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authorCatalin Marinas <catalin.marinas@arm.com>2007-01-24 18:47:08 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2007-01-25 16:35:29 +0000
commitc6428464894889e110418928e6b37dc2eb4cee56 (patch)
tree292410b297ef2332715aabd7a87ef9fe0c03de4a /arch/arm/vfp/entry.S
parent412489af76b5c0e4029d4406d93554c22a88fc73 (diff)
downloadlinux-c6428464894889e110418928e6b37dc2eb4cee56.tar.gz
[ARM] 4111/1: Allow VFP to work with thread migration on SMP
The current lazy saving of the VFP registers is no longer possible with thread migration on SMP. This patch implements a per-CPU vfp-state pointer and the saving of the VFP registers at every context switch. The registers restoring is still performed in a lazy way. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/vfp/entry.S')
-rw-r--r--arch/arm/vfp/entry.S1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm/vfp/entry.S b/arch/arm/vfp/entry.S
index 7b595547c1c8..ca2a5ad19ea6 100644
--- a/arch/arm/vfp/entry.S
+++ b/arch/arm/vfp/entry.S
@@ -25,6 +25,7 @@
do_vfp:
enable_irq
ldr r4, .LCvfp
+ ldr r11, [r10, #TI_CPU] @ CPU number
add r10, r10, #TI_VFPSTATE @ r10 = workspace
ldr pc, [r4] @ call VFP entry point