move VSX vector with length storage access insns to decodetree.
Chinmay Rath [Tue, 18 Jun 2024 08:58:29 +0000 (14:28 +0530)]
target/ppc: Move VSX vector with length storage access insns to decodetree.

Moving the following instructions to decodetree specification :

        {l, st}xvl(l)           : X-form

The changes were verified by validating that the tcg-ops generated by those
instructions remain the same, which were captured using the '-d in_asm,op' flag.

Also added a new function do_ea_calc_ra to calculate the effective address :
EA <- (RA == 0) ? 0 : GPR[RA], which is now used by the above-said insns,
and shall be used later by (p){lx, stx}vp insns.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Chinmay Rath <rathc@linux.ibm.com>
[np: Fix 32-bit build]
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agotarget/ppc: Moving VSX scalar storage access insns to decodetree.
Chinmay Rath [Tue, 18 Jun 2024 08:58:28 +0000 (14:28 +0530)]
target/ppc: Moving VSX scalar storage access insns to decodetree.

Moving the following instructions to decodetree specification :

lxs{d, iwa, ibz, ihz, iwz, sp}x : X-form
stxs{d, ib, ih, iw, sp}x : X-form

The changes were verified by validating that the tcg-ops generated by those
instructions remain the same, which were captured using the '-d in_asm,op' flag.

Signed-off-by: Chinmay Rath <rathc@linux.ibm.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agotarget/ppc: Move VSX logical instructions to decodetree.
Chinmay Rath [Thu, 23 May 2024 09:48:21 +0000 (15:18 +0530)]
target/ppc: Move VSX logical instructions to decodetree.

Moving the following instructions to decodetree specification :

xxl{and, andc, or, orc, nor, xor, nand, eqv} : XX3-form

The changes were verified by validating that the tcg ops generated by those
instructions remain the same, which were captured with the '-d in_asm,op' flag.

Signed-off-by: Chinmay Rath <rathc@linux.ibm.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agotarget/ppc: Move VSX arithmetic and max/min insns to decodetree.
Chinmay Rath [Thu, 23 May 2024 09:48:20 +0000 (15:18 +0530)]
target/ppc: Move VSX arithmetic and max/min insns to decodetree.

Moving the following instructions to decodetree specification:

x{s, v}{add, sub, mul, div}{s, d}p : XX3-form
xs{max, min}dp, xv{max, min}{s, d}p : XX3-form

The changes were verfied by validating that the tcg ops generated by those
instructions remain the same, which were captured with the '-d in_asm,op' flag.

Signed-off-by: Chinmay Rath <rathc@linux.ibm.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agotarget/ppc: Move ISA300 flag check out of do_helper_XX3.
Chinmay Rath [Thu, 23 May 2024 09:48:19 +0000 (15:18 +0530)]
target/ppc: Move ISA300 flag check out of do_helper_XX3.

Moving PPC2_ISA300 flag check out of do_helper_XX3 method in vmx-impl.c.inc
so that the helper can be used with other instructions as well.

Signed-off-by: Chinmay Rath <rathc@linux.ibm.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agotarget/ppc: Improve VMX integer add/sub saturate instructions.
Chinmay Rath [Thu, 23 May 2024 09:44:54 +0000 (15:14 +0530)]
target/ppc: Improve VMX integer add/sub saturate instructions.

No need for a full comparison; xor produces non-zero bits for QC just fine.

Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Chinmay Rath <rath.chinmay@linux.ibm.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agotarget/ppc: Move VMX integer add/sub saturate insns to decodetree.
Chinmay Rath [Thu, 23 May 2024 09:44:53 +0000 (15:14 +0530)]
target/ppc: Move VMX integer add/sub saturate insns to decodetree.

Moving the following instructions to decodetree specification :

v{add,sub}{u,s}{b,h,w}s : VX-form

The changes were verified by validating that the tcg ops generated by those
instructions remain the same, which were captured with the '-d in_asm,op' flag.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Chinmay Rath <rathc@linux.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agopnv/xive2: Dump more END state with 'info pic'
Frederic Barrat [Wed, 24 Jul 2024 21:21:30 +0000 (16:21 -0500)]
pnv/xive2: Dump more END state with 'info pic'

Additional END state 'info pic' information as added.  The 'ignore',
'crowd' and 'precluded escalation control' bits of an Event Notification
Descriptor are all used when delivering an interrupt targeting a VP-group
or crowd.

Signed-off-by: Frederic Barrat <fbarrat@linux.ibm.com>
Signed-off-by: Michael Kowal <kowal@linux.vnet.ibm.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agopnv/xive2: Refine TIMA 'info pic' output
Frederic Barrat [Wed, 24 Jul 2024 21:21:29 +0000 (16:21 -0500)]
pnv/xive2: Refine TIMA 'info pic' output

In XIVE Gen 2 there were some minor changes to the TIMA header that were
updated when printed.

Signed-off-by: Frederic Barrat <fbarrat@linux.ibm.com>
Signed-off-by: Michael Kowal <kowal@linux.vnet.ibm.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agopnv/xive2: Move xive2_nvp_pic_print_info() to xive2.c
Frederic Barrat [Wed, 24 Jul 2024 21:21:28 +0000 (16:21 -0500)]
pnv/xive2: Move xive2_nvp_pic_print_info() to xive2.c

Moving xive2_nvp_pic_print_info() to align with the other "pic_print_info"
functions.

Signed-off-by: Frederic Barrat <fbarrat@linux.ibm.com>
Signed-off-by: Michael Kowal <kowal@linux.vnet.ibm.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agopnv/xive2: Fail VST entry address computation if table has no VSD
Frederic Barrat [Wed, 24 Jul 2024 21:21:27 +0000 (16:21 -0500)]
pnv/xive2: Fail VST entry address computation if table has no VSD

Fail VST entry address computation if firmware doesn't define a descriptor
for one of the Virtualization Structure Tables (VST), there's no point in
trying to compute the address of its entry.  Abort the operation and log
an error.

Signed-off-by: Frederic Barrat <fbarrat@linux.ibm.com>
Signed-off-by: Michael Kowal <kowal@linux.vnet.ibm.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agopnv/xive2: Set Translation Table for the NVC port space
Frederic Barrat [Wed, 24 Jul 2024 21:21:26 +0000 (16:21 -0500)]
pnv/xive2: Set Translation Table for the NVC port space

Set Translation Table for the NVC port space is missing.  The xive model
doesn't take into account the remapping of IO operations via the Set
Translation Table but firmware is allowed to define it for the Notify
Virtual Crowd (NVC), like it's already done for the other VST tables.

Signed-off-by: Frederic Barrat <fbarrat@linux.ibm.com>
Signed-off-by: Michael Kowal <kowal@linux.vnet.ibm.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agopnv/xive2: Enable VST NVG and NVC index compression
Frederic Barrat [Wed, 24 Jul 2024 21:21:25 +0000 (16:21 -0500)]
pnv/xive2: Enable VST NVG and NVC index compression

Enable NVG and NVC VST tables for index compression which indicates the number
of bits the address is shifted to the right for the table accesses.
The compression values are defined as:
   0000 - No compression
   0001 - 1 bit shift
   0010 - 2 bit shift
   ....
   1000 - 8 bit shift
   1001-1111 - No compression

Signed-off-by: Frederic Barrat <fbarrat@linux.ibm.com>
Signed-off-by: Michael Kowal <kowal@linux.vnet.ibm.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agopnv/xive2: Configure Virtualization Structure Tables through the PC
Frederic Barrat [Wed, 24 Jul 2024 21:21:24 +0000 (16:21 -0500)]
pnv/xive2: Configure Virtualization Structure Tables through the PC

Both the virtualization layer (VC) and presentation layer (PC) need to
be configured to access the VSTs. Since the information is redundant,
the xive model combines both into one set of tables and only the
definitions going through the VC are kept. The definitions through the
PC are ignored. That works well as long as firmware calls the VC for
all the tables.

For the NVG and NVC tables, it can make sense to only configure them
with the PC, since they are only used by the presenter. So this patch
allows firmware to configure the VST tables through the PC as well.
The definitions are still shared, since the VST tables can be set
through both the VC and/or PC, they are dynamically re-mapped in
memory by first deleting the memory subregion.

