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Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jb2ie-0001P3-UI; Tue, 19 May 2020 13:55:44 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jb2ib-0001OV-Dw for linux-arm-kernel@lists.infradead.org; Tue, 19 May 2020 13:55:42 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 5042431B; Tue, 19 May 2020 06:55:40 -0700 (PDT) Received: from arm.com (usa-sjc-imap-foss1.foss.arm.com [10.121.207.14]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 6BE6E3F52E; Tue, 19 May 2020 06:55:39 -0700 (PDT) Date: Tue, 19 May 2020 14:55:37 +0100 From: Dave Martin To: Will Deacon Subject: Re: [PATCH 3/3] arm64: vdso: Fix CFI directives in sigreturn trampoline Message-ID: <20200519135537.GG5031@arm.com> References: <20200519121818.14511-1-will@kernel.org> <20200519121818.14511-4-will@kernel.org> <20200519130930.GO10636@e103592.cambridge.arm.com> <20200519133941.GB14570@willie-the-truck> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20200519133941.GB14570@willie-the-truck> User-Agent: Mutt/1.5.23 (2014-03-12) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200519_065541_554744_84CEFD64 X-CRM114-Status: GOOD ( 27.73 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Tamas Zsoldos , Mark Brown , "kernel-team@android.com" , "linux-arm-kernel@lists.infradead.org" , Daniel Kiss Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org T24gVHVlLCBNYXkgMTksIDIwMjAgYXQgMDI6Mzk6NDFQTSArMDEwMCwgV2lsbCBEZWFjb24gd3Jv dGU6Cj4gT24gVHVlLCBNYXkgMTksIDIwMjAgYXQgMDI6MDk6MzFQTSArMDEwMCwgRGF2ZSBQIE1h cnRpbiB3cm90ZToKPiA+IE9uIFR1ZSwgTWF5IDE5LCAyMDIwIGF0IDAxOjE4OjE4UE0gKzAxMDAs IFdpbGwgRGVhY29uIHdyb3RlOgo+ID4gPiBEYW5pZWwgcmVwb3J0cyB0aGF0IHRoZSAuY2ZpX3N0 YXJ0cHJvYyBpcyBtaXNwbGFjZWQgZm9yIHRoZSBzaWdyZXR1cm4KPiA+ID4gdHJhbXBvbGluZSwg d2hpY2ggY2F1c2VzIExMVk0ncyB1bndpbmRlciB0byBtaXNiZWhhdmU6Cj4gPiA+IAo+ID4gPiAg IHwgSSBydW4gaW50byB0aGlzIHdpdGggTExWTeKAmXMgdW53aW5kZXIuCj4gPiA+ICAgfCBUaGlz