[PATCH 6/10] provide read and write cr8 paravirt hooks

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From: Glauber de Oliveira Costa
Date: Friday, January 18, 2008 - 10:20 am

Since the cr8 manipulation functions ended up staying in the tree,
they can't be defined just when PARAVIRT is off: In this patch,
those functions are defined for the PARAVIRT case too.

Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com>
---
 include/asm-x86/system.h |   30 ++++++++++++++++--------------
 1 files changed, 16 insertions(+), 14 deletions(-)

diff --git a/include/asm-x86/system.h b/include/asm-x86/system.h
index 692c28c..a33c3f4 100644
--- a/include/asm-x86/system.h
+++ b/include/asm-x86/system.h
@@ -236,6 +236,20 @@ static inline void native_write_cr4(unsigned long val)
 	asm volatile("mov %0,%%cr4": :"r" (val), "m" (__force_order));
 }
 
+#ifdef CONFIG_X86_64
+static inline unsigned long native_read_cr8(void)
+{
+	unsigned long cr8;
+	asm volatile("movq %%cr8,%0" : "=r" (cr8));
+	return cr8;
+}
+
+static inline void native_write_cr8(unsigned long val)
+{
+	asm volatile("movq %0,%%cr8" :: "r" (val) : "memory");
+}
+#endif
+
 static inline void native_wbinvd(void)
 {
 	asm volatile("wbinvd": : :"memory");
@@ -253,21 +267,9 @@ static inline void native_wbinvd(void)
 #define read_cr4_safe()	(native_read_cr4_safe())
 #define write_cr4(x)	(native_write_cr4(x))
 #define wbinvd()	(native_wbinvd())
-
 #ifdef CONFIG_X86_64
-
-static inline unsigned long read_cr8(void)
-{
-	unsigned long cr8;
-	asm volatile("movq %%cr8,%0" : "=r" (cr8));
-	return cr8;
-}
-
-static inline void write_cr8(unsigned long val)
-{
-	asm volatile("movq %0,%%cr8" :: "r" (val) : "memory");
-}
-
+#define read_cr8()	(native_read_cr8())
+#define write_cr8(x)	(native_write_cr8(x))
 #endif
 
 /* Clear the 'TS' bit */
-- 
1.4.4.2

--
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Messages in current thread:
[PATCH 0/10] Tree fixes for PARAVIRT, Glauber de Oliveira ..., (Fri Jan 18, 10:20 am)
[PATCH 1/10] add missing parameter for lookup_address, Glauber de Oliveira ..., (Fri Jan 18, 10:20 am)
[PATCH 2/10] add stringify header, Glauber de Oliveira ..., (Fri Jan 18, 10:20 am)
[PATCH 3/10] provide a native_init_IRQ function to x86_64, Glauber de Oliveira ..., (Fri Jan 18, 10:20 am)
[PATCH 4/10] put generic mm_hooks include into PARAVIRT, Glauber de Oliveira ..., (Fri Jan 18, 10:20 am)
[PATCH 5/10] puts read and write cr8 into pv_cpu_ops, Glauber de Oliveira ..., (Fri Jan 18, 10:20 am)
[PATCH 6/10] provide read and write cr8 paravirt hooks, Glauber de Oliveira ..., (Fri Jan 18, 10:20 am)
[PATCH 7/10] fill pv_cpu_ops structure with cr8 fields, Glauber de Oliveira ..., (Fri Jan 18, 10:20 am)
[PATCH 8/10] add asm_offset PARAVIRT constants, Glauber de Oliveira ..., (Fri Jan 18, 10:20 am)
[PATCH 9/10] provide __parainstructions section, Glauber de Oliveira ..., (Fri Jan 18, 10:20 am)
[PATCH 10/10] change function orders in paravirt.h, Glauber de Oliveira ..., (Fri Jan 18, 10:20 am)
Re: [PATCH 10/10] change function orders in paravirt.h, Jeremy Fitzhardinge, (Fri Jan 18, 1:24 pm)
Re: [PATCH 0/10] Tree fixes for PARAVIRT, Ingo Molnar, (Fri Jan 18, 1:32 pm)
Re: [PATCH 9/10] provide __parainstructions section, Sam Ravnborg, (Fri Jan 18, 1:41 pm)
Re: [PATCH 0/10] Tree fixes for PARAVIRT, Ingo Molnar, (Fri Jan 18, 2:37 pm)
Re: [PATCH 0/10] Tree fixes for PARAVIRT, Zachary Amsden, (Fri Jan 18, 2:54 pm)
Re: [PATCH 0/10] Tree fixes for PARAVIRT, Ingo Molnar, (Fri Jan 18, 3:02 pm)
Re: [PATCH 0/10] Tree fixes for PARAVIRT, Jeremy Fitzhardinge, (Fri Jan 18, 3:31 pm)
Re: [PATCH 9/10] provide __parainstructions section, Jeremy Fitzhardinge, (Fri Jan 18, 3:47 pm)
Re: [PATCH] fill in missing pv_mmu_ops entries for PAGETAB ..., Jeremy Fitzhardinge, (Sat Jan 19, 10:05 pm)
Re: [PATCH] fill in missing pv_mmu_ops entries for PAGETAB ..., Eduardo Pereira Habkost, (Mon Jan 21, 1:44 pm)
Re: [PATCH] fill in missing pv_mmu_ops entries for PAGETAB ..., Jeremy Fitzhardinge, (Mon Jan 21, 2:19 pm)
Re: [PATCH] fill in missing pv_mmu_ops entries for PAGETAB ..., Glauber de Oliveira ..., (Mon Jan 28, 3:33 pm)