Signed-off-by: Frederic Barrat <fbarrat@linux.ibm.com>
Signed-off-by: Michael Kowal <kowal@linux.vnet.ibm.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agopnv/xive2: Add NVG and NVC to cache watch facility
Frederic Barrat [Wed, 24 Jul 2024 21:21:23 +0000 (16:21 -0500)]
pnv/xive2: Add NVG and NVC to cache watch facility

The cache watch facility uses the same register interface to handle
entries in the NVP, NVG and NVC tables. A bit-field in the 'watchX
specification' register tells the table type. So far, that bit-field
was not read and the code assumed a read/write to the NVP table.

This patch allows to read/write entries in the NVG and NVC table as
well.

Signed-off-by: Frederic Barrat <fbarrat@linux.ibm.com>
Signed-off-by: Michael Kowal <kowal@linux.vnet.ibm.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agopnv/xive: Support cache flush and queue sync inject with notifications
Nicholas Piggin [Wed, 24 Jul 2024 21:21:22 +0000 (16:21 -0500)]
pnv/xive: Support cache flush and queue sync inject with notifications

Adds support for writing a completion notification byte in memory
whenever a cache flush or queue sync inject operation is requested by
software.  QEMU does not cache any of the XIVE data that is in memory and
therefore it simply writes the completion notification byte at the time
that the operation is requested.

Co-authored-by: Glenn Miles <milesg@linux.vnet.ibm.com>
Signed-off-by: Glenn Miles <milesg@linux.vnet.ibm.com>
Signed-off-by: Michael Kowal <kowal@linux.vnet.ibm.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agopnv/xive2: Structure/define alignment changes
Michael Kowal [Wed, 24 Jul 2024 21:21:21 +0000 (16:21 -0500)]
pnv/xive2: Structure/define alignment changes

Made changes to some structure and define elements to ease review in
next patchset.

Signed-off-by: Michael Kowal <kowal@linux.vnet.ibm.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agopnv/xive2: XIVE2 Cache Watch, Cache Flush and Sync Injection support
Frederic Barrat [Wed, 24 Jul 2024 21:21:20 +0000 (16:21 -0500)]
pnv/xive2: XIVE2 Cache Watch, Cache Flush and Sync Injection support

XIVE offers a 'cache watch facility', which allows software to read/update
a potentially cached table entry with no software lock. There's one such
facility in the Virtualization Controller (VC) to update the ESB and END
entries and one in the Presentation Controller (PC) to update the
NVP/NVG/NVC entries.

Each facility has 4 cache watch engines to control the updates and
firmware can request an available engine by querying the hardware
'watch_assign' register of the VC or PC. The engine is then reserved and
is released after the data is updated by reading the 'watch_spec' register
(which also allows to check for a conflict during the update).
If no engine is available, the special value 0xFF is returned and
firmware is expected to repeat the request until an engine becomes
available.

Signed-off-by: Frederic Barrat <fbarrat@linux.ibm.com>
Signed-off-by: Michael Kowal <kowal@linux.vnet.ibm.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agotests/qtest: Add pnv-spi-seeprom qtest
Chalapathi V [Wed, 26 Jun 2024 09:05:28 +0000 (04:05 -0500)]
tests/qtest: Add pnv-spi-seeprom qtest

In this commit Write a qtest pnv-spi-seeprom-test to check the
SPI transactions between spi controller and seeprom device.

Signed-off-by: Chalapathi V <chalapathi.v@linux.ibm.com>
Acked-by: Cédric Le Goater <clg@redhat.com>
Reviewed-by: Caleb Schlossin <calebs@linux.vnet.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agohw/ppc: SPI controller wiring to P10 chip
Chalapathi V [Wed, 26 Jun 2024 09:05:27 +0000 (04:05 -0500)]
hw/ppc: SPI controller wiring to P10 chip

In this commit, create SPI controller on p10 chip and connect cs irq.

The QOM tree of pnv-spi and seeprom are.
/machine (powernv10-machine)
  /chip[0] (power10_v2.0-pnv-chip)
    /pib_spic[2] (pnv-spi)
      /pnv-spi-bus.2 (SSI)
      /xscom-spi[0] (memory-region)

/machine (powernv10-machine)
  /peripheral-anon (container)
    /device[0] (25csm04)
      /WP#[0] (irq)
      /ssi-gpio-cs[0] (irq)

(qemu) qom-get /machine/peripheral-anon /device[76] "parent_bus"
"/machine/chip[0]/pib_spic[2]/pnv-spi-bus.2"

Signed-off-by: Chalapathi V <chalapathi.v@linux.ibm.com>
Reviewed-by: Glenn Miles <milesg@linux.ibm.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agohw/block: Add Microchip's 25CSM04 to m25p80
Chalapathi V [Wed, 26 Jun 2024 09:05:26 +0000 (04:05 -0500)]
hw/block: Add Microchip's 25CSM04 to m25p80

Add Microchip's 25CSM04 Serial EEPROM to m25p80.  25CSM04 provides 4 Mbits
of Serial EEPROM utilizing the Serial Peripheral Interface (SPI) compatible
bus. The device is organized as 524288 bytes of 8 bits each (512Kbyte) and
is optimized for use in consumer and industrial applications where reliable
and dependable nonvolatile memory storage is essential.

Signed-off-by: Chalapathi V <chalapathi.v@linux.ibm.com>
Reviewed-by: Glenn Miles <milesg@linux.ibm.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agohw/ssi: Extend SPI model
Chalapathi V [Wed, 26 Jun 2024 09:05:25 +0000 (04:05 -0500)]
hw/ssi: Extend SPI model

In this commit SPI shift engine and sequencer logic is implemented.
Shift engine performs serialization and de-serialization according to the
control by the sequencer and according to the setup defined in the
configuration registers. Sequencer implements the main control logic and
FSM to handle data transmit and data receive control of the shift engine.

Signed-off-by: Chalapathi V <chalapathi.v@linux.ibm.com>
Reviewed-by: Caleb Schlossin <calebs@linux.vnet.ibm.com>
Reviewed-by: Glenn Miles <milesg@linux.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agohw/ssi: Add SPI model
Chalapathi V [Wed, 26 Jun 2024 09:05:24 +0000 (04:05 -0500)]
hw/ssi: Add SPI model

SPI controller device model supports a connection to a single SPI responder.
This provide access to SPI seeproms, TPM, flash device and an ADC controller.

All SPI function control is mapped into the SPI register space to enable full
control by firmware. In this commit SPI configuration component is modelled
which contains all SPI configuration and status registers as well as the hold
registers for data to be sent or having been received.

An existing QEMU SSI framework is used and SSI_BUS is created.

Signed-off-by: Chalapathi V <chalapathi.v@linux.ibm.com>
Reviewed-by: Caleb Schlossin <calebs@linux.vnet.ibm.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Reviewed-by: Glenn Miles <milesg@linux.ibm.com>
[np: Fix FDT macro compile for qtest]
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agoppc/pnv: Remove ppc target dependency from pnv_xscom.h
Chalapathi V [Wed, 26 Jun 2024 09:05:23 +0000 (04:05 -0500)]
ppc/pnv: Remove ppc target dependency from pnv_xscom.h

In this commit target specific dependency from include/hw/ppc/pnv_xscom.h
has been removed so that pnv_xscom.h can be included outside hw/ppc.

Signed-off-by: Chalapathi V <chalapathi.v@linux.ibm.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Reviewed-by: Caleb Schlossin <calebs@linux.vnet.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agoppc/pnv: Add an LPAR per core machine option
Nicholas Piggin [Fri, 24 May 2024 05:02:46 +0000 (15:02 +1000)]
ppc/pnv: Add an LPAR per core machine option

Recent POWER CPUs can operate in "LPAR per core" or "LPAR per thread"
modes. In per-core mode, some SPRs and IPI doorbells are shared between
threads in a core. In per-thread mode, supervisor and user state is
not shared between threads.

OpenPOWER systems after POWER8 use LPAR per thread mode, and it is
required for KVM. Enterprise systems use LPAR per core mode, as they
partition the machine by core.

Implement a lpar-per-core machine option for powernv machines. This
is fixed true for POWER8 machines, and defaults off for P9 and P10.

With this change, powernv8 SMT now works sufficiently to run Linux,
with a single socket. Multi-threaded KVM guests still have problems,
as does multi-socket Linux boot.

