xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Förgrening 0
Kod Ärenden Pull-förfrågningar Actions Packages Projekt Släpp Wiki Aktiviteter

KVM: VMX: Drop redundant capability checks in low level INVVPID helpers

Bläddra i källkod 
Remove the INVVPID capabilities checks from vpid_sync_vcpu_single() and
vpid_sync_vcpu_global() now that all callers ensure the INVVPID variant
is supported.  Note, in some cases the guarantee is provided in concert
with hardware_setup(), which enables VPID if and only if at least of
invvpid_single() or invvpid_global() is supported.

Drop the WARN_ON_ONCE() from vmx_flush_tlb() as vpid_sync_vcpu_single()
will trigger a WARN() on INVVPID failure, i.e. if SINGLE_CONTEXT isn't
supported.

Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Message-Id: <20200320212833.3507-13-sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Sean Christopherson
2020-03-20 14:28:08 -07:00
committad av Paolo Bonzini
förälder ab4b3597ff
incheckning ca431c0cc3
2 ändrade filer med 2 tillägg och 5 borttagningar
Download Patch File Download Diff File Expand all files Collapse all files

6
arch/x86/kvm/vmx/ops.h
Visa fil

@@ -273,14 +273,12 @@ static inline void vpid_sync_vcpu_single(int vpid)
if (vpid == 0)
return;
if (cpu_has_vmx_invvpid_single())
__invvpid(VMX_VPID_EXTENT_SINGLE_CONTEXT, vpid, 0);
__invvpid(VMX_VPID_EXTENT_SINGLE_CONTEXT, vpid, 0);
}
static inline void vpid_sync_vcpu_global(void)
{
if (cpu_has_vmx_invvpid_global())
__invvpid(VMX_VPID_EXTENT_ALL_CONTEXT, 0, 0);
__invvpid(VMX_VPID_EXTENT_ALL_CONTEXT, 0, 0);
}
static inline void vpid_sync_context(int vpid)