[PATCH 1/1] powerpc/book3e: store critical/machine/debug exception thread info
DORMANTno replies
From: Tiejun Chen <hidden>
Date: 2012-10-27 04:22:27
Also in:
lkml
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Linus Torvalds
We need to store thread info to these exception thread info like something we already did for PPC32. Signed-off-by: Tiejun Chen <redacted> --- This patch is followed on my three patches I send recently: [PATCH 1/3] powerpc/book3e: load critical/machine/debug exception stack [PATCH 2/3] powerpc/book3e: support kgdb for kernel space [PATCH 3/3] kgdb/kgdbts: support ppc64 Tiejun arch/powerpc/kernel/exceptions-64e.S | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+)
diff --git a/arch/powerpc/kernel/exceptions-64e.S b/arch/powerpc/kernel/exceptions-64e.S
index c5564d4..4e7083e 100644
--- a/arch/powerpc/kernel/exceptions-64e.S
+++ b/arch/powerpc/kernel/exceptions-64e.S@@ -91,10 +91,28 @@ #define SPRN_GDBELL_SRR0 SPRN_GSRR0 #define SPRN_GDBELL_SRR1 SPRN_GSRR1 +/* Store something to exception thread info */ +#define BOOK3E_STORE_EXC_LEVEL_THEAD_INFO(type) \ + std r14,PACA_EX##type+EX_R14(r13); \ + std r15,PACA_EX##type+EX_R15(r13); \ + ld r14,PACA_EX##type+EX_R1(r13); \ + clrrdi r14,r14,THREAD_SHIFT; \ + clrrdi r15,r1,THREAD_SHIFT; \ + ld r10,TI_FLAGS(r14); \ + std r10,TI_FLAGS(r15); \ + ld r10,TI_PREEMPT(r14); \ + std r10,TI_PREEMPT(r1); \ + ld r10,TI_TASK(r14); \ + std r10,TI_TASK(r1); \ + ld r14,PACA_EX##type+EX_R14(r13); \ + ld r15,PACA_EX##type+EX_R15(r13); \ +1: + #define CRIT_SET_KSTACK \ BOOK3E_LOAD_EXC_LEVEL_STACK(CRIT); \ ld r1,PACA_CRIT_STACK(r13); \ subi r1,r1,SPECIAL_EXC_FRAME_SIZE; + BOOK3E_STORE_EXC_LEVEL_THEAD_INFO(CRIT); #define SPRN_CRIT_SRR0 SPRN_CSRR0 #define SPRN_CRIT_SRR1 SPRN_CSRR1
@@ -102,6 +120,7 @@ BOOK3E_LOAD_EXC_LEVEL_STACK(DBG); \ ld r1,PACA_DBG_STACK(r13); \ subi r1,r1,SPECIAL_EXC_FRAME_SIZE; + BOOK3E_STORE_EXC_LEVEL_THEAD_INFO(DBG); #define SPRN_DBG_SRR0 SPRN_DSRR0 #define SPRN_DBG_SRR1 SPRN_DSRR1
@@ -109,6 +128,7 @@ BOOK3E_LOAD_EXC_LEVEL_STACK(MC); \ ld r1,PACA_MC_STACK(r13); \ subi r1,r1,SPECIAL_EXC_FRAME_SIZE; + BOOK3E_STORE_EXC_LEVEL_THEAD_INFO(MC); #define SPRN_MC_SRR0 SPRN_MCSRR0 #define SPRN_MC_SRR1 SPRN_MCSRR1
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