Reviewed-by: Cédric Le Goater <clg@redhat.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agoppc/pnv: Implement POWER10 PC xscom registers for direct controls
Nicholas Piggin [Thu, 16 May 2024 13:44:12 +0000 (23:44 +1000)]
ppc/pnv: Implement POWER10 PC xscom registers for direct controls

The PC unit in the processor core contains xscom registers that provide
low level status and control of the CPU.

This implements "direct controls", sufficient for skiboot firmware,
which uses it to send NMI IPIs between CPUs.

POWER10 is sufficiently different from POWER9 (particularly with respect
to QME and special wakeup) that it is not trivial to implement POWER9
support by reusing the code.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agoppc/pnv: Add a CPU nmi and resume function
Nicholas Piggin [Fri, 12 Jul 2024 03:16:44 +0000 (13:16 +1000)]
ppc/pnv: Add a CPU nmi and resume function

Power CPUs have an execution control facility that can pause, resume,
and cause NMIs, among other things. Add a function that will nmi a CPU
and resume it if it was paused, in preparation for implementing the
control facility.

Reviewed-by: Cédric Le Goater <clg@redhat.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agoppc/pnv: Add big-core machine property
Nicholas Piggin [Tue, 18 Jun 2024 02:45:34 +0000 (12:45 +1000)]
ppc/pnv: Add big-core machine property

Big-core implementation is complete, so expose it as a machine
property that may be set with big-core=on option on powernv9 and
powernv10 machines.

Reviewed-by: Cédric Le Goater <clg@redhat.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agoppc/pnv: Add POWER10 ChipTOD quirk for big-core
Nicholas Piggin [Tue, 18 Jun 2024 03:09:54 +0000 (13:09 +1000)]
ppc/pnv: Add POWER10 ChipTOD quirk for big-core

POWER10 has a quirk in its ChipTOD addressing that requires the even
small-core to be selected even when programming the odd small-core.
This allows skiboot chiptod init to run in big-core mode.

Reviewed-by: Cédric Le Goater <clg@redhat.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agoppc/pnv: Implement Power9 CPU core thread state indirect register
Nicholas Piggin [Thu, 11 Jul 2024 08:31:35 +0000 (18:31 +1000)]
ppc/pnv: Implement Power9 CPU core thread state indirect register

Power9 CPUs have a core thread state register accessible via SPRC/SPRD
indirect registers. This register includes a bit for big-core mode,
which skiboot requires.

Reviewed-by: Cédric Le Goater <clg@redhat.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agoppc/pnv: Implement big-core PVR for Power9/10
Nicholas Piggin [Thu, 11 Jul 2024 08:37:25 +0000 (18:37 +1000)]
ppc/pnv: Implement big-core PVR for Power9/10

Power9/10 CPUs have PVR[51] set in small-core mode and clear in big-core
mode. This is used by skiboot firmware.

PVR is not hypervisor-privileged but it is not so important that spapr
to implement this because it's generally masked out of PVR matching code
in kernels, and only used by firmware.

Reviewed-by: Cédric Le Goater <clg@redhat.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agoppc/pnv: Add allow for big-core differences in DT generation
Nicholas Piggin [Thu, 11 Jul 2024 09:06:14 +0000 (19:06 +1000)]
ppc/pnv: Add allow for big-core differences in DT generation

device-tree building needs to account for big-core mode, because it is
driven by qemu cores (small cores). Every second core should be skipped,
and every core should describe threads for both small-cores that make
up the big core.

Reviewed-by: Cédric Le Goater <clg@redhat.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agoppc/pnv: Add a big-core mode that joins two regular cores
Nicholas Piggin [Thu, 16 May 2024 05:25:12 +0000 (15:25 +1000)]
ppc/pnv: Add a big-core mode that joins two regular cores

POWER9 and POWER10 machines come in two variants, big-core and
small-core. Big-core machines are SMT8 from software's point of view,
but the low level platform topology ("xscom registers and pervasive
addressing"), these look more like a pair of small cores ganged
together.

Presently the way this is modelled is to create one SMT8 PnvCore and add
special cases to xscom and pervasive for big-core mode that tries to
split this into two small cores, but this is becoming too complicated to
manage.

A better approach is to create 2 core structures and ganging them
together to look like an SMT8 core in TCG. Then the xscom and pervasive
models mostly do not need to differentiate big and small core modes.

This change adds initial mode bits and QEMU topology handling to
split SMT8 cores into 2xSMT4 cores.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agoppc: Add has_smt_siblings property to CPUPPCState
Nicholas Piggin [Tue, 18 Jun 2024 02:56:53 +0000 (12:56 +1000)]
ppc: Add has_smt_siblings property to CPUPPCState

The decision to branch out to a slower SMT path in instruction
emulation will become a bit more complicated with the way that
"big-core" topology that will be implemented in subsequent changes.
Hide these details from the wider CPU emulation code with a bool
has_smt_siblings flag that can be set by machine initialisation.

Reviewed-by: Cédric Le Goater <clg@redhat.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agotarget/ppc: Add helpers to check for SMT sibling threads
Nicholas Piggin [Fri, 24 May 2024 07:49:52 +0000 (17:49 +1000)]
target/ppc: Add helpers to check for SMT sibling threads

Add helpers for TCG code to determine if there are SMT siblings
sharing per-core and per-lpar registers. This simplifies the
callers and makes SMT register topology simpler to modify with
later changes.

Reviewed-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agoppc: Add a core_index to CPUPPCState for SMT vCPUs
Nicholas Piggin [Thu, 16 May 2024 05:25:12 +0000 (15:25 +1000)]
ppc: Add a core_index to CPUPPCState for SMT vCPUs

The way SMT thread siblings are matched is clunky, using hard-coded
logic that checks the PIR SPR.

Change that to use a new core_index variable in the CPUPPCState,
where all siblings have the same core_index. CPU realize routines have
flexibility in setting core/sibling topology.

Reviewed-by: Cédric Le Goater <clg@redhat.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agoppc/pnv: Extend chip_pir class method to TIR as well
Nicholas Piggin [Fri, 24 May 2024 01:54:09 +0000 (11:54 +1000)]
ppc/pnv: Extend chip_pir class method to TIR as well

The chip_pir chip class method allows the platform to set the PIR
processor identification register. Extend this to a more general
ID function which also allows the TIR to be set. This is in
preparation for "big core", which is a more complicated topology
of cores and threads.

Reviewed-by: Cédric Le Goater <clg@redhat.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agoppc/pnv: use class attribute to limit SMT threads for different machines
Nicholas Piggin [Fri, 24 May 2024 05:52:04 +0000 (15:52 +1000)]
ppc/pnv: use class attribute to limit SMT threads for different machines

Use a class attribute to specify the number of SMT threads per core
permitted for different machines, 8 for powernv8 and 4 for powernv9/10.

Reviewed-by: Cédric Le Goater <clg@redhat.com>
Reviewed-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agotarget/ppc: Move SPR indirect registers into PnvCore
Nicholas Piggin [Sun, 26 May 2024 11:24:00 +0000 (21:24 +1000)]
target/ppc: Move SPR indirect registers into PnvCore

SPRC/SPRD were recently added to all BookS CPUs supported, but
they are only tested on POWER9 and POWER10, so restrict them to
those CPUs.

SPR indirect scratch registers presently replicated per-CPU like
SMT SPRs, but the PnvCore is a better place for them since they
are restricted to P9/P10.

Also add SPR indirect read access to core thread state for POWER9
since skiboot accesses that when booting to check for big-core
mode.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agoppc/pnv: Move timebase state into PnvCore
Nicholas Piggin [Fri, 24 May 2024 11:58:18 +0000 (21:58 +1000)]
ppc/pnv: Move timebase state into PnvCore

The timebase state machine is per per-core state and can be driven
by any thread in the core. It is currently implemented as a hack
where the state is in a CPU structure and only thread 0's state is
accessed by the chiptod, which limits programming the timebase
side of the state machine to thread 0 of a core.

Move the state out into PnvCore and share it among all threads.

Reviewed-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agoppc/pnv: Add pointer from PnvCPUState to PnvCore
Nicholas Piggin [Sun, 26 May 2024 05:04:05 +0000 (15:04 +1000)]
ppc/pnv: Add pointer from PnvCPUState to PnvCore

This helps move core state from CPU to core structures.

