From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: ACJfBosyl43PElUspMsLfT5PBplYRwy2ZY/P/6k1VX5QLyEsMA0jkyWU4PmAQfz2tmPIRd8oMG93 ARC-Seal: i=1; a=rsa-sha256; t=1516277198; cv=none; d=google.com; s=arc-20160816; b=ug0Hr4zNHhip9uhM+Y+P9dKM+okpilpGuxU1DHLNY8UBnIy7GmvhrppHYj6WNVT3LR riDGOHaT5GBBREt33TqxtKdXdn0pp6WDjZ3K3yOpciHilIf1b5BdnV0jy+PvDoExzElu 2q09QckyOQQP6eBGTiJy+66DdmDchU9yVlIqsPvz5fDX4NISgzZGHG1Lsic1/ZMavc3q hG16DiflUwcZzfPuND4cwS3kAfNFBkmyChrL0HEWBUXpJPOTUjClsmKyfziQhzh5J54+ LdAU+H/BFc7I0kOsP8YU20gqSdOzS+v83tTmUVOWiUAk4ah20oc98R/B9siLvPQIbrP6 PPEA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=mime-version:accept-language:in-reply-to:references:message-id:date :thread-index:thread-topic:subject:cc:to:from:mime-version :dkim-signature:arc-authentication-results; bh=oFzkE8Y3USZRqJUF6ytxYTfy5UQCocDFNIM4spUSCz8=; b=H61rvQydmb5SPsMdGkqzoesxKvhLlTsTm989apVC94JLA5OT/8gLtPFF0y/99aJLKe bC20nMkWb7Tn9JdCcBlPvno9cIkkxoNqp6I+j91hgxV+amfNv+NWQEZiioM6GvrYUoHp 0LGyUcAwx9sVWjG48lwVEkjHaZvP0g580Mm5ufIofS1czjGCQX2+VJLpJprMzDXn2alv Fd4NTlsJ+4EvPutwAkKWAtdeXz+MQa+Uv/CtcWuBtYif3dU69CYfOvCfRDF9QEoNjdGE o8okypPQ+k1NUA3wUSu/ydYaO/Wqw6+/N0M0DlIeaoUfbhMrTz/1hir+IEJdnf0OeQf7 FmLA== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@amazon.co.uk header.s=amazon201209 header.b=DUvnXYE7; spf=pass (google.com: domain of prvs=549141d37=dwmw@amazon.co.uk designates 207.171.190.10 as permitted sender) smtp.mailfrom=prvs=549141d37=dwmw@amazon.co.uk; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=amazon.co.uk Authentication-Results: mx.google.com; dkim=pass header.i=@amazon.co.uk header.s=amazon201209 header.b=DUvnXYE7; spf=pass (google.com: domain of prvs=549141d37=dwmw@amazon.co.uk designates 207.171.190.10 as permitted sender) smtp.mailfrom=prvs=549141d37=dwmw@amazon.co.uk; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=amazon.co.uk X-Amazon-filename: smime.p7s X-IronPort-AV: E=Sophos;i="5.46,377,1511827200"; d="p7s'?scan'208";a="716083874" Content-Type: multipart/mixed; boundary="===============9024264972719395775==" MIME-Version: 1.0 From: "Woodhouse, David" To: "mingo@kernel.org" , "mhiramat@kernel.org" CC: "linux-kernel@vger.kernel.org" , "peterz@infradead.org" , "arjan@linux.intel.com" , "tglx@linutronix.de" , "ak@linux.intel.com" , "hpa@zytor.com" , "ananth@linux.vnet.ibm.com" , "gregkh@linux-foundation.org" Subject: Re: [PATCH v1 tip/master 1/3] retpoline: Introduce start/end markers of indirect thunk Thread-Topic: [PATCH v1 tip/master 1/3] retpoline: Introduce start/end markers of indirect thunk Thread-Index: AQHTkFQeFC7bCJ1glE+rm0u4GBY3dqN5iMwA Date: Thu, 18 Jan 2018 12:06:10 +0000 Message-ID: <1516277170.4937.121.camel@amazon.co.uk> References: <151627684798.24682.2979775081582774869.stgit@devbox> <151627687913.24682.16564356005083781238.stgit@devbox> In-Reply-To: <151627687913.24682.16564356005083781238.stgit@devbox> Accept-Language: en-GB, en-US X-MS-Has-Attach: yes X-MS-TNEF-Correlator: x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.43.61.91] MIME-Version: 1.0 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: =?utf-8?q?1589931570462984334?= X-GMAIL-MSGID: =?utf-8?q?1589931878556046687?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: --===============9024264972719395775== Content-Language: en-US Content-Type: multipart/signed; micalg=sha-256; protocol="application/x-pkcs7-signature"; boundary="=-omdRuU+y18xjg7QT/T2k" --=-omdRuU+y18xjg7QT/T2k Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Thu, 2018-01-18 at 21:01 +0900, Masami Hiramatsu wrote: >=20 > +#define X86_INDIRECT_THUNK(reg)=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0\ > +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0*(.text.__x86.indirect_thunk.##reg) Note that we don't actually care about those being in their own section, named after the register. That was just a hangover from the initial GCC COMDAT implementation. If it makes your life easier just to put them all in a single section, go ahead. --=-omdRuU+y18xjg7QT/T2k Content-Type: application/x-pkcs7-signature; name="smime.p7s" Content-Disposition: attachment; filename="smime.p7s" Content-Transfer-Encoding: base64 MIAGCSqGSIb3DQEHAqCAMIACAQExDzANBglghkgBZQMEAgEFADCABgkqhkiG9w0BBwEAAKCCEE4w ggUuMIIEFqADAgECAhEApEtL31g6H7ROXdOiQnA9RjANBgkqhkiG9w0BAQsFADCBlzELMAkGA1UE BhMCR0IxGzAZBgNVBAgTEkdyZWF0ZXIgTWFuY2hlc3RlcjEQMA4GA1UEBxMHU2FsZm9yZDEaMBgG A1UEChMRQ09NT0RPIENBIExpbWl0ZWQxPTA7BgNVBAMTNENPTU9ETyBSU0EgQ2xpZW50IEF1dGhl bnRpY2F0aW9uIGFuZCBTZWN1cmUgRW1haWwgQ0EwHhcNMTcxMjIxMDAwMDAwWhcNMTgxMjIxMjM1 OTU5WjAiMSAwHgYJKoZIhvcNAQkBFhFkd213QGFtYXpvbi5jby51azCCASIwDQYJKoZIhvcNAQEB BQADggEPADCCAQoCggEBAKdGKgXuwKMg2r+i/4BZZC0ddRxNq3xIKTakie/VCSzoO7P17A36ZzUc VMEYPfqDt/65xoc6Tdih+qkY2pNDppZ1DZ8mVrAX6O2O60ZhmXB60wMoDvXPZInvkMOW4drqnje/ 7/NOypn/XQAY+ln4KT+3tHG3TfryyJFMedqC/r29KJlCeeCxIzdtq2j5mN42tvPVv4+p+Kr77uui 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