Mark Rutland f0c0d4b74d arm64: entry: unmask IRQ in el0_sp() ... Currently, the EL0 SP alignment handler masks IRQs unnecessarily. It does so due to historic code sharing of the EL0 SP and PC alignment handlers, and branch predictor hardening applicable to the EL0 SP handler. We began masking IRQs in the EL0 SP alignment handler in commit: 5dfc6ed277 ("arm64: entry: Apply BP hardening for high-priority synchronous exception") ... as this shared code with the EL0 PC alignment handler, and branch predictor hardening made it necessary to disable IRQs for early parts of the EL0 PC alignment handler. It was not necessary to mask IRQs during EL0 SP alignment exceptions, but it was not considered harmful to do so. This masking was carried forward into C code in commit: 582f95835a ("arm64: entry: convert el0_sync to C") ... where the SP/PC cases were split into separate handlers, and the masking duplicated. Subsequently the EL0 PC alignment handler was refactored to perform branch predictor hardening before unmasking IRQs, in commit: bfe298745a ("arm64: entry-common: don't touch daif before bp-hardening") ... but the redundant masking of IRQs was not removed from the EL0 SP alignment handler. Let's do so now, and make it interruptible as with most other synchronous exception handlers. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: Will Deacon <will@kernel.org> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Reviewed-by: James Morse <james.morse@arm.com>		2020-03-11 14:34:28 +00:00
..
boot	ARMv8 Juno/Fast Models fix for v5.6	2020-02-11 14:47:09 -08:00
configs	This pull request contains ARM64 defconfig changes for v5.6, please pull	2020-02-11 14:49:38 -08:00
crypto	Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6	2020-01-28 15:38:56 -08:00
include	arm64: csum: Optimise IPv6 header checksum	2020-03-09 18:08:25 +00:00
kernel	arm64: entry: unmask IRQ in el0_sp()	2020-03-11 14:34:28 +00:00
kvm	ARM: Cleanups and corner case fixes	2020-01-31 09:30:41 -08:00
lib	arm64: csum: Optimise IPv6 header checksum	2020-03-09 18:08:25 +00:00
mm	arm64: mm: convert cpu_do_switch_mm() to C	2020-02-27 14:30:50 +00:00
net
xen	arm64: xen: Use modern annotations for assembly functions	2020-01-09 16:09:42 +00:00
Kbuild
Kconfig	arm64: fix NUMA Kconfig typos	2020-02-27 13:56:14 +00:00
Kconfig.debug	arm64: mm: convert mm/dump.c to use walk_page_range()	2020-02-04 03:05:25 +00:00
Kconfig.platforms	i.MX SoC update for 5.5:	2019-11-06 07:46:42 -08:00
Makefile	arm64: Turn "broken gas inst" into real config option	2020-01-15 16:35:12 +00:00