Reviewed-by: Cédric Le Goater <clg@redhat.com>
Reviewed-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agotarget/ppc: Fix msgsnd for POWER8
Nicholas Piggin [Sat, 6 Jul 2024 03:22:58 +0000 (13:22 +1000)]
target/ppc: Fix msgsnd for POWER8

POWER8 (ISA v2.07S) introduced the doorbell facility, the msgsnd
instruction behaved mostly like msgsndp, it was addressed by TIR
and could only send interrupts between threads on the core.

ISA v3.0 changed msgsnd to be addressed by PIR and can interrupt
any thread in the system.

msgsnd only implements the v3.0 semantics, which can make
multi-threaded POWER8 hang when booting Linux (due to IPIs
failing). This change adds v2.07 semantics.

Reviewed-by: Cédric Le Goater <clg@redhat.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agoppc/pnv: Implement ADU access to LPC space
Nicholas Piggin [Wed, 17 Apr 2024 04:50:13 +0000 (14:50 +1000)]
ppc/pnv: Implement ADU access to LPC space

One of the functions of the ADU is indirect memory access engines that
send and receive data via ADU registers.

This implements the ADU LPC memory access functionality sufficiently
for IBM proprietary firmware to access the UART and print characters
to the serial port as it does on real hardware.

This requires a linkage between adu and lpc, which allows adu to
perform memory access in the lpc space.

Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agoppc/pnv: Begin a more complete ADU LPC model for POWER9/10
Nicholas Piggin [Fri, 23 Feb 2024 12:34:56 +0000 (22:34 +1000)]
ppc/pnv: Begin a more complete ADU LPC model for POWER9/10

This implements a framework for an ADU unit model.

The ADU unit actually implements XSCOM, which is the bridge between MMIO
and PIB. However it also includes control and status registers and other
functions that are exposed as PIB (xscom) registers.

To keep things simple, pnv_xscom.c remains the XSCOM bridge
implementation, and pnv_adu.c implements the ADU registers and other
functions.

So far, just the ADU no-op registers in the pnv_xscom.c default handler
are moved over to the adu model.

Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agoppc/pnv: Implement POWER9 LPC PSI serirq outputs and auto-clear function
Nicholas Piggin [Fri, 10 May 2024 07:10:40 +0000 (17:10 +1000)]
ppc/pnv: Implement POWER9 LPC PSI serirq outputs and auto-clear function

The POWER8 LPC ISA device irqs all get combined and reported to the line
connected the PSI LPCHC irq. POWER9 changed this so only internal LPC
host controller irqs use that line, and the device irqs get routed to
4 new lines connected to PSI SERIRQ0-3.

POWER9 also introduced a new feature that automatically clears the irq
status in the LPC host controller when EOI'ed, so software does not have
to.

The powernv OPAL (skiboot) firmware managed to work because the LPCHC
irq handler scanned all LPC irqs and handled those including clearing
status even on POWER9 systems. So LPC irqs worked despite OPAL thinking
it was running in POWER9 mode. After this change, UART interrupts show
up on serirq1 which is where OPAL routes them to:

 cat /proc/interrupts
 ...
 20:          0  XIVE-IRQ 1048563 Level     opal-psi#0:lpchc
 ...
 25:         34  XIVE-IRQ 1048568 Level     opal-psi#0:lpc_serirq_mux1

Whereas they previously turn up on lpchc.

Reviewed-by: Glenn Miles <milesg@linux.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agoppc/pnv: Fix loss of LPC SERIRQ interrupts
Glenn Miles [Fri, 24 May 2024 18:24:14 +0000 (13:24 -0500)]
ppc/pnv: Fix loss of LPC SERIRQ interrupts

The LPC HC irq status register bits are set when an LPC IRQSER input is
asserted. These irq status bits drive the PSI irq to the CPU interrupt
controller. The LPC HC irq status bits are cleared by software writing
to the register with 1's for the bits to clear.

Existing register write was clearing the irq status bits even when the
input was asserted, this results in interrupts being lost.

This fix changes the behavior to keep track of the device IRQ status
in internal state that is separate from the irq status register, and
only allowing the irq status bits to be cleared if the associated
input is not asserted.

Signed-off-by: Glenn Miles <milesg@linux.ibm.com>
[np: rebased before P9 PSI SERIRQ patch, adjust changelog/comments]
Reviewed-by: Glenn Miles <milesg@linux.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agoppc/pnv: Update Power10's cfam id to use Power10 DD2
Aditya Gupta [Thu, 2 May 2024 06:27:01 +0000 (11:57 +0530)]
ppc/pnv: Update Power10's cfam id to use Power10 DD2

Power10 DD1.0 was dropped in:

    commit 8f054d9ee825 ("ppc: Drop support for POWER9 and POWER10 DD1 chips")

Use the newer Power10 DD2 chips cfam id.

Signed-off-by: Aditya Gupta <adityag@linux.ibm.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agotarget/ppc/cpu_init: Synchronize HASHPKEYR with KVM for migration
Shivaprasad G Bhat [Wed, 5 Jun 2024 15:58:22 +0000 (15:58 +0000)]
target/ppc/cpu_init: Synchronize HASHPKEYR with KVM for migration

The patch enables HASHPKEYR migration by hooking with the
"KVM one reg" ID KVM_REG_PPC_HASHPKEYR.

Signed-off-by: Shivaprasad G Bhat <sbhat@linux.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agotarget/ppc/cpu_init: Synchronize HASHKEYR with KVM for migration
Shivaprasad G Bhat [Wed, 5 Jun 2024 15:58:12 +0000 (15:58 +0000)]
target/ppc/cpu_init: Synchronize HASHKEYR with KVM for migration

The patch enables HASHKEYR migration by hooking with the
"KVM one reg" ID KVM_REG_PPC_HASHKEYR.

Signed-off-by: Shivaprasad G Bhat <sbhat@linux.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agotarget/ppc/cpu_init: Synchronize DEXCR with KVM for migration
Shivaprasad G Bhat [Wed, 5 Jun 2024 15:58:02 +0000 (15:58 +0000)]
target/ppc/cpu_init: Synchronize DEXCR with KVM for migration

The patch enables DEXCR migration by hooking with the
"KVM one reg" ID KVM_REG_PPC_DEXCR.

Signed-off-by: Shivaprasad G Bhat <sbhat@linux.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agolinux-header: PPC: KVM: Update one-reg ids for DEXCR, HASHKEYR and HASHPKEYR
Shivaprasad G Bhat [Wed, 5 Jun 2024 15:57:52 +0000 (15:57 +0000)]
linux-header: PPC: KVM: Update one-reg ids for DEXCR, HASHKEYR and HASHPKEYR

This is a placeholder change for these SPRs until the full linux
header update.

Signed-off-by: Shivaprasad G Bhat <sbhat@linux.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agotarget/ppc/arch_dump: set prstatus pid to cpuid
Omar Sandoval [Fri, 19 Jul 2024 18:39:05 +0000 (11:39 -0700)]
target/ppc/arch_dump: set prstatus pid to cpuid

Every other architecture does this, and debuggers need it to be able to
identify which prstatus note corresponds to which CPU.

Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Signed-off-by: Omar Sandoval <osandov@osandov.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agotarget/ppc: handle vcpu hotplug failure gracefully
Harsh Prateek Bora [Tue, 18 Jun 2024 08:23:54 +0000 (13:53 +0530)]
target/ppc: handle vcpu hotplug failure gracefully

On ppc64, the PowerVM hypervisor runs with limited memory and a VCPU
creation during hotplug may fail during kvm_ioctl for KVM_CREATE_VCPU,
leading to termination of guest since errp is set to &error_fatal while
calling kvm_init_vcpu. This unexpected behaviour can be avoided by
pre-creating and parking vcpu on success or return error otherwise.
This enables graceful error delivery for any vcpu hotplug failures while
the guest can keep running.

Also introducing KVM AccelCPUClass to init cpu_target_realize for kvm.

