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KVM: VMX: Reorder clearing of registers in the vCPU-run assembly flow

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Move the clearing of the common registers (not 64-bit-only) to the start
of the flow that clears registers holding guest state.  This is
purely a cosmetic change so that the label doesn't point at a blank line
and a #define.

No functional change intended.

Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Sean Christopherson 2019-01-25 07:41:20 -08:00 committed by Paolo Bonzini
parent fc2ba5a27a
commit 4f44c4eec5
1 changed files with 6 additions and 7 deletions
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13
arch/x86/kvm/vmx/vmenter.S
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@ -185,7 +185,12 @@ ENTRY(__vmx_vcpu_run)
* free. RSP and RAX are exempt as RSP is restored by hardware during * free. RSP and RAX are exempt as RSP is restored by hardware during
* VM-Exit and RAX is explicitly loaded with 0 or 1 to return VM-Fail. * VM-Exit and RAX is explicitly loaded with 0 or 1 to return VM-Fail.
*/ */
1: 1: xor %ebx, %ebx
xor %ecx, %ecx
xor %edx, %edx
xor %esi, %esi
xor %edi, %edi
xor %ebp, %ebp
#ifdef CONFIG_X86_64 #ifdef CONFIG_X86_64
xor %r8d, %r8d xor %r8d, %r8d
xor %r9d, %r9d xor %r9d, %r9d
@ -196,12 +201,6 @@ ENTRY(__vmx_vcpu_run)
xor %r14d, %r14d xor %r14d, %r14d
xor %r15d, %r15d xor %r15d, %r15d
#endif #endif
xor %ebx, %ebx
xor %ecx, %ecx
xor %edx, %edx
xor %esi, %esi
xor %edi, %edi
xor %ebp, %ebp
/* "POP" @regs. */ /* "POP" @regs. */
add $WORD_SIZE, %_ASM_SP add $WORD_SIZE, %_ASM_SP