From: Avi Kivity <avi@qumranet.com>
Date: Thu, 31 May 2007 14:17:06 +0000 (+0300)
Subject: KVM: MMU: Remove cr0.wp tricks
X-Git-Tag: v2.6.23-rc1~520^2~39
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4436d466219a6a7874ebc19eb6523c3a9a280dcc;p=linux-2.6

KVM: MMU: Remove cr0.wp tricks

No longer needed as we do everything in one place.

Signed-off-by: Avi Kivity <avi@qumranet.com>
---

diff --git a/drivers/kvm/paging_tmpl.h b/drivers/kvm/paging_tmpl.h
index fabc2c9093..59b4cb29e0 100644
--- a/drivers/kvm/paging_tmpl.h
+++ b/drivers/kvm/paging_tmpl.h
@@ -240,17 +240,6 @@ static void FNAME(set_pte_common)(struct kvm_vcpu *vcpu,
 
 	spte |= paddr;
 
-	if (!write_fault && (spte & PT_SHADOW_USER_MASK) &&
-	    !(spte & PT_USER_MASK)) {
-		/*
-		 * If supervisor write protect is disabled, we shadow kernel
-		 * pages as user pages so we can trap the write access.
-		 */
-		spte |= PT_USER_MASK;
-		spte &= ~PT_WRITABLE_MASK;
-		access_bits &= ~PT_WRITABLE_MASK;
-	}
-
 	if ((access_bits & PT_WRITABLE_MASK)
 	    || (write_fault && !is_write_protection(vcpu) && !user_fault)) {
 		struct kvm_mmu_page *shadow;