linux-kernel - [PATCH 02/01] KVM: x86: Use a typedef for fastop functions

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Message-Id: <20200122044339.4888-1-sean.j.christopherson@intel.com>
Date:   Tue, 21 Jan 2020 20:43:39 -0800
From:   Sean Christopherson <sean.j.christopherson@...el.com>
To:     Paolo Bonzini <pbonzini@...hat.com>
Cc:     Sean Christopherson <sean.j.christopherson@...el.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Joerg Roedel <joro@...tes.org>, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org, Miaohe Lin <linmiaohe@...wei.com>
Subject: [PATCH 02/01] KVM: x86: Use a typedef for fastop functions

Add a typedef to for the fastop function prototype to make the code more
readable.

No functional change intended.

Cc: Miaohe Lin <linmiaohe@...wei.com>
Signed-off-by: Sean Christopherson <sean.j.christopherson@...el.com>
---

Applies on top of Miaohe's patch.  Feel free to squash this.

 arch/x86/kvm/emulate.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index 0accce94f660..ddbc61984227 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -311,7 +311,9 @@ static void invalidate_registers(struct x86_emulate_ctxt *ctxt)
 #define ON64(x)
 #endif
 
-static int fastop(struct x86_emulate_ctxt *ctxt, void (*fop)(struct fastop *));
+typedef void (*fastop_t)(struct fastop *);
+
+static int fastop(struct x86_emulate_ctxt *ctxt, fastop_t fop);
 
 #define __FOP_FUNC(name) \
 	".align " __stringify(FASTOP_SIZE) " \n\t" \
@@ -5502,7 +5504,7 @@ static void fetch_possible_mmx_operand(struct operand *op)
 		read_mmx_reg(&op->mm_val, op->addr.mm);
 }
 
-static int fastop(struct x86_emulate_ctxt *ctxt, void (*fop)(struct fastop *))
+static int fastop(struct x86_emulate_ctxt *ctxt, fastop_t fop)
 {
 	ulong flags = (ctxt->eflags & EFLAGS_MASK) | X86_EFLAGS_IF;
 
@@ -5680,12 +5682,10 @@ int x86_emulate_insn(struct x86_emulate_ctxt *ctxt)
 		ctxt->eflags &= ~X86_EFLAGS_RF;
 
 	if (ctxt->execute) {
-		if (ctxt->d & Fastop) {
-			void (*fop)(struct fastop *) = (void *)ctxt->execute;
-			rc = fastop(ctxt, fop);
-		} else {
+		if (ctxt->d & Fastop)
+			rc = fastop(ctxt, (fastop_t)ctxt->execute);
+		else
 			rc = ctxt->execute(ctxt);
-		}
 		if (rc != X86EMUL_CONTINUE)
 			goto done;
 		goto writeback;
-- 
2.24.1