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Groups > linux.kernel > #1187415
| From | Max Filippov <jcmvbkbc@gmail.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH v2 11/13] xtensa: don't touch EXC_TABLE_FIXUP in _switch_to |
| Date | 2015-07-18 10:40 +0200 |
| Message-ID | <pNvP3-7hz-7@gated-at.bofh.it> (permalink) |
| References | <pNvP3-7hz-5@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
There's no way _switch_to can produce double exceptions now, don't enter/leave EXC_TABLE_FIXUP critical section. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> --- arch/xtensa/kernel/entry.S | 4 ---- 1 file changed, 4 deletions(-) diff --git a/arch/xtensa/kernel/entry.S b/arch/xtensa/kernel/entry.S index 5771d5c..309e71b 100644 --- a/arch/xtensa/kernel/entry.S +++ b/arch/xtensa/kernel/entry.S @@ -1883,9 +1883,7 @@ ENTRY(_switch_to) /* Disable ints while we manipulate the stack pointer. */ rsil a14, LOCKLEVEL - rsr a3, excsave1 rsync - s32i a3, a3, EXC_TABLE_FIXUP /* enter critical section */ /* Switch CPENABLE */ @@ -1906,9 +1904,7 @@ ENTRY(_switch_to) */ rsr a3, excsave1 # exc_table - movi a6, 0 addi a7, a5, PT_REGS_OFFSET - s32i a6, a3, EXC_TABLE_FIXUP s32i a7, a3, EXC_TABLE_KSTK /* restore context of the task 'next' */ -- 1.8.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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[PATCH v2 11/13] xtensa: don't touch EXC_TABLE_FIXUP in _switch_to Max Filippov <jcmvbkbc@gmail.com> - 2015-07-18 10:40 +0200
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