diff options
| author | Olof Johansson <olof@lixom.net> | 2005-09-03 15:55:59 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@evo.osdl.org> | 2005-09-05 00:06:01 -0700 |
| commit | 233ccd0d0452682edb51725410e0f8c0384e8b34 (patch) | |
| tree | 061f94c9d9b15087328095b4b4ab1b26aa6cadd2 | |
| parent | b749bfcd1be72f8cb8310e1cac12825bda029432 (diff) | |
[PATCH] ppc64: Add VMX save flag to VPA
We need to indicate to the hypervisor that it needs to save our VMX
registers when switching partitions on a shared-processor system, just as
it needs to for FP and PMC registers.
This could be made to be on-demand when VMX is used, but we don't do that
for FP nor PMC right now either so let's not overcomplicate things.
Signed-off-by: Olof Johansson <olof@lixom.net>
Acked-by: Paul Mackerras <paulus@samba.org>
Cc: Anton Blanchard <anton@samba.org>
Cc: <engebret@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| -rw-r--r-- | arch/ppc64/kernel/pSeries_lpar.c | 4 | ||||
| -rw-r--r-- | arch/ppc64/kernel/pacaData.c | 1 | ||||
| -rw-r--r-- | include/asm-ppc64/lppaca.h | 2 |
3 files changed, 6 insertions, 1 deletions
diff --git a/arch/ppc64/kernel/pSeries_lpar.c b/arch/ppc64/kernel/pSeries_lpar.c index 0a3ddc9227c..a1d5fdfea4a 100644 --- a/arch/ppc64/kernel/pSeries_lpar.c +++ b/arch/ppc64/kernel/pSeries_lpar.c @@ -266,6 +266,10 @@ void vpa_init(int cpu) /* Register the Virtual Processor Area (VPA) */ flags = 1UL << (63 - 18); + + if (cpu_has_feature(CPU_FTR_ALTIVEC)) + paca[cpu].lppaca.vmxregs_in_use = 1; + ret = register_vpa(flags, hwcpu, __pa(vpa)); if (ret) diff --git a/arch/ppc64/kernel/pacaData.c b/arch/ppc64/kernel/pacaData.c index 6182a2cd90a..33a2d8db3f2 100644 --- a/arch/ppc64/kernel/pacaData.c +++ b/arch/ppc64/kernel/pacaData.c @@ -59,6 +59,7 @@ extern unsigned long __toc_start; .fpregs_in_use = 1, \ .end_of_quantum = 0xfffffffffffffffful, \ .slb_count = 64, \ + .vmxregs_in_use = 0, \ }, \ #ifdef CONFIG_PPC_ISERIES diff --git a/include/asm-ppc64/lppaca.h b/include/asm-ppc64/lppaca.h index 70766b5f26c..9e2a6c0649a 100644 --- a/include/asm-ppc64/lppaca.h +++ b/include/asm-ppc64/lppaca.h @@ -108,7 +108,7 @@ struct lppaca volatile u32 virtual_decr; // Virtual DECR for shared procsx78-x7B u16 slb_count; // # of SLBs to maintain x7C-x7D u8 idle; // Indicate OS is idle x7E - u8 reserved5; // Reserved x7F + u8 vmxregs_in_use; // VMX registers in use x7F //============================================================================= |