Tested OK by repeatedly doing a hotplug/unplug of vcpus as below:

 #virsh setvcpus hotplug 40
 #virsh setvcpus hotplug 70
error: internal error: unable to execute QEMU command 'device_add':
kvmppc_cpu_realize: vcpu hotplug failed with -12

Signed-off by: Harsh Prateek Bora <harshpb@linux.ibm.com>

Reported-by: Anushree Mathur <anushree.mathur@linux.vnet.ibm.com>
Suggested-by: Shivaprasad G Bhat <sbhat@linux.ibm.com>
Suggested-by: Vaibhav Jain <vaibhav@linux.ibm.com>
Tested-by: Anushree Mathur <anushree.mathur@linux.vnet.ibm.com>
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agocpu-common.c: export cpu_get_free_index to be reused later
Harsh Prateek Bora [Tue, 18 Jun 2024 08:23:53 +0000 (13:53 +0530)]
cpu-common.c: export cpu_get_free_index to be reused later

This helper provides an easy way to identify the next available free cpu
index which can be used for vcpu creation. Until now, this is being
called at a very later stage and there is a need to be able to call it
earlier (for now, with ppc64) hence the need to export.

Suggested-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agoaccel/kvm: Introduce kvm_create_and_park_vcpu() helper
Harsh Prateek Bora [Tue, 18 Jun 2024 08:23:52 +0000 (13:53 +0530)]
accel/kvm: Introduce kvm_create_and_park_vcpu() helper

There are distinct helpers for creating and parking a KVM vCPU.
However, there can be cases where a platform needs to create and
immediately park the vCPU during early stages of vcpu init which
can later be reused when vcpu thread gets initialized. This would
help detect failures with kvm_create_vcpu at an early stage.

Suggested-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agoppc/vof: Fix unaligned FDT property access
Akihiko Odaki [Mon, 8 Jul 2024 06:55:13 +0000 (15:55 +0900)]
ppc/vof: Fix unaligned FDT property access

FDT properties are aligned by 4 bytes, not 8 bytes.

Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agospapr: Free stdout path
Akihiko Odaki [Mon, 8 Jul 2024 06:55:12 +0000 (15:55 +0900)]
spapr: Free stdout path

This fixes LeakSanitizer warnings.

Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agospapr: Migrate ail-mode-3 spapr cap
Nicholas Piggin [Mon, 6 May 2024 11:56:05 +0000 (21:56 +1000)]
spapr: Migrate ail-mode-3 spapr cap

This cap did not add the migration code when it was introduced. This
results in migration failure when changing the default using the
command line.

Cc: qemu-stable@nongnu.org
Fixes: ccc5a4c5e10 ("spapr: Add SPAPR_CAP_AIL_MODE_3 for AIL mode 3 support for H_SET_MODE hcall")
Reviewed-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agotests/tcg: Skip failing ppc64 multi-threaded tests
Nicholas Piggin [Thu, 25 Jul 2024 14:50:31 +0000 (00:50 +1000)]
tests/tcg: Skip failing ppc64 multi-threaded tests

In Gitlab CI, some ppc64 multi-threaded tcg tests crash when run in the
clang-user job with an assertion failure in glibc that seems to
indicate corruption:

  signals: allocatestack.c:223: allocate_stack:
    Assertion `powerof2 (pagesize_m1 + 1)' failed.

Disable these tests for now.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
8 months agoMerge tag 'bsd-user-for-9.1-pull-request' of gitlab.com:bsdimp/qemu into staging
Richard Henderson [Wed, 24 Jul 2024 23:53:57 +0000 (09:53 +1000)]
Merge tag 'bsd-user-for-9.1-pull-request' of gitlab.com:bsdimp/qemu into staging

bsd-user: Misc changes for 9.1 (I hope)

V2: Add missing bsd-user/aarch64/target.h

This patch series includes two main sets of patches. To make it simple to
review, I've included the changes from my student which the later changes depend
on. I've included a change from Jessica and Doug as well. I've reviewed them,
but more eyes never hurt.

I've also included a number of 'touch up' patches needed either to get the
aarch64 building, or to implmement suggestions from prior review cycles. The
main one is what's charitably described as a kludge: force aarch64 to use 4k
pages. The qemu-project (and blitz branch) hasn't had the necessary changes to
bsd-user needed to support variable page size.

Sorry this is so late... Live has conspired to delay me.

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# gpg: Signature made Thu 25 Jul 2024 08:03:40 AM AEST
# gpg:                using RSA key 2035F894B00AA3CF7CCDE1B76C1CD1287DB01100
# gpg: Good signature from "Warner Losh <wlosh@netflix.com>" [unknown]
# gpg:                 aka "Warner Losh <imp@bsdimp.com>" [unknown]
# gpg:                 aka "Warner Losh <imp@freebsd.org>" [unknown]
# gpg:                 aka "Warner Losh <imp@village.org>" [unknown]
# gpg:                 aka "Warner Losh <wlosh@bsdimp.com>" [unknown]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 2035 F894 B00A A3CF 7CCD  E1B7 6C1C D128 7DB0 1100

* tag 'bsd-user-for-9.1-pull-request' of gitlab.com:bsdimp/qemu:
  bsd-user: Add target.h for aarch64.
  bsd-user: Add aarch64 build to tree
  bsd-user: Make compile for non-linux user-mode stuff
  bsd-user: Define TARGET_SIGSTACK_ALIGN and use it to round stack
  bsd-user: Sync fork_start/fork_end with linux-user
  bsd-user: Hard wire aarch64 to be 4k pages only
  bsd-user: Simplify the implementation of execve
  bsd-user:Add AArch64 improvements and signal handling functions
  bsd-user:Add set_mcontext function for ARM AArch64
  bsd-user:Add setup_sigframe_arch function for ARM AArch64
  bsd-user:Add get_mcontext function for ARM AArch64
  bsd-user:Add ARM AArch64 signal handling support
  bsd-user:Add ARM AArch64 support and capabilities
  bsd-user:Add AArch64 register handling and related functions
  bsd-user:Add CPU initialization and management functions

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
8 months agobsd-user: Add target.h for aarch64.
Warner Losh [Wed, 24 Jul 2024 21:57:44 +0000 (15:57 -0600)]
bsd-user: Add target.h for aarch64.

For aarch64, it's a 64-bit API, so there's no pairing of registers for
64-bit values.

Signed-off-by: Warner Losh <imp@bsdimp.com>
8 months agoMerge tag 'misc-fixes-pull-request' of https://gitlab.com/berrange/qemu into staging
Richard Henderson [Wed, 24 Jul 2024 11:35:10 +0000 (21:35 +1000)]
Merge tag 'misc-fixes-pull-request' of https://gitlab.com/berrange/qemu into staging

Crypto patches

* Drop unused 'detached-header' QAPI field from LUKS create options
* Improve tracing of TLS sockets and TLS chardevs
* Improve error messages from TLS I/O failures
* Add docs about use of LUKS detached header options
* Allow building without libtasn1, but with GNUTLS
* Fix detection of libgcrypt when libgcrypt-config is absent

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# -----END PGP SIGNATURE-----
# gpg: Signature made Wed 24 Jul 2024 07:46:29 PM AEST
# gpg:                using RSA key DAF3A6FDB26B62912D0E8E3FBE86EBB415104FDF
# gpg: Good signature from "Daniel P. Berrange <dan@berrange.com>" [full]
# gpg:                 aka "Daniel P. Berrange <berrange@redhat.com>" [full]

* tag 'misc-fixes-pull-request' of https://gitlab.com/berrange/qemu:
  crypto: propagate errors from TLS session I/O callbacks
  crypto: push error reporting into TLS session I/O APIs
  crypto: drop gnutls debug logging support
  chardev: add tracing of socket error conditions
  meson: build chardev trace files when have_block
  qapi: drop unused QCryptoBlockCreateOptionsLUKS.detached-header
  meson.build: fix libgcrypt detection on system without libgcrypt-config
  docs/devel: Add introduction to LUKS volume with detached header
  crypto: Allow building with GnuTLS but without Libtasn1
  crypto: Restrict pkix_asn1_tab[] to crypto-tls-x509-helpers.c
  crypto: Remove 'crypto-tls-x509-helpers.h' from crypto-tls-psk-helpers.c

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
8 months agocrypto: propagate errors from TLS session I/O callbacks
Daniel P. Berrangé [Fri, 15 Mar 2024 14:29:11 +0000 (14:29 +0000)]
crypto: propagate errors from TLS session I/O callbacks

GNUTLS doesn't know how to perform I/O on anything other than plain
FDs, so the TLS session provides it with some I/O callbacks. The
GNUTLS API design requires these callbacks to return a unix errno
value, which means we're currently loosing the useful QEMU "Error"
object.

