TononixOS/ubports_kernel_google_msm
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

[PATCH] paravirt: Add APIC accessors to paravirt-ops.

Browse Source 
Add APIC accessors to paravirt-ops.  Unfortunately, we need two write
functions, as some older broken hardware requires workarounds for
Pentium APIC errata - this is the purpose of apic_write_atomic.

AK: replaced __inline with inline

Signed-off-by: Zachary Amsden <zach@vmware.com>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Andi Kleen <ak@suse.de>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
This commit is contained in:
Rusty Russell
2006-12-07 02:14:08 +01:00
committed by Andi Kleen
parent 6020c8f315
commit 13623d7930
3 changed files with 47 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
include/asm-i386/apic.h
View File

@@ -37,18 +37,27 @@ extern void generic_apic_probe(void);
/*
* Basic functions accessing APICs.
*/
#ifdef CONFIG_PARAVIRT
#include <asm/paravirt.h>
#else
#define apic_write native_apic_write
#define apic_write_atomic native_apic_write_atomic
#define apic_read native_apic_read
#endif
static __inline void apic_write(unsigned long reg, unsigned long v)
static __inline fastcall void native_apic_write(unsigned long reg,
unsigned long v)
{
*((volatile unsigned long *)(APIC_BASE+reg)) = v;
}
static __inline void apic_write_atomic(unsigned long reg, unsigned long v)
static __inline fastcall void native_apic_write_atomic(unsigned long reg,
unsigned long v)
{
xchg((volatile unsigned long *)(APIC_BASE+reg), v);
}
static __inline unsigned long apic_read(unsigned long reg)
static __inline fastcall unsigned long native_apic_read(unsigned long reg)
{
return *((volatile unsigned long *)(APIC_BASE+reg));
}