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Date: Wed, 6 Jan 2021 19:13:03 -0700 From: Jens Axboe <axboe@...nel.dk> To: Vineet Gupta <Vineet.Gupta1@...opsys.com>, linux-snps-arc@...ts.infradead.org Cc: linux-kernel@...r.kernel.org Subject: Re: [PATCH] ARC: unbork 5.11 bootup: fix snafu in _TIF_NOTIFY_SIGNAL handling On 1/6/21 5:12 PM, Vineet Gupta wrote: > Linux 5.11.rcX was failing to boot on ARC HSDK board. Turns out we have > a couple of issues, this being the first one, and I'm to blame as I > didn't pay attention during review. > > TIF_NOTIFY_SIGNAL support requires checking multiple TIF_* bits in > kernel return code path. Old code only needed to check a single bit so > BBIT0 <TIF_SIGPENDING> worked. New code needs to check multiple bits so > AND <bit-mask> instruction. So needs to use bit mask variant _TIF_SIGPENDING Sorry about that, my arc asm isn't that strong :-) Thanks for fixing it. -- Jens Axboe
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