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authorJames Hogan <james.hogan@imgtec.com>2016-05-11 15:50:32 +0100
committerRalf Baechle <ralf@linux-mips.org>2016-05-13 15:30:25 +0200
commit4b62fad50efd1cff9017d3e4dcfcf5c4b6c13193 (patch)
treeae7ebc8a3e3e6151cafb2c49cc932671f2275508 /arch/mips/lib/dump_tlb.c
parent382208dc8c856b4d8ba602031412842b121decb2 (diff)
downloadlinux-4b62fad50efd1cff9017d3e4dcfcf5c4b6c13193.tar.bz2
MIPS: Print GuestCtl1 on machine check exception
The GuestCtl1 CP0 register can contain the GuestID used for root TLB operations, which affects TLB matching. The other TLB registers are already dumped out to the log on a machine check exception due to multiple matching TLB entries, so also dump the value of the GuestCtl1 register if GuestIDs are supported. Signed-off-by: James Hogan <james.hogan@imgtec.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/13232/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/lib/dump_tlb.c')
-rw-r--r--arch/mips/lib/dump_tlb.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/mips/lib/dump_tlb.c b/arch/mips/lib/dump_tlb.c
index 2cb10dba8838..0f80b936e75e 100644
--- a/arch/mips/lib/dump_tlb.c
+++ b/arch/mips/lib/dump_tlb.c
@@ -19,6 +19,8 @@ void dump_tlb_regs(void)
pr_info("Index : %0x\n", read_c0_index());
pr_info("PageMask : %0x\n", read_c0_pagemask());
+ if (cpu_has_guestid)
+ pr_info("GuestCtl1: %0x\n", read_c0_guestctl1());
pr_info("EntryHi : %0*lx\n", field, read_c0_entryhi());
pr_info("EntryLo0 : %0*lx\n", field, read_c0_entrylo0());
pr_info("EntryLo1 : %0*lx\n", field, read_c0_entrylo1());