diff options
| author | Nicholas Piggin <npiggin@gmail.com> | 2019-08-02 20:56:33 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2019-08-30 10:32:35 +1000 |
| commit | 7290f3b3d3e66b54720f23079ffc60e0b7bbb0cc (patch) | |
| tree | 682cb91a6401457b5d9189a4c4e291f3ad65617a /arch/powerpc/platforms/powernv | |
| parent | 0b66370c61fcf5fcc1d6901013e110284da6e2bb (diff) | |
powerpc/64s/powernv: machine check dump SLB contents
Re-use the code introduced in pseries to save and dump the contents
of the SLB in the case of an SLB involved machine check exception.
This patch also avoids allocating the SLB save array on pseries radix.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20190802105709.27696-9-npiggin@gmail.com
Diffstat (limited to 'arch/powerpc/platforms/powernv')
| -rw-r--r-- | arch/powerpc/platforms/powernv/setup.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/powernv/setup.c b/arch/powerpc/platforms/powernv/setup.c index a5e52f9eed3c..83498604d322 100644 --- a/arch/powerpc/platforms/powernv/setup.c +++ b/arch/powerpc/platforms/powernv/setup.c @@ -24,6 +24,7 @@ #include <linux/bug.h> #include <linux/pci.h> #include <linux/cpufreq.h> +#include <linux/memblock.h> #include <asm/machdep.h> #include <asm/firmware.h> @@ -166,6 +167,14 @@ static void __init pnv_init(void) else #endif add_preferred_console("hvc", 0, NULL); + + if (!radix_enabled()) { + int i; + + /* Allocate per cpu area to save old slb contents during MCE */ + for_each_possible_cpu(i) + paca_ptrs[i]->mce_faulty_slbs = memblock_alloc_node(mmu_slb_size, __alignof__(*paca_ptrs[i]->mce_faulty_slbs), cpu_to_node(i)); + } } static void __init pnv_init_IRQ(void) |