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MIPS: Print GuestCtl1 on machine check exception

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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>
This commit is contained in:
James Hogan 2016-05-11 15:50:32 +01:00 committed by Ralf Baechle
parent 382208dc8c
commit 4b62fad50e
1 changed files with 2 additions and 0 deletions
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2
arch/mips/lib/dump_tlb.c
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@ -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());