This changes the I/O callbacks in QEMU to stash the "Error" object
in the QCryptoTLSSession class, and fetch it when seeing an I/O
error returned from GNUTLS, thus preserving useful error messages.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
8 months agocrypto: push error reporting into TLS session I/O APIs
Daniel P. Berrangé [Fri, 15 Mar 2024 14:07:58 +0000 (14:07 +0000)]
crypto: push error reporting into TLS session I/O APIs

The current TLS session I/O APIs just return a synthetic errno
value on error, which has been translated from a gnutls error
value. This looses a large amount of valuable information that
distinguishes different scenarios.

Pushing population of the "Error *errp" object into the TLS
session I/O APIs gives more detailed error information.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
8 months agocrypto: drop gnutls debug logging support
Daniel P. Berrangé [Fri, 15 Mar 2024 13:54:52 +0000 (13:54 +0000)]
crypto: drop gnutls debug logging support

GNUTLS already supports dynamically enabling its logging at runtime by
setting the env var 'GNUTLS_DEBUG_LEVEL=10', so there is no need to
re-invent this logic in QEMU in a way that requires a re-compile.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
8 months agochardev: add tracing of socket error conditions
Daniel P. Berrangé [Fri, 15 Mar 2024 13:04:44 +0000 (13:04 +0000)]
chardev: add tracing of socket error conditions

This adds trace points to every error scenario in the chardev socket
backend that can lead to termination of the connection.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
8 months agomeson: build chardev trace files when have_block
Daniel P. Berrangé [Tue, 23 Jul 2024 10:31:24 +0000 (11:31 +0100)]
meson: build chardev trace files when have_block

The QSD depends on chardev code, and is built when have_tools is
true. This means conditionalizing chardev trace on have_system
is wrong, we need have_block which is set have_system || have_tools.

This latent bug was historically harmless because only the spice
chardev included tracing, which wasn't built in a !have_system
scenario.

Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
8 months agoqapi: drop unused QCryptoBlockCreateOptionsLUKS.detached-header
Daniel P. Berrangé [Mon, 19 Feb 2024 15:12:59 +0000 (15:12 +0000)]
qapi: drop unused QCryptoBlockCreateOptionsLUKS.detached-header

The 'detached-header' field in QCryptoBlockCreateOptionsLUKS
was left over from earlier patch iterations.

Acked-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
8 months agomeson.build: fix libgcrypt detection on system without libgcrypt-config
Yao Zi [Sat, 6 Jul 2024 20:12:26 +0000 (20:12 +0000)]
meson.build: fix libgcrypt detection on system without libgcrypt-config

libgcrypt starts providing correct pkg-config configuration since 1.9,
in parallel with libgcrypt-config. Since 1.11 it may also stop
installing libgcrypt-config in some scenarios. Use the auto method for
detection of libgcrypt, in which meson will try both pkg-config and
libgcrypt-config.

Auto method for libgcrypt is supported by meson since 0.49.0, which is
higher than the version qemu requires.

Signed-off-by: Yao Zi <ziyao@disroot.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
8 months agodocs/devel: Add introduction to LUKS volume with detached header
Hyman Huang [Mon, 19 Feb 2024 16:04:42 +0000 (00:04 +0800)]
docs/devel: Add introduction to LUKS volume with detached header

Signed-off-by: Hyman Huang <yong.huang@smartx.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
8 months agocrypto: Allow building with GnuTLS but without Libtasn1
Philippe Mathieu-Daudé [Thu, 2 May 2024 09:56:42 +0000 (11:56 +0200)]
crypto: Allow building with GnuTLS but without Libtasn1

We only use Libtasn1 in unit tests. As noted in commit d47b83b118
("tests: add migration tests of TLS with x509 credentials"), having
GnuTLS without Libtasn1 is a valid configuration, so do not require
Libtasn1, to avoid:

  Dependency gnutls found: YES 3.7.1 (cached)
  Run-time dependency libtasn1 found: NO (tried pkgconfig)

  ../meson.build:1914:10: ERROR: Dependency "libtasn1" not found, tried pkgconfig

Fixes: ba7ed407e6 ("configure, meson: convert libtasn1 detection to meson")
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
8 months agocrypto: Restrict pkix_asn1_tab[] to crypto-tls-x509-helpers.c
Philippe Mathieu-Daudé [Thu, 2 May 2024 09:56:41 +0000 (11:56 +0200)]
crypto: Restrict pkix_asn1_tab[] to crypto-tls-x509-helpers.c

pkix_asn1_tab[] is only accessed by crypto-tls-x509-helpers.c,
rename pkix_asn1_tab.c as pkix_asn1_tab.c.inc and include it once.

Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
[berrange: updated MAINTAINERS for changed filename]
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
8 months agocrypto: Remove 'crypto-tls-x509-helpers.h' from crypto-tls-psk-helpers.c
Philippe Mathieu-Daudé [Thu, 2 May 2024 09:56:40 +0000 (11:56 +0200)]
crypto: Remove 'crypto-tls-x509-helpers.h' from crypto-tls-psk-helpers.c

crypto-tls-psk-helpers.c doesn't access the declarations
of "crypto-tls-x509-helpers.h", remove the include line
to avoid when building with GNUTLS but without Libtasn1:

  In file included from tests/unit/crypto-tls-psk-helpers.c:23:
  tests/unit/crypto-tls-x509-helpers.h:26:10: fatal error:
  libtasn1.h: No such file or directory
     26 | #include <libtasn1.h>
        |          ^~~~~~~~~~~~
  compilation terminated.

Fixes: e1a6dc91dd ("crypto: Implement TLS Pre-Shared Keys (PSK).")
Suggested-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
8 months agoMerge tag 'pull-loongarch-20240724' of https://gitlab.com/gaosong/qemu into staging
Richard Henderson [Wed, 24 Jul 2024 09:10:58 +0000 (19:10 +1000)]
Merge tag 'pull-loongarch-20240724' of https://gitlab.com/gaosong/qemu into staging

Fix for 9.1

# -----BEGIN PGP SIGNATURE-----
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# gpg: Signature made Wed 24 Jul 2024 06:53:37 PM AEST
# gpg:                using RSA key B8FF1DA0D2FDCB2DA09C6C2C40A2FFF239263EDF
# gpg: Good signature from "Song Gao <m17746591750@163.com>" [unknown]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: B8FF 1DA0 D2FD CB2D A09C  6C2C 40A2 FFF2 3926 3EDF

* tag 'pull-loongarch-20240724' of https://gitlab.com/gaosong/qemu:
  target/loongarch: Fix helper_lddir() a CID INTEGER_OVERFLOW issue

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
8 months agotarget/loongarch: Fix helper_lddir() a CID INTEGER_OVERFLOW issue
Song Gao [Wed, 24 Jul 2024 01:58:53 +0000 (09:58 +0800)]
target/loongarch: Fix helper_lddir() a CID INTEGER_OVERFLOW issue

When the lddir level is 4 and the base is a HugePage, we may try to put value 4
into a field in the TLBENTRY that is only 2 bits wide.

Fixes: Coverity CID 1547717
Fixes: 9c70db9a43388 ("target/loongarch: Fix tlb huge page loading issue")
Signed-off-by: Song Gao <gaosong@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240724015853.1317396-1-gaosong@loongson.cn>

8 months agoMerge tag 'hw-misc-20240723' of https://github.com/philmd/qemu into staging
Richard Henderson [Wed, 24 Jul 2024 05:39:43 +0000 (15:39 +1000)]
Merge tag 'hw-misc-20240723' of https://github.com/philmd/qemu into staging

Misc HW patch queue

- Restrict probe_access*() functions to TCG (Phil)
- Extract do_invalidate_device_tlb from vtd_process_device_iotlb_desc (Clément)
- Fixes in Loongson IPI model (Bibo & Phil)
- Make docs/interop/firmware.json compatible with qapi-gen.py script (Thomas)
- Correct MPC I2C MMIO region size (Zoltan)
- Remove useless cast in Loongson3 Virt machine (Yao)
- Various uses of range overlap API (Yao)
- Use ERRP_GUARD macro in nubus_virtio_mmio_realize (Zhao)
- Use DMA memory API in Goldfish UART model (Phil)
- Expose fifo8_pop_buf and introduce fifo8_drop (Phil)
- MAINTAINERS updates (Zhao, Phil)

