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authorMihai Caraman <mihai.caraman@freescale.com>2012-09-06 02:49:44 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2012-09-07 09:48:49 +1000
commit0127262c01f0beb485f917c720d1d95d165dfdbf (patch)
tree8ea17c81f09dec7c6e8bfdc8f3288ec7cfa439c6 /arch/powerpc/include/asm/paca.h
parent8b64a9dfb091f1eca8b7e58da82f1e7d1d5fe0ad (diff)
powerpc: Restore VDSO information on critical exception om BookE
Critical exception on 64-bit booke uses user-visible SPRG3 as scratch. Restore VDSO information in SPRG3 on exception prolog. Use a common sprg3 field in PACA for all powerpc64 architectures. Signed-off-by: Mihai Caraman <mihai.caraman@freescale.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/include/asm/paca.h')
-rw-r--r--arch/powerpc/include/asm/paca.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/paca.h b/arch/powerpc/include/asm/paca.h
index daf813fea91..7796519fd23 100644
--- a/arch/powerpc/include/asm/paca.h
+++ b/arch/powerpc/include/asm/paca.h
@@ -136,6 +136,7 @@ struct paca_struct {
u8 io_sync; /* writel() needs spin_unlock sync */
u8 irq_work_pending; /* IRQ_WORK interrupt while soft-disable */
u8 nap_state_lost; /* NV GPR values lost in power7_idle */
+ u64 sprg3; /* Saved user-visible sprg */
#ifdef CONFIG_PPC_POWERNV
/* Pointer to OPAL machine check event structure set by the