From: Anton Blanchard Date: Sun, 15 Dec 2013 23:47:54 +0000 (+1100) Subject: powerpc: Fix endian issues in power7/8 machine check handler X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=a68c33f3592eef63304a5f5ab68466539ccac56c;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git powerpc: Fix endian issues in power7/8 machine check handler 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 Signed-off-by: Benjamin Herrenschmidt --- diff --git a/arch/powerpc/kernel/mce_power.c b/arch/powerpc/kernel/mce_power.c index b36e777a734f..27c93f41166f 100644 --- a/arch/powerpc/kernel/mce_power.c +++ b/arch/powerpc/kernel/mce_power.c @@ -50,12 +50,12 @@ static void flush_and_reload_slb(void) if (!slb) 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 */ for (i = 0; i < n; i++) { - unsigned long rb = slb->save_area[i].esid; - unsigned long rs = slb->save_area[i].vsid; + unsigned long rb = be64_to_cpu(slb->save_area[i].esid); + unsigned long rs = be64_to_cpu(slb->save_area[i].vsid); rb = (rb & ~0xFFFul) | i; asm volatile("slbmte %0,%1" : : "r" (rs), "r" (rb));