Commit-ID: 3f62de5f6f369b67b7ac709e3c942c9130d2c51a Gitweb: http://git.kernel.org/tip/3f62de5f6f369b67b7ac709e3c942c9130d2c51a Author: Chris J Arges <[email protected]> AuthorDate: Fri, 22 Jan 2016 15:44:38 -0600 Committer: Ingo Molnar <[email protected]> CommitDate: Wed, 24 Feb 2016 08:35:44 +0100
x86/kvm: Add output operand in vmx_handle_external_intr inline asm Stacktool generates the following warning: stacktool: arch/x86/kvm/vmx.o: vmx_handle_external_intr()+0x67: call without frame pointer save/setup By adding the stackpointer as an output operand, this patch ensures that a stack frame is created when CONFIG_FRAME_POINTER is enabled for the inline assmebly statement. Signed-off-by: Chris J Arges <[email protected]> Reviewed-by: Josh Poimboeuf <[email protected]> Cc: Linus Torvalds <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Ingo Molnar <[email protected]> --- arch/x86/kvm/vmx.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index e2951b6..e153522 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -8356,6 +8356,7 @@ static void vmx_complete_atomic_exit(struct vcpu_vmx *vmx) static void vmx_handle_external_intr(struct kvm_vcpu *vcpu) { u32 exit_intr_info = vmcs_read32(VM_EXIT_INTR_INFO); + register void *__sp asm(_ASM_SP); /* * If external interrupt exists, IF bit is set in rflags/eflags on the @@ -8388,8 +8389,9 @@ static void vmx_handle_external_intr(struct kvm_vcpu *vcpu) "call *%[entry]\n\t" : #ifdef CONFIG_X86_64 - [sp]"=&r"(tmp) + [sp]"=&r"(tmp), #endif + "+r"(__sp) : [entry]"r"(entry), [ss]"i"(__KERNEL_DS),
