Merge branch 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...

[~andy/linux] / arch / powerpc / kernel / head_64.S

diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S
index 9258074880221d48af37c37d1e8db69b3e378b47..bed9a29ee383a067ba6e2a37a1b74385e746ad13 100644 (file)
--- a/arch/powerpc/kernel/head_64.S
+++ b/arch/powerpc/kernel/head_64.S
@@ -219,7 +219,8 @@ generic_secondary_common_init:
         * physical cpu id in r24, we need to search the pacas to find
         * which logical id maps to our physical one.
         */
-       LOAD_REG_ADDR(r13, paca)        /* Get base vaddr of paca array  */
+       LOAD_REG_ADDR(r13, paca)        /* Load paca pointer             */
+       ld      r13,0(r13)              /* Get base vaddr of paca array  */
        li      r5,0                    /* logical cpu id                */
 1:     lhz     r6,PACAHWCPUID(r13)     /* Load HW procid from paca      */
        cmpw    r6,r24                  /* Compare to our id             */
@@ -536,7 +537,8 @@ _GLOBAL(pmac_secondary_start)
        mtmsrd  r3                      /* RI on */
 
        /* Set up a paca value for this processor. */
-       LOAD_REG_ADDR(r4,paca)          /* Get base vaddr of paca array */
+       LOAD_REG_ADDR(r4,paca)          /* Load paca pointer            */
+       ld      r4,0(r4)                /* Get base vaddr of paca array */
        mulli   r13,r24,PACA_SIZE       /* Calculate vaddr of right paca */
        add     r13,r13,r4              /* for this processor.          */
        mtspr   SPRN_SPRG_PACA,r13      /* Save vaddr of paca in an SPRG*/
@@ -615,6 +617,17 @@ _GLOBAL(start_secondary_prolog)
        std     r3,0(r1)                /* Zero the stack frame pointer */
        bl      .start_secondary
        b       .
+/*
+ * Reset stack pointer and call start_secondary
+ * to continue with online operation when woken up
+ * from cede in cpu offline.
+ */
+_GLOBAL(start_secondary_resume)
+       ld      r1,PACAKSAVE(r13)       /* Reload kernel stack pointer */
+       li      r3,0
+       std     r3,0(r1)                /* Zero the stack frame pointer */
+       bl      .start_secondary
+       b       .
 #endif
 
 /*