KVM: VMX: Fold __vmx_vcpu_run() back into vmx_vcpu_run()

...now that the code is no longer tagged with STACK_FRAME_NON_STANDARD.
Arguably, providing __vmx_vcpu_run() to break up vmx_vcpu_run() is
valuable on its own, but the previous split was purposely made as small
as possible to limit the effects STACK_FRAME_NON_STANDARD.  In other
words, the current split is now completely arbitrary and likely not the
most logical.

This also allows renaming ____vmx_vcpu_run() to __vmx_vcpu_run() in a
future patch.

Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index 0e6e2dd..e61bb8d 100644 (file)
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -6371,37 +6371,6 @@ void vmx_update_host_rsp(struct vcpu_vmx *vmx, unsigned long host_rsp)
        }
 }
 
-static void __vmx_vcpu_run(struct kvm_vcpu *vcpu, struct vcpu_vmx *vmx)
-{
-       if (static_branch_unlikely(&vmx_l1d_should_flush))
-               vmx_l1d_flush(vcpu);
-
-       if (vcpu->arch.cr2 != read_cr2())
-               write_cr2(vcpu->arch.cr2);
-
-       asm(
-               "call ____vmx_vcpu_run \n\t"
-             : ASM_CALL_CONSTRAINT, "=b"(vmx->fail),
-#ifdef CONFIG_X86_64
-               "=D"((int){0}), "=S"((int){0})
-             : "D"(vmx), "S"(&vcpu->arch.regs),
-#else
-               "=a"((int){0}), "=d"((int){0})
-             : "a"(vmx), "d"(&vcpu->arch.regs),
-#endif
-               "b"(vmx->loaded_vmcs->launched)
-             : "cc", "memory"
-#ifdef CONFIG_X86_64
-               , "rax", "rcx", "rdx"
-               , "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15"
-#else
-               , "ecx", "edi", "esi"
-#endif
-             );
-
-       vcpu->arch.cr2 = read_cr2();
-}
-
 static void vmx_vcpu_run(struct kvm_vcpu *vcpu)
 {
        struct vcpu_vmx *vmx = to_vmx(vcpu);
@@ -6469,7 +6438,33 @@ static void vmx_vcpu_run(struct kvm_vcpu *vcpu)
         */
        x86_spec_ctrl_set_guest(vmx->spec_ctrl, 0);
 
-       __vmx_vcpu_run(vcpu, vmx);
+       if (static_branch_unlikely(&vmx_l1d_should_flush))
+               vmx_l1d_flush(vcpu);
+
+       if (vcpu->arch.cr2 != read_cr2())
+               write_cr2(vcpu->arch.cr2);
+
+       asm(
+               "call ____vmx_vcpu_run \n\t"
+             : ASM_CALL_CONSTRAINT, "=b"(vmx->fail),
+#ifdef CONFIG_X86_64
+               "=D"((int){0}), "=S"((int){0})
+             : "D"(vmx), "S"(&vcpu->arch.regs),
+#else
+               "=a"((int){0}), "=d"((int){0})
+             : "a"(vmx), "d"(&vcpu->arch.regs),
+#endif
+               "b"(vmx->loaded_vmcs->launched)
+             : "cc", "memory"
+#ifdef CONFIG_X86_64
+               , "rax", "rcx", "rdx"
+               , "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15"
+#else
+               , "ecx", "edi", "esi"
+#endif
+             );
+
+       vcpu->arch.cr2 = read_cr2();
 
        /*
         * We do not use IBRS in the kernel. If this vCPU has used the