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# gpg:                using RSA key FAABE75E12917221DCFD6BB2E3E32C2CDEADC0DE
# gpg: Good signature from "Philippe Mathieu-Daudé (F4BUG) <f4bug@amsat.org>" [full]

* tag 'hw-misc-20240723' of https://github.com/philmd/qemu: (28 commits)
  MAINTAINERS: Add myself as a reviewer of machine core
  MAINTAINERS: Cover guest-agent in QAPI schema
  util/fifo8: Introduce fifo8_drop()
  util/fifo8: Expose fifo8_pop_buf()
  util/fifo8: Rename fifo8_pop_buf() -> fifo8_pop_bufptr()
  util/fifo8: Rename fifo8_peek_buf() -> fifo8_peek_bufptr()
  util/fifo8: Use fifo8_reset() in fifo8_create()
  util/fifo8: Fix style
  chardev/char-fe: Document returned value on error
  hw/char/goldfish: Use DMA memory API
  hw/nubus/virtio-mmio: Fix missing ERRP_GUARD() in realize handler
  dump: make range overlap check more readable
  crypto/block-luks: make range overlap check more readable
  system/memory_mapping: make range overlap check more readable
  sparc/ldst_helper: make range overlap check more readable
  cxl/mailbox: make range overlap check more readable
  util/range: Make ranges_overlap() return bool
  hw/mips/loongson3_virt: remove useless type cast
  hw/i2c/mpc_i2c: Fix mmio region size
  docs/interop/firmware.json: convert "Example" section
  ...

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
9 months agoMerge tag 'pull-vfio-20240723-1' of https://github.com/legoater/qemu into staging
Richard Henderson [Wed, 24 Jul 2024 02:58:46 +0000 (12:58 +1000)]
Merge tag 'pull-vfio-20240723-1' of https://github.com/legoater/qemu into staging

vfio queue:

* IOMMUFD Dirty Tracking support
* Fix for a possible SEGV in IOMMU type1 container
* Dropped initialization of host IOMMU device with mdev devices

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# gpg:                using RSA key A0F66548F04895EBFE6B0B6051A343C7CFFBECA1
# gpg: Good signature from "Cédric Le Goater <clg@kaod.org>" [undefined]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: A0F6 6548 F048 95EB FE6B  0B60 51A3 43C7 CFFB ECA1

* tag 'pull-vfio-20240723-1' of https://github.com/legoater/qemu:
  vfio/common: Allow disabling device dirty page tracking
  vfio/migration: Don't block migration device dirty tracking is unsupported
  vfio/iommufd: Implement VFIOIOMMUClass::query_dirty_bitmap support
  vfio/iommufd: Implement VFIOIOMMUClass::set_dirty_tracking support
  vfio/iommufd: Probe and request hwpt dirty tracking capability
  vfio/{iommufd, container}: Invoke HostIOMMUDevice::realize() during attach_device()
  vfio/iommufd: Add hw_caps field to HostIOMMUDeviceCaps
  vfio/{iommufd,container}: Remove caps::aw_bits
  vfio/iommufd: Introduce auto domain creation
  vfio/ccw: Don't initialize HOST_IOMMU_DEVICE with mdev
  vfio/ap: Don't initialize HOST_IOMMU_DEVICE with mdev
  vfio/iommufd: Return errno in iommufd_cdev_attach_ioas_hwpt()
  backends/iommufd: Extend iommufd_backend_get_device_info() to fetch HW capabilities
  vfio/iommufd: Don't initialize nor set a HOST_IOMMU_DEVICE with mdev
  vfio/pci: Extract mdev check into an helper
  hw/vfio/container: Fix SIGSEV on vfio_container_instance_finalize()

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
9 months agoMerge tag 'for-upstream' of https://gitlab.com/bonzini/qemu into staging
Richard Henderson [Wed, 24 Jul 2024 01:25:40 +0000 (11:25 +1000)]
Merge tag 'for-upstream' of https://gitlab.com/bonzini/qemu into staging

* target/i386/kvm: support for reading RAPL MSRs using a helper program
* hpet: emulation improvements

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# gpg:                issuer "pbonzini@redhat.com"
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" [full]
# gpg:                 aka "Paolo Bonzini <pbonzini@redhat.com>" [full]

* tag 'for-upstream' of https://gitlab.com/bonzini/qemu:
  hpet: avoid timer storms on periodic timers
  hpet: store full 64-bit target value of the counter
  hpet: accept 64-bit reads and writes
  hpet: place read-only bits directly in "new_val"
  hpet: remove unnecessary variable "index"
  hpet: ignore high bits of comparator in 32-bit mode
  hpet: fix and cleanup persistence of interrupt status
  Add support for RAPL MSRs in KVM/Qemu
  tools: build qemu-vmsr-helper
  qio: add support for SO_PEERCRED for socket channel
  target/i386: do not crash if microvm guest uses SGX CPUID leaves

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
9 months agoMerge tag 'for_upstream' of https://git.kernel.org/pub/scm/virt/kvm/mst/qemu into...
Richard Henderson [Tue, 23 Jul 2024 23:32:04 +0000 (09:32 +1000)]
Merge tag 'for_upstream' of https://git./virt/kvm/mst/qemu into staging

virtio,pci,pc: features,fixes

pci: Initial support for SPDM Responders
cxl: Add support for scan media, feature commands, device patrol scrub
    control, DDR5 ECS control, firmware updates
virtio: in-order support
virtio-net: support for SR-IOV emulation (note: known issues on s390,
                                          might get reverted if not fixed)
smbios: memory device size is now configurable per Machine
cpu: architecture agnostic code to support vCPU Hotplug

Fixes, cleanups all over the place.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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# gpg:                issuer "mst@redhat.com"
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>" [undefined]
# gpg:                 aka "Michael S. Tsirkin <mst@redhat.com>" [undefined]
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* tag 'for_upstream' of https://git.kernel.org/pub/scm/virt/kvm/mst/qemu: (61 commits)
  hw/nvme: Add SPDM over DOE support
  backends: Initial support for SPDM socket support
  hw/pci: Add all Data Object Types defined in PCIe r6.0
  tests/acpi: Add expected ACPI AML files for RISC-V
  tests/qtest/bios-tables-test.c: Enable basic testing for RISC-V
  tests/acpi: Add empty ACPI data files for RISC-V
  tests/qtest/bios-tables-test.c: Remove the fall back path
  tests/acpi: update expected DSDT blob for aarch64 and microvm
  acpi/gpex: Create PCI link devices outside PCI root bridge
  tests/acpi: Allow DSDT acpi table changes for aarch64
  hw/riscv/virt-acpi-build.c: Update the HID of RISC-V UART
  hw/riscv/virt-acpi-build.c: Add namespace devices for PLIC and APLIC
  virtio-iommu: Add trace point on virtio_iommu_detach_endpoint_from_domain
  hw/vfio/common: Add vfio_listener_region_del_iommu trace event
  virtio-iommu: Remove the end point on detach
  virtio-iommu: Free [host_]resv_ranges on unset_iommu_devices
  virtio-iommu: Remove probe_done
  Revert "virtio-iommu: Clear IOMMUDevice when VFIO device is unplugged"
  gdbstub: Add helper function to unregister GDB register space
  physmem: Add helper function to destroy CPU AddressSpace
  ...

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
9 months agoMAINTAINERS: Add myself as a reviewer of machine core
Zhao Liu [Mon, 22 Jul 2024 16:44:12 +0000 (00:44 +0800)]
MAINTAINERS: Add myself as a reviewer of machine core

While working on a series of CPU/cache topology work, I became
interested in the machine core component and would like to help to
review more related patches.

Signed-off-by: Zhao Liu <zhao1.liu@intel.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20240722164412.1163414-1-zhao1.liu@intel.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
9 months agoMAINTAINERS: Cover guest-agent in QAPI schema
Philippe Mathieu-Daudé [Wed, 17 Jul 2024 13:58:28 +0000 (15:58 +0200)]
MAINTAINERS: Cover guest-agent in QAPI schema

Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Konstantin Kostiuk <kkostiuk@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20240717140025.66397-1-philmd@linaro.org>

9 months agoutil/fifo8: Introduce fifo8_drop()
Philippe Mathieu-Daudé [Mon, 22 Jul 2024 11:37:48 +0000 (13:37 +0200)]
util/fifo8: Introduce fifo8_drop()

Add the fifo8_drop() helper for clarity.
It is a simple wrapper over fifo8_pop_buf().

