KVM: x86: Refactor kvm_cpuid() param that controls out-of-range logic
Invert and rename the kvm_cpuid() param that controls out-of-range logic
to better reflect the semantics of the affected callers, i.e. callers
that bypass the out-of-range logic do so because they are looking up an
exact guest CPUID entry, e.g. to query the maxphyaddr.
Similarly, rename kvm_cpuid()'s internal "found" to "exact" to clarify
that it tracks whether or not the exact requested leaf was found, as
opposed to any usable leaf being found.
No functional change intended.
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index 6663f68..fefa32d 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -2722,7 +2722,7 @@ static bool vendor_intel(struct x86_emulate_ctxt *ctxt)
u32 eax, ebx, ecx, edx;
eax = ecx = 0;
- ctxt->ops->get_cpuid(ctxt, &eax, &ebx, &ecx, &edx, false);
+ ctxt->ops->get_cpuid(ctxt, &eax, &ebx, &ecx, &edx, true);
return is_guest_vendor_intel(ebx, ecx, edx);
}
@@ -2740,7 +2740,7 @@ static bool em_syscall_is_enabled(struct x86_emulate_ctxt *ctxt)
eax = 0x00000000;
ecx = 0x00000000;
- ops->get_cpuid(ctxt, &eax, &ebx, &ecx, &edx, false);
+ ops->get_cpuid(ctxt, &eax, &ebx, &ecx, &edx, true);
/*
* remark: Intel CPUs only support "syscall" in 64bit longmode. Also a
* 64bit guest with a 32bit compat-app running will #UD !! While this
@@ -3971,7 +3971,7 @@ static int em_cpuid(struct x86_emulate_ctxt *ctxt)
eax = reg_read(ctxt, VCPU_REGS_RAX);
ecx = reg_read(ctxt, VCPU_REGS_RCX);
- ctxt->ops->get_cpuid(ctxt, &eax, &ebx, &ecx, &edx, true);
+ ctxt->ops->get_cpuid(ctxt, &eax, &ebx, &ecx, &edx, false);
*reg_write(ctxt, VCPU_REGS_RAX) = eax;
*reg_write(ctxt, VCPU_REGS_RBX) = ebx;
*reg_write(ctxt, VCPU_REGS_RCX) = ecx;
@@ -4241,7 +4241,7 @@ static int check_cr_write(struct x86_emulate_ctxt *ctxt)
eax = 0x80000008;
ecx = 0;
if (ctxt->ops->get_cpuid(ctxt, &eax, &ebx, &ecx,
- &edx, false))
+ &edx, true))
maxphyaddr = eax & 0xff;
else
maxphyaddr = 36;