Re: [PATCH 07/24] x86,vmx: Fix indirect call

[Peter Zijlstra]

Subject: x86,vmx: Fix indirect call
From: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Date: Tue Jan 23 14:10:19 CET 2018

Replace indirect call with CALL_NOSPEC.

Cc: Paolo Bonzini <pbonzini@xxxxxxxxxx>
Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
---
 - now with THUNK_TARGET()

 arch/x86/kvm/vmx.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -9129,14 +9129,14 @@ static void vmx_handle_external_intr(str
 #endif
 			"pushf\n\t"
 			__ASM_SIZE(push) " $%c[cs]\n\t"
-			"call *%[entry]\n\t"
+			CALL_NOSPEC
 			:
 #ifdef CONFIG_X86_64
 			[sp]"=&r"(tmp),
 #endif
 			ASM_CALL_CONSTRAINT
 			:
-			[entry]"r"(entry),
+			THUNK_TARGET(entry),
 			[ss]"i"(__KERNEL_DS),
 			[cs]"i"(__KERNEL_CS)
 			);