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    Subject[v2][PATCH 2/6] powerpc/book3e: store critical/machine/debug 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 | 15 +++++++++++++++
    1 file changed, 15 insertions(+)

    diff --git a/arch/powerpc/kernel/exceptions-64e.S b/arch/powerpc/kernel/exceptions-64e.S
    index 767f856..423a936 100644
    --- a/arch/powerpc/kernel/exceptions-64e.S
    +++ b/arch/powerpc/kernel/exceptions-64e.S
    @@ -58,6 +58,18 @@
    std r10,PACA_##level##_STACK(r13);
    #endif

    +/* Store something to exception thread info */
    +#define BOOK3E_STORE_EXC_LEVEL_THEAD_INFO(type) \
    + ld r1,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 */ \
    @@ -95,6 +107,7 @@
    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); \
    1:
    #define SPRN_CRIT_SRR0 SPRN_CSRR0
    #define SPRN_CRIT_SRR1 SPRN_CSRR1
    @@ -105,6 +118,7 @@
    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); \
    1:
    #define SPRN_DBG_SRR0 SPRN_DSRR0
    #define SPRN_DBG_SRR1 SPRN_DSRR1
    @@ -115,6 +129,7 @@
    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); \
    1:
    #define SPRN_MC_SRR0 SPRN_MCSRR0
    #define SPRN_MC_SRR1 SPRN_MCSRR1
    --
    1.7.9.5


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