diff options
| author | Glauber de Oliveira Costa <gcosta@redhat.com> | 2008-01-30 15:31:07 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-01-30 15:31:07 +0300 |
| commit | c9dcda5ce46c395c5c99003e259e1973dface640 (patch) | |
| tree | aec2a6b41de18d2313c2d620c077835d24222480 /include/asm-x86/paravirt.h | |
| parent | b8d1fae7dbde6a1227fa142acecb48dc3dd63817 (diff) | |
| download | linux-c9dcda5ce46c395c5c99003e259e1973dface640.tar.xz | |
x86: change write msr functions interface
This patche changes the native_write_msr() and friends interface
to explicitly take 2 32-bit registers instead of a 64-bit value.
The change will ease the merge with 64-bit code. As the 64-bit
value will be passed as two registers anyway in i386,
the PVOP_CALL interface has to account for that and use low/high parameters
It would force the x86_64 version to be different.
The change does not make i386 generated code less efficient. As said above,
it would get the values from two registers anyway.
Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/asm-x86/paravirt.h')
| -rw-r--r-- | include/asm-x86/paravirt.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/asm-x86/paravirt.h b/include/asm-x86/paravirt.h index 4782be68d0fa..e95c2a655165 100644 --- a/include/asm-x86/paravirt.h +++ b/include/asm-x86/paravirt.h @@ -115,7 +115,7 @@ struct pv_cpu_ops { /* MSR, PMC and TSR operations. err = 0/-EFAULT. wrmsr returns 0/-EFAULT. */ u64 (*read_msr)(unsigned int msr, int *err); - int (*write_msr)(unsigned int msr, u64 val); + int (*write_msr)(unsigned int msr, unsigned low, unsigned high); u64 (*read_tsc)(void); u64 (*read_pmc)(int counter); |