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author | Jonas Gorski <jogo@openwrt.org> | 2013-06-21 17:48:48 (GMT) |
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committer | Ralf Baechle <ralf@linux-mips.org> | 2013-06-25 15:48:06 (GMT) |
commit | a3d9086bb121a6459c9ed0452e3c58891a504785 (patch) | |
tree | 99f9d81a1781e4a563dd4a20277ec4a99a49668f /Documentation/ia64/serial.txt | |
parent | 6a72015d3c3602dd969e79510486807c481a0e1b (diff) | |
download | linux-fsl-qoriq-a3d9086bb121a6459c9ed0452e3c58891a504785.tar.xz |
MIPS: Flush TLB handlers directly after writing them
When having enabled MIPS_PGD_C0_CONTEXT, trap_init() might call the
generated tlbmiss_handler_setup_pgd before it was committed to memory,
causing boot failures:
trap_init()
|- per_cpu_trap_init()
| |- TLBMISS_HANDLER_SETUP()
| |- tlbmiss_handler_setup_pgd()
|- flush_tlb_handlers()
To avoid this, move flush_tlb_handlers() into build_tlb_refill_handler()
right after they were generated. We can do this as the cache handling is
initialized just before creating the tlb handlers.
This issue was introduced in 3d8bfdd0307223de678962f1c1907a7cec549136
("MIPS: Use C0_KScratch (if present) to hold PGD pointer.").
Signed-off-by: Jonas Gorski <jogo@openwrt.org>
Cc: linux-mips@linux-mips.org
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: Jayachandran C <jchandra@broadcom.com>
Cc: David Daney <david.daney@cavium.com>
Patchwork: https://patchwork.linux-mips.org/patch/5539/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'Documentation/ia64/serial.txt')
0 files changed, 0 insertions, 0 deletions