Commit-ID: 3aff5415db7e5a5e50f9b05ce1b0b92a4a55e169 Gitweb: http://git.kernel.org/tip/3aff5415db7e5a5e50f9b05ce1b0b92a4a55e169 Author: Chris J Arges <chris.j.ar...@canonical.com> AuthorDate: Fri, 22 Jan 2016 15:44:38 -0600 Committer: Ingo Molnar <mi...@kernel.org> CommitDate: Tue, 23 Feb 2016 09:04:01 +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 <chris.j.ar...@canonical.com> Reviewed-by: Josh Poimboeuf <jpoim...@redhat.com> Cc: Linus Torvalds <torva...@linux-foundation.org> Cc: Peter Zijlstra <pet...@infradead.org> Cc: Thomas Gleixner <t...@linutronix.de> Cc: g...@kernel.org Cc: k...@vger.kernel.org Cc: live-patch...@vger.kernel.org Cc: pbonz...@redhat.com Link: http://lkml.kernel.org/r/1453499078-9330-3-git-send-email-chris.j.ar...@canonical.com Signed-off-by: Ingo Molnar <mi...@kernel.org> --- 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),
