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authorOlof Johansson <olof@lixom.net>2005-09-03 15:55:59 -0700
committerLinus Torvalds <torvalds@evo.osdl.org>2005-09-05 00:06:01 -0700
commit233ccd0d0452682edb51725410e0f8c0384e8b34 (patch)
tree061f94c9d9b15087328095b4b4ab1b26aa6cadd2 /arch/ppc64
parentb749bfcd1be72f8cb8310e1cac12825bda029432 (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>
Diffstat (limited to 'arch/ppc64')
-rw-r--r--arch/ppc64/kernel/pSeries_lpar.c4
-rw-r--r--arch/ppc64/kernel/pacaData.c1
2 files changed, 5 insertions, 0 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