KVM: x86: Consolidate CPUID fault handling for emulator and interception logic

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Extract the logic for emulating CPUID faulting (where CPUID #GPs at CPL>0
outside of SMM) into a dedicated helper and use the helper for both the
full emulator and the intercepted-CPUID paths.

Opportunistically drop kvm_require_cpl(), as kvm_emulate_cpuid() was the
one and only user.

No functional change intended.

[jim: Add EXPORT_STATIC_CALL_GPL(kvm_x86_get_cpl) so that KVM vendor
modules can call kvm_is_cpuid_allowed(). Fix typo in commit message.]

Signed-off-by: Jim Mattson <jmattson@google.com>
Reviewed-by: Binbin Wu <binbin.wu@linux.intel.com>
Link: https://patch.msgid.link/20260527174347.2356165-2-jmattson@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

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This commit is contained in:

Sean Christopherson 2026-05-27 10:43:43 -07:00

parent 986833d381

commit cf7d65d1d6

6 changed files with 20 additions and 20 deletions

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1

arch/x86/include/asm/kvm_host.h

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5

arch/x86/kvm/cpuid.c

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arch/x86/kvm/cpuid.h

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arch/x86/kvm/emulate.c

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arch/x86/kvm/kvm_emulate.h

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arch/x86/kvm/x86.c

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