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    Subject[v6][PATCH 2/5] powerpc/book3e: store crit/mc/dbg exception thread info
    Date
    We need to store thread info to these exception thread info like something
    we already did for PPC32.

    Signed-off-by: Tiejun Chen <tiejun.chen@windriver.com>
    ---
    arch/powerpc/kernel/exceptions-64e.S | 22 +++++++++++++++++++---
    1 file changed, 19 insertions(+), 3 deletions(-)

    diff --git a/arch/powerpc/kernel/exceptions-64e.S b/arch/powerpc/kernel/exceptions-64e.S
    index 68d74b4..a55cf62 100644
    --- a/arch/powerpc/kernel/exceptions-64e.S
    +++ b/arch/powerpc/kernel/exceptions-64e.S
    @@ -36,6 +36,19 @@
    */
    #define SPECIAL_EXC_FRAME_SIZE INT_FRAME_SIZE

    +/* Now we only store something to exception thread info */
    +#define EXC_LEVEL_EXCEPTION_PROLOG(type) \
    + ld r14,PACAKSAVE(r13); \
    + CURRENT_THREAD_INFO(r14, r14); \
    + CURRENT_THREAD_INFO(r15, r1); \
    + ld r10,TI_FLAGS(r14); \
    + std r10,TI_FLAGS(r15); \
    + ld r10,TI_PREEMPT(r14); \
    + std r10,TI_PREEMPT(r15); \
    + ld r10,TI_TASK(r14); \
    + std r10,TI_TASK(r15);
    +
    +
    /* Exception prolog code for all exceptions */
    #define EXCEPTION_PROLOG(n, intnum, type, addition) \
    mtspr SPRN_SPRG_##type##_SCRATCH,r13; /* get spare registers */ \
    @@ -69,19 +82,22 @@

    #define CRIT_SET_KSTACK \
    ld r1,PACA_CRIT_STACK(r13); \
    - subi r1,r1,SPECIAL_EXC_FRAME_SIZE;
    + subi r1,r1,SPECIAL_EXC_FRAME_SIZE; \
    + EXC_LEVEL_EXCEPTION_PROLOG(CRIT);
    #define SPRN_CRIT_SRR0 SPRN_CSRR0
    #define SPRN_CRIT_SRR1 SPRN_CSRR1

    #define DBG_SET_KSTACK \
    ld r1,PACA_DBG_STACK(r13); \
    - subi r1,r1,SPECIAL_EXC_FRAME_SIZE;
    + subi r1,r1,SPECIAL_EXC_FRAME_SIZE; \
    + EXC_LEVEL_EXCEPTION_PROLOG(DBG);
    #define SPRN_DBG_SRR0 SPRN_DSRR0
    #define SPRN_DBG_SRR1 SPRN_DSRR1

    #define MC_SET_KSTACK \
    ld r1,PACA_MC_STACK(r13); \
    - subi r1,r1,SPECIAL_EXC_FRAME_SIZE;
    + subi r1,r1,SPECIAL_EXC_FRAME_SIZE; \
    + EXC_LEVEL_EXCEPTION_PROLOG(MC);
    #define SPRN_MC_SRR0 SPRN_MCSRR0
    #define SPRN_MC_SRR1 SPRN_MCSRR1

    --
    1.7.9.5


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