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| 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 /arch/ppc64 | |
| parent | b749bfcd1be72f8cb8310e1cac12825bda029432 (diff) | |
| download | op-kernel-dev-233ccd0d0452682edb51725410e0f8c0384e8b34.zip op-kernel-dev-233ccd0d0452682edb51725410e0f8c0384e8b34.tar.gz | |
[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>
Diffstat (limited to 'arch/ppc64')
| -rw-r--r-- | arch/ppc64/kernel/pSeries_lpar.c | 4 | ||||
| -rw-r--r-- | arch/ppc64/kernel/pacaData.c | 1 |
2 files changed, 5 insertions, 0 deletions
diff --git a/arch/ppc64/kernel/pSeries_lpar.c b/arch/ppc64/kernel/pSeries_lpar.c index 0a3ddc9..a1d5fdf 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 6182a2c..33a2d8d 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 |
