netdev - RE: ipv4/tcp.c:4234:1: error: the frame size of 1152 bytes is larger than 1024 bytes [-Werror=frame-larger-than=]

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Date:   Wed, 8 Sep 2021 14:51:21 +0000
From:   David Laight <David.Laight@...LAB.COM>
To:     'Wei Liu' <wei.liu@...nel.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>
CC:     Naresh Kamboju <naresh.kamboju@...aro.org>,
        Mathias Nyman <mathias.nyman@...el.com>,
        Johannes Berg <johannes@...solutions.net>,
        "Jakub Kicinski" <kuba@...nel.org>,
        Shuah Khan <skhan@...uxfoundation.org>,
        "Brendan Higgins" <brendanhiggins@...gle.com>,
        Ariel Elior <aelior@...vell.com>,
        "GR-everest-linux-l2@...vell.com" <GR-everest-linux-l2@...vell.com>,
        "Linux ARM" <linux-arm-kernel@...ts.infradead.org>,
        open list <linux-kernel@...r.kernel.org>,
        Netdev <netdev@...r.kernel.org>,
        "lkft-triage@...ts.linaro.org" <lkft-triage@...ts.linaro.org>,
        Arnd Bergmann <arnd@...db.de>,
        "David S. Miller" <davem@...emloft.net>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Nathan Chancellor <nathan@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Alexei Starovoitov <ast@...nel.org>,
        Eric Dumazet <edumazet@...gle.com>
Subject: RE: ipv4/tcp.c:4234:1: error: the frame size of 1152 bytes is larger
 than 1024 bytes [-Werror=frame-larger-than=]

From: Wei Liu
> Sent: 08 September 2021 11:03
...
> However calling into the allocator from that IPI path seems very heavy
> weight. I will discuss with fellow engineers on how to fix it properly.

Isn't the IPI code something that is likely to get called
when a lot of stack has already been used?

So you really shouldn't be using much stack at all??

	David

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