linux-kernel - [PATCH] KVM: Replace the number of page entries per page with PT64_ENT_PER

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Message-Id: <1456843758-2261-1-git-send-email-tianyu.lan@intel.com>
Date:	Tue,  1 Mar 2016 22:49:18 +0800
From:	Lan Tianyu <tianyu.lan@...el.com>
To:	gleb@...nel.org, pbonzini@...hat.com, tglx@...utronix.de,
	mingo@...hat.com, hpa@...or.com, x86@...nel.org
Cc:	Lan Tianyu <tianyu.lan@...el.com>, kvm@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] KVM: Replace the number of page entries per page with PT64_ENT_PER_PAGE macro

This patch is to make code more readable.

Signed-off-by: Lan Tianyu <tianyu.lan@...el.com>
---
 arch/x86/include/asm/kvm_host.h | 2 +-
 arch/x86/kvm/mmu.c              | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 44adbb8..b91a08a 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -265,7 +265,7 @@ struct kvm_mmu_page {
 	/* The page is obsolete if mmu_valid_gen != kvm->arch.mmu_valid_gen.  */
 	unsigned long mmu_valid_gen;
 
-	DECLARE_BITMAP(unsync_child_bitmap, 512);
+	DECLARE_BITMAP(unsync_child_bitmap, PT64_ENT_PER_PAGE);
 
 #ifdef CONFIG_X86_32
 	/*
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 95a955d..d51441b 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -1806,7 +1806,7 @@ static int __mmu_unsync_walk(struct kvm_mmu_page *sp,
 {
 	int i, ret, nr_unsync_leaf = 0;
 
-	for_each_set_bit(i, sp->unsync_child_bitmap, 512) {
+	for_each_set_bit(i, sp->unsync_child_bitmap, PT64_ENT_PER_PAGE) {
 		struct kvm_mmu_page *child;
 		u64 ent = sp->spt[i];
 
-- 
1.8.4.rc0.1.g8f6a3e5.dirty