From 98e298329e7b391293da5097817437292c842dc9 Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Fri, 17 Jul 2015 05:24:49 +0300 Subject: [PATCH] xtensa: don't touch EXC_TABLE_FIXUP in _switch_to 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 --- 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 3d9d221..5703bc1 100644 --- a/arch/xtensa/kernel/entry.S +++ b/arch/xtensa/kernel/entry.S @@ -1868,9 +1868,7 @@ 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 */ @@ -1891,9 +1889,7 @@ 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' */ -- 2.7.4