IGNvbWJpbmF0aW9uIHdhcyBhbHdheXMgYnJva2VuLgo+ID4gPiAKPiA+ID4gVGhpcyBwcm9tcHRl ZCBEYXZlIHRvIHJlYWxpc2UgdGhhdCBvdXIgQ0ZJIGRpcmVjdGl2ZXMgYXJlIGNvbnRyYWRpY3Rv cnksCj4gPiA+IGFzIHdlIHNwZWNpZnkgYm90aCAuY2ZpX3NpZ25hbF9mcmFtZSAqYW5kKiAuY2Zp X2RlZl9jZmEsIHdpdGggdGhlIGxhdHRlcgo+ID4gPiB1bmNvbmRpdGlvbmFsbHkgaWRlbnRpZnlp bmcgdGhlIGludGVycnVwdGVkIGNvbnRleHQgYXMgb3Bwb3NlZCB0byB0aGUKPiA+ID4gdmFsdWVz IGluIHRoZSBzaWdjb250ZXh0Lgo+ID4gPiAKPiA+ID4gUmV3b3JrIHRoZSBDRkkgZGlyZWN0aXZl cyBzbyB0aGF0IHdlIG9ubHkgdXNlIC5jZmlfc2lnbmFsX2ZyYW1lLCBhbmQKPiA+ID4gaW5jbHVk ZSB0aGUgIm15c3RlcmlvdXMgTk9QIiBhcyBwYXJ0IG9mIHRoZSAuY2ZpX3tzdGFydCxlbmR9cHJv YyBibG9jay4KPiA+ID4gCj4gPiA+IENjOiBUYW1hcyBac29sZG9zIDx0YW1hcy56c29sZG9zQGFy bS5jb20+Cj4gPiA+IFJlcG9ydGVkLWJ5OiBEYXZlIE1hcnRpbiA8ZGF2ZS5tYXJ0aW5AYXJtLmNv bT4KPiA+ID4gUmVwb3J0ZWQtYnk6IERhbmllbCBLaXNzIDxkYW5pZWwua2lzc0Bhcm0uY29tPgo+ ID4gPiBTaWduZWQtb2ZmLWJ5OiBXaWxsIERlYWNvbiA8d2lsbEBrZXJuZWwub3JnPgo+ID4gPiAt LS0KPiA+ID4gIGFyY2gvYXJtNjQva2VybmVsL3Zkc28vc2lncmV0dXJuLlMgfCA4ICsrKy0tLS0t Cj4gPiA+ICAxIGZpbGUgY2hhbmdlZCwgMyBpbnNlcnRpb25zKCspLCA1IGRlbGV0aW9ucygtKQo+ ID4gPiAKPiA+ID4gZGlmZiAtLWdpdCBhL2FyY2gvYXJtNjQva2VybmVsL3Zkc28vc2lncmV0dXJu LlMgYi9hcmNoL2FybTY0L2tlcm5lbC92ZHNvL3NpZ3JldHVybi5TCj4gPiA+IGluZGV4IDc4NTNm YTk2OTJmNi4uMjhiMzNmN2QwNjA0IDEwMDY0NAo+ID4gPiAtLS0gYS9hcmNoL2FybTY0L2tlcm5l bC92ZHNvL3NpZ3JldHVybi5TCj4gPiA+ICsrKyBiL2FyY2gvYXJtNjQva2VybmVsL3Zkc28vc2ln cmV0dXJuLlMKPiA+ID4gQEAgLTE0LDYgKzE0LDkgQEAKPiA+ID4gIAo+ID4gPiAgCS50ZXh0Cj4g PiA+ICAKPiA+ID4gKy8qIEVuc3VyZSB0aGF0IHRoZSBteXN0ZXJpb3VzIE5PUCBjYW4gYmUgYXNz b2NpYXRlZCB3aXRoIGEgZnVuY3Rpb24uICovCj4gPiA+ICsJLmNmaV9zdGFydHByb2MKPiA+ID4g KwkuY2ZpX3NpZ25hbF9mcmFtZQo+ID4gPiAgLyoKPiA+ID4gICAqIFRoaXMgbXlzdGVyaW91cyBO T1AgaXMgcmVxdWlyZWQgZm9yIHNvbWUgdW53aW5kZXJzIHRoYXQgc3VidHJhY3Qgb25lIGZyb20K PiA+ID4gICAqIHRoZSByZXR1cm4gYWRkcmVzcyBpbiBvcmRlciB0byBpZGVudGlmeSB0aGUgY2Fs bGluZyBmdW5jdGlvbi4KPiA+ID4gQEAgLTI4LDExICszMSw2IEBACj4gPiA+ICAgKiBpcyBwZXJm