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powerpc: Fix endian issues in power7/8 machine check handler

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The SLB save area is shared with the hypervisor and is defined
as big endian, so we need to byte swap on little endian builds.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Anton Blanchard 2013-12-16 10:47:54 +11:00 committed by Benjamin Herrenschmidt
parent d084775738
commit a68c33f359
1 changed files with 3 additions and 3 deletions
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6
arch/powerpc/kernel/mce_power.c
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@ -50,12 +50,12 @@ static void flush_and_reload_slb(void)
if (!slb) if (!slb)
return; return;
n = min_t(u32, slb->persistent, SLB_MIN_SIZE); n = min_t(u32, be32_to_cpu(slb->persistent), SLB_MIN_SIZE);
/* Load up the SLB entries from shadow SLB */ /* Load up the SLB entries from shadow SLB */
for (i = 0; i < n; i++) { for (i = 0; i < n; i++) {
unsigned long rb = slb->save_area[i].esid; unsigned long rb = be64_to_cpu(slb->save_area[i].esid);
unsigned long rs = slb->save_area[i].vsid; unsigned long rs = be64_to_cpu(slb->save_area[i].vsid);
rb = (rb & ~0xFFFul) | i; rb = (rb & ~0xFFFul) | i;
asm volatile("slbmte %0,%1" : : "r" (rs), "r" (rb)); asm volatile("slbmte %0,%1" : : "r" (rs), "r" (rb));