From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-3.4 required=5.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED, RCVD_IN_MSPIKE_H3,RCVD_IN_MSPIKE_WL,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 26347 invoked from network); 11 Apr 2022 08:03:46 -0000 Received: from mother.openwall.net (195.42.179.200) by inbox.vuxu.org with ESMTPUTF8; 11 Apr 2022 08:03:46 -0000 Received: (qmail 13597 invoked by uid 550); 11 Apr 2022 08:03:44 -0000 Mailing-List: contact musl-help@lists.openwall.com; run by ezmlm Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-ID: Reply-To: musl@lists.openwall.com Received: (qmail 13559 invoked from network); 11 Apr 2022 08:03:43 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1649664210; bh=PXEzrENA9/xFtzZa6kI3QAfbx4GM5+z5MCw3MZ+kNmg=; h=References:In-Reply-To:From:Date:Subject:To:Cc:From; b=uCeQ8+3MctWd5/2K5iCNNHYUF5VysJAZue+MoBQidEvMGsg1TA0K++8vWKnftcLcF JF36Z7g8MZrPUD89SBUd3NU3rw04nCOqRcC8gAdOLYxerVzzKB6mj90y8Uh/HTrE3R MKGXht8b7ZHHN59LwJ7oHUhAcwelrTLG1Ih/QfItagSHztz5ZXy+mcBE2c7Wzzy6Ur Oy+UXMT5f/Qu76wbwV3jhyc+EkPti6mtMWZfpPf1DQ9ymsyiPKOcQWJmSc/eTY1Vqe ka9EZpRbZHy92JAqKnEX/Z0zyBCNKBkkmqcZHYBrQkrM48kd4o2e+Z+0Wi4loY9w+u B2lScHPF2TBFA== X-Gm-Message-State: AOAM5310tW3fWsCXGs5nZsYipepWgjE7OXDjnwfoLm0WUXKXm70ig50A hzz+fpRH7VcTnRXxGTDzFsiUiN9OSKYfiIXhoSE= X-Google-Smtp-Source: ABdhPJy/kJT6N5RgwfBdoFC039sTh8/YJCyGH8KyGlxBcrAk9DcWkK1koDGdw+CcWe3tojB6sK4RLdBCaNcu6WbQ2UE= X-Received: by 2002:a5d:6983:0:b0:207:a226:df4b with SMTP id g3-20020a5d6983000000b00207a226df4bmr6300065wru.192.1649664209115; Mon, 11 Apr 2022 01:03:29 -0700 (PDT) MIME-Version: 1.0 References: <1fec7c01-ea91-aa7c-d6d5-474c00d9347c@loongson.cn> <20220406160042.GB8499@voyager> <8dfcd620-4143-7450-8429-a89ed2264620@loongson.cn> <20220409131939.GK7074@brightrain.aerifal.cx> <20220409133044.GL7074@brightrain.aerifal.cx> <20220410152636.GM7074@brightrain.aerifal.cx> In-Reply-To: <20220410152636.GM7074@brightrain.aerifal.cx> From: Arnd Bergmann Date: Mon, 11 Apr 2022 10:03:13 +0200 X-Gmail-Original-Message-ID: Message-ID: To: musl@lists.openwall.com Cc: Christian Brauner Content-Type: text/plain; charset="UTF-8" Subject: Re: [musl] Re: add loongarch64 port On Sun, Apr 10, 2022 at 5:27 PM Rich Felker wrote: > > On Sun, Apr 10, 2022 at 12:30:59PM +0200, Arnd Bergmann wrote: > > On Sat, Apr 9, 2022 at 3:31 PM Rich Felker wrote: > > > > > > Actually, if there aren't yet archs lacking SYS_clone, this API > > > regression may be a good argument not to drop SYS_clone on new archs > > > yet until there's a way for new archs to get the same behavior > > > (unspecified stack size). > > > > That is a good point, but it also appears that the behavior of > > clone3() is unintentional > > here, I'm fairly sure it was meant to be a drop-in replacement for clone() with > > additional features. > > > > Not sure what the best fix for this is, as the check for size==0 was clearly > > intentional, but seems to prevent this from working. A special flag to ignore > > the size, or a magic size value like -1ull might work, but neither of them > > is a great interface. > > Are there archs already affected, or will this one be the first? We have not added any other architectures since clone3 got added, so this is the first one. Arnd