linux-kernel - [PATCH 11/24] read/write_crX, clts and wbinvd for 64-bit paravirt

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Date:	Fri,  9 Nov 2007 16:42:52 -0200
From:	Glauber de Oliveira Costa <gcosta@...hat.com>
To:	linux-kernel@...r.kernel.org
Cc:	akpm@...ux-foundation.org, glommer@...il.com, tglx@...utronix.de,
	mingo@...e.hu, rusty@...tcorp.com.au, ak@...e.de,
	chrisw@...s-sol.org, avi@...ranet.com, anthony@...emonkey.ws,
	virtualization@...ts.linux-foundation.org, lguest@...abs.org,
	kvm-devel@...ts.sourceforge.net, zach@...are.com,
	jun.nakajima@...el.com,
	Glauber de Oliveira Costa <gcosta@...hat.com>,
	Steven Rostedt <rostedt@...dmis.org>
Subject: [PATCH 11/24] read/write_crX, clts and wbinvd for 64-bit paravirt

This patch introduces, and patch callers when needed, native
versions for read/write_crX functions, clts and wbinvd.

Signed-off-by: Glauber de Oliveira Costa <gcosta@...hat.com>
Signed-off-by: Steven Rostedt <rostedt@...dmis.org>
Acked-by: Jeremy Fitzhardinge <jeremy@...source.com>
---
 arch/x86/mm/pageattr_64.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/arch/x86/mm/pageattr_64.c b/arch/x86/mm/pageattr_64.c
index 14ab327..3a483a8 100644
--- a/arch/x86/mm/pageattr_64.c
+++ b/arch/x86/mm/pageattr_64.c
@@ -13,6 +13,7 @@
 #include <asm/tlbflush.h>
 #include <asm/uaccess.h>
 #include <asm/io.h>
+#include <asm/paravirt.h>
 
 pte_t *lookup_address(unsigned long address)
 {
@@ -84,7 +85,7 @@ static void flush_kernel_map(void *arg)
 	   much cheaper than WBINVD. */
 	/* clflush is still broken. Disable for now. */
 	if (1 || !cpu_has_clflush) {
-		asm volatile("wbinvd" ::: "memory");
+		wbinvd();
 	} else {
 		list_for_each_entry(pg, l, lru) {
 			void *addr = page_address(pg);
-- 
1.4.4.2

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