KVM: x86: use the KVM side max supported fixed counter
authorWei Wang <wei.w.wang@intel.com>
Tue, 1 Feb 2022 21:23:22 +0000 (13:23 -0800)
committerPeter Zijlstra <peterz@infradead.org>
Wed, 2 Feb 2022 12:11:44 +0000 (13:11 +0100)
commit0144ba0c5bd3176647bb4d49a697d231610c78b7
tree0ab2d112038890e6522ed0ceb38481d8fd9c6054
parent2145e77fecfb3965b1dc299bac203b167238bd0b
KVM: x86: use the KVM side max supported fixed counter

KVM vPMU doesn't support to emulate all the fixed counters that the
host PMU driver has supported, e.g. the fixed counter 3 used by
Topdown metrics hasn't been supported by KVM so far.

Rename MAX_FIXED_COUNTERS to KVM_PMC_MAX_FIXED to have a more
straightforward naming convention as INTEL_PMC_MAX_FIXED used by the
host PMU driver, and fix vPMU to use the KVM side KVM_PMC_MAX_FIXED
for the virtual fixed counter emulation, instead of the host side
INTEL_PMC_MAX_FIXED.

Signed-off-by: Wei Wang <wei.w.wang@intel.com>
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/1643750603-100733-2-git-send-email-kan.liang@linux.intel.com
arch/x86/include/asm/kvm_host.h
arch/x86/kvm/cpuid.c
arch/x86/kvm/pmu.h
arch/x86/kvm/vmx/pmu_intel.c
arch/x86/kvm/x86.c