From: James Hogan Date: Wed, 11 May 2016 14:50:32 +0000 (+0100) Subject: MIPS: Print GuestCtl1 on machine check exception X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=4b62fad50efd1cff9017d3e4dcfcf5c4b6c13193;p=openwrt%2Fstaging%2Fblogic.git 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 Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/13232/ Signed-off-by: Ralf Baechle --- 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());