Messages in this thread |  | | From | Peter Xu <> | Subject | [PATCH 0/2] KVM: X86: A few fixes around ignore_msrs | Date | Mon, 22 Jun 2020 18:04:40 -0400 |
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Currently ignore_msrs and report_ignored_msrs have a few issues:
- Errors could be dumped to dmesg even if the msr access is triggered inside kvm itself (e.g., kvm_cpuid), while what we really want to trap should be either guest msr accesses, or KVM_SET_MSRS.
- These two parameters didn't apply to feature msrs.
Each of the patch in this series tries to handle one of the issues.
Here KVM_MSR_RET_INVALID is introduced. Ideally it can be an enum with both 0/1 defined too, but I'll see whether there's any feedback first about this version.
This originates from a discussion between Paolo and me on an unexpected warning msr access message that triggered on a RT system, which seemed to have caused some system jitters.
Please have a look, thanks.
Peter Xu (2): KVM: X86: Move ignore_msrs handling upper the stack KVM: X86: Do the same ignore_msrs check for feature msrs
arch/x86/kvm/svm/svm.c | 2 +- arch/x86/kvm/vmx/vmx.c | 2 +- arch/x86/kvm/x86.c | 90 +++++++++++++++++++++++++++++------------- arch/x86/kvm/x86.h | 2 + 4 files changed, 66 insertions(+), 30 deletions(-)
-- 2.26.2
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