Jisheng Zhang 509ae27a18 arm64: kprobes: Restore local irqflag if kprobes is cancelled ... [ Upstream commit 738fa58ee1 ] If instruction being single stepped caused a page fault, the kprobes is cancelled to let the page fault handler continue as a normal page fault. But the local irqflags are disabled so cpu will restore pstate with DAIF masked. After pagefault is serviced, the kprobes is triggerred again, we overwrite the saved_irqflag by calling kprobes_save_local_irqflag(). NOTE, DAIF is masked in this new saved irqflag. After kprobes is serviced, the cpu pstate is retored with DAIF masked. This patch is inspired by one patch for riscv from Liao Chang. Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com> Acked-by: Masami Hiramatsu <mhiramat@kernel.org> Link: https://lore.kernel.org/r/20210412174101.6bfb0594@xhacker.debian Signed-off-by: Will Deacon <will@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2021-04-28 13:40:02 +02:00
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decode-insn.c	arm64: kprobe: clarify the comment of steppable hint instructions	2020-09-14 12:07:03 +01:00
decode-insn.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174	2019-05-30 11:26:41 -07:00
kprobes.c	arm64: kprobes: Restore local irqflag if kprobes is cancelled	2021-04-28 13:40:02 +02:00
kprobes_trampoline.S	arm64: kernel: Convert to modern annotations for assembly functions	2020-05-04 12:46:03 +01:00
Makefile	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
simulate-insn.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174	2019-05-30 11:26:41 -07:00
simulate-insn.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174	2019-05-30 11:26:41 -07:00
uprobes.c	arm64: uprobe: Return EOPNOTSUPP for AARCH32 instruction probing	2021-03-04 11:38:36 +01:00