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| author | Eugeniy Paltsev <eugeniy.paltsev@synopsys.com> | 2019-01-30 19:32:41 +0300 |
|---|---|---|
| committer | Vineet Gupta <vgupta@synopsys.com> | 2019-02-25 12:10:58 -0800 |
| commit | 76551468833cd5c356b1d9ff4bc9393fcf768a59 (patch) | |
| tree | 8e2552cc13389bc3c90c916b0342bfac7f3a90b1 /arch/arc/kernel/intc-arcv2.c | |
| parent | 4d1e7918aae59ef504f5170a4f0c7ae82339fcb2 (diff) | |
| download | linux-76551468833cd5c356b1d9ff4bc9393fcf768a59.tar.bz2 | |
ARCv2: Add explcit unaligned access support (and ability to disable too)
As of today we enable unaligned access unconditionally on ARCv2.
Do this under a Kconfig option to allow disable it for test, benchmarking
etc. Also while at it
- Select HAVE_EFFICIENT_UNALIGNED_ACCESS
- Although gcc defaults to unaligned access (since GNU 2018.03), add the
right toggles for enabling or disabling as appropriate
- update bootlog to prints both HW feature status (exists, enabled/disabled)
and SW status (used / not used).
- wire up the relaxed memcpy for unaligned access
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
[vgupta: squashed patches, handle gcc -mno-unaligned-access quick]
Diffstat (limited to 'arch/arc/kernel/intc-arcv2.c')
| -rw-r--r-- | arch/arc/kernel/intc-arcv2.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arc/kernel/intc-arcv2.c b/arch/arc/kernel/intc-arcv2.c index cf18b3e5a934..c0d0124de089 100644 --- a/arch/arc/kernel/intc-arcv2.c +++ b/arch/arc/kernel/intc-arcv2.c @@ -95,7 +95,7 @@ void arc_init_IRQ(void) /* setup status32, don't enable intr yet as kernel doesn't want */ tmp = read_aux_reg(ARC_REG_STATUS32); - tmp |= STATUS_AD_MASK | (ARCV2_IRQ_DEF_PRIO << 1); + tmp |= ARCV2_IRQ_DEF_PRIO << 1; tmp &= ~STATUS_IE_MASK; asm volatile("kflag %0 \n"::"r"(tmp)); } |