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| author | Lucas Stach <l.stach@pengutronix.de> | 2015-08-25 13:52:09 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2015-09-22 08:13:56 +0100 |
| commit | bbeb9209515989ff47802d4e5d5702178c8e42c4 (patch) | |
| tree | 120dfe828f6ac8ea5a7728d37c8a0814102359e3 /arch/arm/mm/mmu.c | |
| parent | 1f93e4a96c9109378204c147b3eec0d0e8100fde (diff) | |
| download | linux-bbeb9209515989ff47802d4e5d5702178c8e42c4.tar.gz linux-bbeb9209515989ff47802d4e5d5702178c8e42c4.tar.bz2 linux-bbeb9209515989ff47802d4e5d5702178c8e42c4.zip | |
ARM: 8422/1: enable imprecise aborts during early kernel startup
This patch adds imprecise abort enable/disable macros and uses them to
enable imprecise aborts early when starting the kernel.
This helps in tracking down the real cause for such imprecise abort, as
they are handled as soon as they occur. Until now those aborts would
only be enabled when entering the userspace and as a consequence crash
the first userspace process if any abort had been raised during kernel
startup.
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mm/mmu.c')
| -rw-r--r-- | arch/arm/mm/mmu.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c index 7cd15143a507..f65a6f344b6d 100644 --- a/arch/arm/mm/mmu.c +++ b/arch/arm/mm/mmu.c @@ -1363,6 +1363,9 @@ static void __init devicemaps_init(const struct machine_desc *mdesc) */ local_flush_tlb_all(); flush_cache_all(); + + /* Enable asynchronous aborts */ + local_abt_enable(); } static void __init kmap_init(void) |