From: Peter Maydell <peter.maydell@linaro.org>
To: qemu-devel@nongnu.org
Cc: Paolo Bonzini <pbonzini@redhat.com>,
Richard Henderson <richard.henderson@linaro.org>,
Eduardo Habkost <eduardo@habkost.net>
Subject: Re: [PATCH] target/i386: Remove dead assignment to ss in do_interrupt64()
Date: Mon, 29 Jul 2024 17:02:34 +0100 [thread overview]
Message-ID: <CAFEAcA9ou6z6UDaGTO_8T58bdC-LoNj2hqbu+YFLFO0pWqqJNg@mail.gmail.com> (raw)
In-Reply-To: <20240723162525.1585743-1-peter.maydell@linaro.org>
On Tue, 23 Jul 2024 at 17:25, Peter Maydell <peter.maydell@linaro.org> wrote:
>
> Coverity points out that in do_interrupt64() in the "to inner
> privilege" codepath we set "ss = 0", but because we also set
> "new_stack = 1" there, later in the function we will always override
> that value of ss with "ss = 0 | dpl".
>
> Remove the unnecessary initialization of ss, which allows us to
> reduce the scope of the variable to only where it is used. Borrow a
> comment from helper_lcall_protected() that explains what "0 | dpl"
> means here.
>
> Resolves: Coverity CID 1527395
> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
I'll take this via target-arm.next since I'm doing a pullreq
anyway, unless you'd prefer otherwise.
thanks
-- PMM
prev parent reply other threads:[~2024-07-29 16:02 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-07-23 16:25 [PATCH] target/i386: Remove dead assignment to ss in do_interrupt64() Peter Maydell
2024-07-24 0:01 ` Richard Henderson
2024-07-24 6:57 ` Philippe Mathieu-Daudé
2024-07-29 16:02 ` Peter Maydell [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=CAFEAcA9ou6z6UDaGTO_8T58bdC-LoNj2hqbu+YFLFO0pWqqJNg@mail.gmail.com \
--to=peter.maydell@linaro.org \
--cc=eduardo@habkost.net \
--cc=pbonzini@redhat.com \
--cc=qemu-devel@nongnu.org \
--cc=richard.henderson@linaro.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;
as well as URLs for NNTP newsgroup(s).