linux-kernel - [PATCH 5.10 132/148] x86, kvm: use proper ASM macros for kvm_vcpu_is

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Message-Id: <20220723095301.320884513@linuxfoundation.org>
Date:   Sat, 23 Jul 2022 11:55:44 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Paolo Bonzini <pbonzini@...hat.com>,
        Ben Hutchings <bwh@...nel.org>
Subject: [PATCH 5.10 132/148] x86, kvm: use proper ASM macros for kvm_vcpu_is_preempted

From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

commit edbaf6e5e93acda96aae23ba134ef3c1466da3b5 upstream.

The build rightfully complains about:
	arch/x86/kernel/kvm.o: warning: objtool: __raw_callee_save___kvm_vcpu_is_preempted()+0x12: missing int3 after ret

because the ASM_RET call is not being used correctly in kvm_vcpu_is_preempted().

This was hand-fixed-up in the kvm merge commit a4cfff3f0f8c ("Merge branch
'kvm-older-features' into HEAD") which of course can not be backported to
stable kernels, so just fix this up directly instead.

Cc: Paolo Bonzini <pbonzini@...hat.com>
Cc: Ben Hutchings <bwh@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 arch/x86/kernel/kvm.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/x86/kernel/kvm.c
+++ b/arch/x86/kernel/kvm.c
@@ -953,7 +953,7 @@ asm(
 "movq	__per_cpu_offset(,%rdi,8), %rax;"
 "cmpb	$0, " __stringify(KVM_STEAL_TIME_preempted) "+steal_time(%rax);"
 "setne	%al;"
-"ret;"
+ASM_RET
 ".size __raw_callee_save___kvm_vcpu_is_preempted, .-__raw_callee_save___kvm_vcpu_is_preempted;"
 ".popsection");