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| author | Tiejun Chen <tiejun.chen@windriver.com> | 2013-10-23 09:31:21 (GMT) |
|---|---|---|
| committer | Jose Rivera <German.Rivera@freescale.com> | 2014-03-28 13:55:12 (GMT) |
| commit | 3bc49f3459fa9652f9c282b8dbc6e9659c806792 (patch) | |
| tree | 75178348285bd31886985b93d01b03be81609ff9 | |
| parent | 0f29c61a33d2832e770d5e8b0849e4a76b58a91e (diff) | |
| download | linux-fsl-qoriq-3bc49f3459fa9652f9c282b8dbc6e9659c806792.tar.xz | |
powerpc/book3e: initialize crit/mc/dbg kernel stack pointers
We already allocated critical/machine/debug check exceptions, but
we also should initialize those associated kernel stack pointers
for use by special exceptions in the PACA.
Signed-off-by: Tiejun Chen <tiejun.chen@windriver.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>
Change-Id: Ide9ef2f6b0c1dc43041d908a923cabcd7fe5f492
Reviewed-on: http://git.am.freescale.net:8181/10260
Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com>
Reviewed-by: Bharat Bhushan <Bharat.Bhushan@freescale.com>
Reviewed-by: Jose Rivera <German.Rivera@freescale.com>
| -rw-r--r-- | arch/powerpc/kernel/setup_64.c | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c index 7705772..e8fdda0 100644 --- a/arch/powerpc/kernel/setup_64.c +++ b/arch/powerpc/kernel/setup_64.c @@ -557,14 +557,20 @@ static void __init exc_lvl_early_init(void) extern unsigned int exc_debug_debug_book3e; unsigned int i; + unsigned long sp; for_each_possible_cpu(i) { - critirq_ctx[i] = (struct thread_info *) - __va(memblock_alloc(THREAD_SIZE, THREAD_SIZE)); - dbgirq_ctx[i] = (struct thread_info *) - __va(memblock_alloc(THREAD_SIZE, THREAD_SIZE)); - mcheckirq_ctx[i] = (struct thread_info *) - __va(memblock_alloc(THREAD_SIZE, THREAD_SIZE)); + sp = memblock_alloc(THREAD_SIZE, THREAD_SIZE); + critirq_ctx[i] = (struct thread_info *)__va(sp); + paca[i].crit_kstack = __va(sp + THREAD_SIZE); + + sp = memblock_alloc(THREAD_SIZE, THREAD_SIZE); + dbgirq_ctx[i] = (struct thread_info *)__va(sp); + paca[i].dbg_kstack = __va(sp + THREAD_SIZE); + + sp = memblock_alloc(THREAD_SIZE, THREAD_SIZE); + mcheckirq_ctx[i] = (struct thread_info *)__va(sp); + paca[i].mc_kstack = __va(sp + THREAD_SIZE); } if (cpu_has_feature(CPU_FTR_DEBUG_LVL_EXC)) |