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| author | Vineet Gupta <vgupta@synopsys.com> | 2019-03-05 09:16:29 -0800 |
|---|---|---|
| committer | Vineet Gupta <vgupta@synopsys.com> | 2019-03-05 09:16:33 -0800 |
| commit | 6dd356d8fc0641a8f0afb6ba457fb9351eea5076 (patch) | |
| tree | bf73566b623c1b95a60f50aced06071ac4ee05c2 /arch/arc | |
| parent | 85d6adcbbe6dfc557755543c6c39b497d3032cdc (diff) | |
| download | linux-rt-6dd356d8fc0641a8f0afb6ba457fb9351eea5076.tar.gz | |
ARC: unaligned: relax the check for gcc supporting -mno-unaligned-access
Without bleeding edge gcc, kernel builds were tripping everywhere.
So current gcc will generate unaligned code despite
!CONFIG_ARC_USE_UNALIGNED_MEM_ACCESS but that is something we have to
live with.
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Diffstat (limited to 'arch/arc')
| -rw-r--r-- | arch/arc/kernel/setup.c | 12 |
1 files changed, 0 insertions, 12 deletions
diff --git a/arch/arc/kernel/setup.c b/arch/arc/kernel/setup.c index 15da43d2e416..a9c88b7e9182 100644 --- a/arch/arc/kernel/setup.c +++ b/arch/arc/kernel/setup.c @@ -314,18 +314,6 @@ static char *arc_cpu_mumbojumbo(int cpu_id, char *buf, int len) IS_AVAIL1(cpu->extn_mpy.ver, mpy_opt), IS_AVAIL1(cpu->isa.div_rem, "div_rem ")); - -#if defined(__ARC_UNALIGNED__) && !defined(CONFIG_ARC_USE_UNALIGNED_MEM_ACCESS) - /* - * gcc 7.3.1 (GNU 2018.03) onwards generate unaligned access by default - * but -mno-unaligned-access to disable that didn't work until gcc 8.2.1 - * (GNU 2019.03). So landing here implies the interim period, when - * despite Kconfig being off, gcc is generating unaligned accesses which - * could bomb later on. So better to disallow such broken builds - */ - BUILD_BUG_ON_MSG(1, "gcc doesn't support -mno-unaligned-access"); -#endif - if (cpu->bpu.ver) { n += scnprintf(buf + n, len - n, "BPU\t\t: %s%s match, cache:%d, Predict Table:%d Return stk: %d", |