linux-kernel - [PATCH v2 4/5] KVM: x86: Drop ____kvm_handle_fault_on

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Message-Id: <20190719204110.18306-5-sean.j.christopherson@intel.com>
Date:   Fri, 19 Jul 2019 13:41:09 -0700
From:   Sean Christopherson <sean.j.christopherson@...el.com>
To:     Paolo Bonzini <pbonzini@...hat.com>,
        Radim Krčmář <rkrcmar@...hat.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        x86@...nel.org, Josh Poimboeuf <jpoimboe@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>
Cc:     "H. Peter Anvin" <hpa@...or.com>, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v2 4/5] KVM: x86: Drop ____kvm_handle_fault_on_reboot()

Remove the variation of __kvm_handle_fault_on_reboot() that accepts a
post-fault cleanup instruction now that its sole user (VMREAD) uses
a different method for handling faults.

Acked-by: Paolo Bonzini <pbonzini@...hat.com>
Signed-off-by: Sean Christopherson <sean.j.christopherson@...el.com>
---
 arch/x86/include/asm/kvm_host.h | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 9739ed615faf..92c59cd923b6 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -1504,7 +1504,7 @@ asmlinkage void kvm_spurious_fault(void);
  * Usually after catching the fault we just panic; during reboot
  * instead the instruction is ignored.
  */
-#define ____kvm_handle_fault_on_reboot(insn, cleanup_insn)		\
+#define __kvm_handle_fault_on_reboot(insn)				\
 	"666: \n\t"							\
 	insn "\n\t"							\
 	"jmp	668f \n\t"						\
@@ -1513,16 +1513,12 @@ asmlinkage void kvm_spurious_fault(void);
 	"668: \n\t"							\
 	".pushsection .fixup, \"ax\" \n\t"				\
 	"700: \n\t"							\
-	cleanup_insn "\n\t"						\
 	"cmpb	$0, kvm_rebooting\n\t"					\
 	"je	667b \n\t"						\
 	"jmp	668b \n\t"						\
 	".popsection \n\t"						\
 	_ASM_EXTABLE(666b, 700b)
 
-#define __kvm_handle_fault_on_reboot(insn)		\
-	____kvm_handle_fault_on_reboot(insn, "")
-
 #define KVM_ARCH_WANT_MMU_NOTIFIER
 int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end);
 int kvm_age_hva(struct kvm *kvm, unsigned long start, unsigned long end);
-- 
2.22.0