From: Jens Axboe <axboe@kernel.dk>
To: Vineet Gupta <Vineet.Gupta1@synopsys.com>,
linux-snps-arc@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH] ARC: unbork 5.11 bootup: fix snafu in _TIF_NOTIFY_SIGNAL handling
Date: Wed, 6 Jan 2021 19:13:03 -0700 [thread overview]
Message-ID: <0c62fbca-87e1-f53a-26e1-35244e2e6f48@kernel.dk> (raw)
In-Reply-To: <20210107001225.3063163-1-vgupta@synopsys.com>
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
prev parent reply other threads:[~2021-01-07 2:14 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-07 0:12 Vineet Gupta
2021-01-07 2:13 ` Jens Axboe [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=0c62fbca-87e1-f53a-26e1-35244e2e6f48@kernel.dk \
--to=axboe@kernel.dk \
--cc=Vineet.Gupta1@synopsys.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-snps-arc@lists.infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®