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| author | Michael Neuling <mikey@neuling.org> | 2006-08-07 10:19:19 +0400 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2006-08-08 11:08:56 +0400 |
| commit | 2f6093c84730b4bad65bcd0f2f904a5769b1dfc5 (patch) | |
| tree | ab4e64a0520e944062f418e91706ff968e23a6ea /arch/powerpc/platforms/pseries/plpar_wrappers.h | |
| parent | 452b5e21216011f2f068e80443568f5f3f3f4d63 (diff) | |
| download | linux-2f6093c84730b4bad65bcd0f2f904a5769b1dfc5.tar.xz | |
[POWERPC] Implement SLB shadow buffer
This adds a shadow buffer for the SLBs and regsiters it with PHYP.
Only the bolted SLB entries (top 3) are shadowed.
The SLB shadow buffer tells the hypervisor what the kernel needs to
have in the SLB for the kernel to be able to function. The hypervisor
can use this information to speed up partition context switches.
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/platforms/pseries/plpar_wrappers.h')
| -rw-r--r-- | arch/powerpc/platforms/pseries/plpar_wrappers.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/pseries/plpar_wrappers.h b/arch/powerpc/platforms/pseries/plpar_wrappers.h index ebd15de7597e..3eb7b294d92f 100644 --- a/arch/powerpc/platforms/pseries/plpar_wrappers.h +++ b/arch/powerpc/platforms/pseries/plpar_wrappers.h @@ -37,6 +37,16 @@ static inline long register_vpa(unsigned long cpu, unsigned long vpa) return vpa_call(0x1, cpu, vpa); } +static inline long unregister_slb_shadow(unsigned long cpu, unsigned long vpa) +{ + return vpa_call(0x7, cpu, vpa); +} + +static inline long register_slb_shadow(unsigned long cpu, unsigned long vpa) +{ + return vpa_call(0x3, cpu, vpa); +} + extern void vpa_init(int cpu); static inline long plpar_pte_enter(unsigned long flags, |