Commit-ID: 19f2d8fa98644c7b78845b1d66abeae4e3d9dfa8 Gitweb: https://git.kernel.org/tip/19f2d8fa98644c7b78845b1d66abeae4e3d9dfa8 Author: Josh Poimboeuf <jpoim...@redhat.com> AuthorDate: Wed, 17 Jul 2019 20:36:38 -0500 Committer: Thomas Gleixner <t...@linutronix.de> CommitDate: Thu, 18 Jul 2019 21:01:03 +0200
x86/kvm: Replace vmx_vmenter()'s call to kvm_spurious_fault() with UD2 Objtool reports the following: arch/x86/kvm/vmx/vmenter.o: warning: objtool: vmx_vmenter()+0x14: call without frame pointer save/setup But frame pointers are necessarily broken anyway, because __vmx_vcpu_run() clobbers RBP with the guest's value before calling vmx_vmenter(). So calling without a frame pointer doesn't make things any worse. Make objtool happy by changing the call to a UD2. Suggested-by: Paolo Bonzini <pbonz...@redhat.com> Signed-off-by: Josh Poimboeuf <jpoim...@redhat.com> Signed-off-by: Thomas Gleixner <t...@linutronix.de> Acked-by: Peter Zijlstra (Intel) <pet...@infradead.org> Acked-by: Paolo Bonzini <pbonz...@redhat.com> Link: https://lkml.kernel.org/r/9fc2216c9dc972f95bb65ce2966a682c6bda1cb0.1563413318.git.jpoim...@redhat.com --- arch/x86/kvm/vmx/vmenter.S | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/x86/kvm/vmx/vmenter.S b/arch/x86/kvm/vmx/vmenter.S index d4cb1945b2e3..4010d519eb8c 100644 --- a/arch/x86/kvm/vmx/vmenter.S +++ b/arch/x86/kvm/vmx/vmenter.S @@ -54,9 +54,9 @@ ENTRY(vmx_vmenter) ret 3: cmpb $0, kvm_rebooting - jne 4f - call kvm_spurious_fault -4: ret + je 4f + ret +4: ud2 .pushsection .fixup, "ax" 5: jmp 3b
