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KVM: PPC: Book3S HV: Reject mflags=2 (LPCR[AIL]=2) ADDR_TRANS_MODE mode
authorNicholas Piggin <npiggin@gmail.com>
Wed, 2 Oct 2019 06:00:25 +0000 (16:00 +1000)
committerPaul Mackerras <paulus@ozlabs.org>
Tue, 22 Oct 2019 05:29:02 +0000 (16:29 +1100)
commit55d7004299eb917767761f01a208d50afad4f535
tree8f8abe1646e758012d8f11a094b86a6020e6707etree | snapshot
parent6a13cb0c376abb436d060b989018257963656d0ccommit | diff
KVM: PPC: Book3S HV: Reject mflags=2 (LPCR[AIL]=2) ADDR_TRANS_MODE mode

AIL=2 mode has no known users, so is not well tested or supported.
Disallow guests from selecting this mode because it may become
deprecated in future versions of the architecture.

This policy decision is not left to QEMU because KVM support is
required for AIL=2 (when injecting interrupts).

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
arch/powerpc/kvm/book3s_hv.c diff | blob | history
ep93xx device tree rework repo: git://git.maquefel.me/linux.git