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Message-Id: <20240722160745.67904-8-philmd@linaro.org>

9 months agoutil/fifo8: Expose fifo8_pop_buf()
Philippe Mathieu-Daudé [Mon, 22 Jul 2024 11:27:53 +0000 (13:27 +0200)]
util/fifo8: Expose fifo8_pop_buf()

Extract fifo8_pop_buf() from hw/scsi/esp.c and expose
it as part of the <qemu/fifo8.h> API. This function takes
care of non-contiguous (wrapped) FIFO buffer (which is an
implementation detail).

Suggested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Message-Id: <20240722160745.67904-7-philmd@linaro.org>

9 months agoutil/fifo8: Rename fifo8_pop_buf() -> fifo8_pop_bufptr()
Philippe Mathieu-Daudé [Mon, 22 Jul 2024 11:25:01 +0000 (13:25 +0200)]
util/fifo8: Rename fifo8_pop_buf() -> fifo8_pop_bufptr()

Since fifo8_pop_buf() return a const buffer (which points
directly into the FIFO backing store). Rename it using the
'bufptr' suffix to better reflect that it is a pointer to
the internal buffer that is being returned. This will help
differentiate with methods *copying* the FIFO data.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Message-Id: <20240722160745.67904-6-philmd@linaro.org>

9 months agoutil/fifo8: Rename fifo8_peek_buf() -> fifo8_peek_bufptr()
Philippe Mathieu-Daudé [Mon, 22 Jul 2024 11:21:44 +0000 (13:21 +0200)]
util/fifo8: Rename fifo8_peek_buf() -> fifo8_peek_bufptr()

Since fifo8_peek_buf() return a const buffer (which points
directly into the FIFO backing store). Rename it using the
'bufptr' suffix to better reflect that it is a pointer to
the internal buffer that is being returned. This will help
differentiate with methods *copying* the FIFO data.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Message-Id: <20240722160745.67904-5-philmd@linaro.org>

9 months agoutil/fifo8: Use fifo8_reset() in fifo8_create()
Philippe Mathieu-Daudé [Fri, 10 Nov 2023 06:11:32 +0000 (07:11 +0100)]
util/fifo8: Use fifo8_reset() in fifo8_create()

Avoid open-coding fifo8_reset() in fifo8_create().

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Message-Id: <20240722160745.67904-4-philmd@linaro.org>

9 months agoutil/fifo8: Fix style
Philippe Mathieu-Daudé [Mon, 22 Jul 2024 12:15:31 +0000 (14:15 +0200)]
util/fifo8: Fix style

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Message-Id: <20240722160745.67904-3-philmd@linaro.org>

9 months agochardev/char-fe: Document returned value on error
Philippe Mathieu-Daudé [Fri, 10 Nov 2023 05:49:35 +0000 (06:49 +0100)]
chardev/char-fe: Document returned value on error

qemu_chr_fe_add_watch() and qemu_chr_fe_write[_all]()
return -1 on error. Mention it in the documentation.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Message-Id: <20240722160745.67904-2-philmd@linaro.org>

9 months agohw/char/goldfish: Use DMA memory API
Philippe Mathieu-Daudé [Tue, 23 Jul 2024 18:14:28 +0000 (20:14 +0200)]
hw/char/goldfish: Use DMA memory API

Rather than using address_space_rw(..., 0 or 1),
use the simpler DMA memory API which expand to
the same code. This allows removing a cast on
the 'buf' variable which is really const. Since
'buf' is only used in the CMD_READ_BUFFER case,
we can reduce its scope.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Message-Id: <20240723181850.46000-1-philmd@linaro.org>

9 months agohw/nubus/virtio-mmio: Fix missing ERRP_GUARD() in realize handler
Zhao Liu [Tue, 23 Jul 2024 16:18:02 +0000 (00:18 +0800)]
hw/nubus/virtio-mmio: Fix missing ERRP_GUARD() in realize handler

According to the comment in qapi/error.h, dereferencing @errp requires
ERRP_GUARD():

* = Why, when and how to use ERRP_GUARD() =
*
* Without ERRP_GUARD(), use of the @errp parameter is restricted:
* - It must not be dereferenced, because it may be null.
...
* ERRP_GUARD() lifts these restrictions.
*
* To use ERRP_GUARD(), add it right at the beginning of the function.
* @errp can then be used without worrying about the argument being
* NULL or &error_fatal.
*
* Using it when it's not needed is safe, but please avoid cluttering
* the source with useless code.

In nubus_virtio_mmio_realize(), @errp is dereferenced without
ERRP_GUARD().

Although nubus_virtio_mmio_realize() - as a DeviceClass.realize()
method - is never passed a null @errp argument, it should follow the
rules on @errp usage.  Add the ERRP_GUARD() there.

Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Zhao Liu <zhao1.liu@intel.com>
Message-ID: <20240723161802.1377985-1-zhao1.liu@intel.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
9 months agodump: make range overlap check more readable
Yao Xingtao [Mon, 22 Jul 2024 04:07:41 +0000 (00:07 -0400)]
dump: make range overlap check more readable

use ranges_overlap() instead of open-coding the overlap check to improve
the readability of the code.

Signed-off-by: Yao Xingtao <yaoxt.fnst@fujitsu.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-ID: <20240722040742.11513-13-yaoxt.fnst@fujitsu.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
9 months agocrypto/block-luks: make range overlap check more readable
Yao Xingtao [Mon, 22 Jul 2024 04:07:40 +0000 (00:07 -0400)]
crypto/block-luks: make range overlap check more readable

use ranges_overlap() instead of open-coding the overlap check to improve
the readability of the code.

Signed-off-by: Yao Xingtao <yaoxt.fnst@fujitsu.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Tested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-ID: <20240722040742.11513-12-yaoxt.fnst@fujitsu.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
9 months agosystem/memory_mapping: make range overlap check more readable
Yao Xingtao [Mon, 22 Jul 2024 04:07:38 +0000 (00:07 -0400)]
system/memory_mapping: make range overlap check more readable

use ranges_overlap() instead of open-coding the overlap check to improve
the readability of the code.

Signed-off-by: Yao Xingtao <yaoxt.fnst@fujitsu.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Tested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-ID: <20240722040742.11513-10-yaoxt.fnst@fujitsu.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
9 months agosparc/ldst_helper: make range overlap check more readable
Yao Xingtao [Mon, 22 Jul 2024 04:07:37 +0000 (00:07 -0400)]
sparc/ldst_helper: make range overlap check more readable

use ranges_overlap() instead of open-coding the overlap check to improve
the readability of the code.

Signed-off-by: Yao Xingtao <yaoxt.fnst@fujitsu.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20240722040742.11513-9-yaoxt.fnst@fujitsu.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
9 months agocxl/mailbox: make range overlap check more readable
Yao Xingtao [Mon, 22 Jul 2024 04:07:33 +0000 (00:07 -0400)]
cxl/mailbox: make range overlap check more readable

use ranges_overlap() instead of open-coding the overlap check to improve
the readability of the code.

Signed-off-by: Yao Xingtao <yaoxt.fnst@fujitsu.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Tested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20240722040742.11513-5-yaoxt.fnst@fujitsu.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
9 months agoutil/range: Make ranges_overlap() return bool
Yao Xingtao [Mon, 22 Jul 2024 04:07:30 +0000 (00:07 -0400)]
util/range: Make ranges_overlap() return bool

Just like range_overlaps_range(), use the returned bool value
to check whether 2 given ranges overlap.

Signed-off-by: Yao Xingtao <yaoxt.fnst@fujitsu.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20240722040742.11513-2-yaoxt.fnst@fujitsu.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
9 months agohw/mips/loongson3_virt: remove useless type cast
Yao Xingtao [Mon, 22 Jul 2024 09:17:27 +0000 (05:17 -0400)]
hw/mips/loongson3_virt: remove useless type cast

The type of kernel_entry, kernel_low and kernel_high is uint64_t, cast
the pointer of this type to uint64_t* is useless.

Signed-off-by: Yao Xingtao <yaoxt.fnst@fujitsu.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20240722091728.4334-2-yaoxt.fnst@fujitsu.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>