ZWN0bHkgZmluZS4KPiA+ID4gICAqLwo+ID4gPiAgU1lNX1NUQVJUKF9fa2VybmVsX3J0X3NpZ3Jl dHVybiwgU1lNX0xfR0xPQkFMLCBTWU1fQV9BTElHTikKPiA+ID4gLQkuY2ZpX3N0YXJ0cHJvYwo+ ID4gPiAtCS5jZmlfc2lnbmFsX2ZyYW1lCj4gPiA+IC0JLmNmaV9kZWZfY2ZhCXgyOSwgMAo+ID4g PiAtCS5jZmlfb2Zmc2V0CXgyOSwgMCAqIDgKPiA+ID4gLQkuY2ZpX29mZnNldAl4MzAsIDEgKiA4 Cj4gPiAKPiA+IEhhdmluZyB0aG91Z2h0IGFib3V0IHRoaXMgYWdhaW4sIEkgdGhpbmsgaXQgbWln aHQgYmUgYmV0dGVyIHRvIHN0aWNrIHRvCj4gPiB0aGUgb3JpZ2luYWwgdmVyc2lvbi4KPiA+IAo+ ID4gSWYgdGhlIHNpZ25hbCBoYW5kbGVyIGlzIGhhbGZ3YXkgdGhyb3VnaCBtdW5nZWluZyB0aGUg c2lnY29udGV4dCB0aGVuCj4gPiBiYWNrdHJhY2luZyB1c2luZyBzaWdjb250ZXh0IHdvbid0IGJl IHJlbGlhYmxlLgo+IAo+IEkgc3VwcG9zZSwgYnV0IHRoZW4gd2hhdCBkb2VzIC5jZmlfc2lnbmFs X2ZyYW1lIGRvPyBJJ2xsIHNlZSBpZiBJIGNhbgo+IGZpbmQgc29tZXRoaW5nIHRoYXQgdXNlcyBp dC4gVGhlIGZyYW1lIHJlY29yZCBpcyBzdGlsbCBzaXR0aW5nIG9uIHRoZQo+IHN0YWNrLCBzbyBp dCBkb2VzIGZlZWwgcmVkdW5kYW50IHRvIHNheSBib3RoICcuY2ZpX3NpZ25hbF9mcmFtZScgYW5k Cj4gJy5jZmlfZGVmX2NmYScgKGFuZCBvdGhlciBhcmNoaXRlY3R1cmVzLCBlLmcuIHJpc2N2IGRv bid0IGRvIHRoaXMpLgo+IAo+IEJ1dCBJJ20gYWxzbyBoYXBweSB0byBwbGF5IGl0IHNhZmUgaWYg SSBjYW4gc3RpY2sgYSBjb21tZW50IGluIGhlcmUKPiBzYXlpbmcgd2hhdCBpdCBkb2VzLgo+IAo+ ID4gUGx1cywgaW4gdGhlIGFic2VuY2Ugb2YgYW55IHNwZWMgdGhhdCBzYXlzIGV4YWN0bHkgd2hh dAo+ID4gLmNmaV9zaWduYWxfZnJhbWUgbWVhbnMqLCB3ZSBwcm9iYWJseSBkb24ndCB3YW50IHRv IHJvY2sgdGhlIGJvYXQuCj4gCj4gVGhlIGdhcyBkb2NzIHNheToKPiAKPiAJIk1hcmsgY3VycmVu dCBmdW5jdGlvbiBhcyBzaWduYWwgdHJhbXBvbGluZS4iCj4gCj4gd2hpY2ggaXMgcmVhbGx5IGlu Zm9ybWF0aXZlLgoKV2VsbCwgd2UndmUgZGVtb25zdHJhdGVkIHRoYXQgaWRlbnRpZnlpbmcgdGhl IHNpZ25hbCBmcmFtZSBpcyBhIGdyb3NzCmJvZGdlLiAgVGhlIGNmaSBhbm5vdGF0aW9uIHNob3Vs ZCBwcm92aWRlIGEgcmVsaWFibGUgd2F5IHRvIGlkZW50aWZ5IHRoZQpzaWduYWwgZnJhbWUsIGJ1 dCBJIGd1ZXNzIGl0IHdhcyB0b28gcG9vcmx5IHNwZWNpZmllZCBvciBjYW1lIHRvbyBsYXRlCnRv IHByZXZlbnQgdGhlIGJvZGdlcyBmcm9tIHNwcmVhZGluZy4KClNpbmNlIHRoaXMgc2VlbXMgdG8g YmUgYSBub25zdGFuZGFyZCBpbnZlbnRpb24sIEkgd291bGRuJ3QgaG9sZCBvdXQKbXVjaCBob3Bl IG9mIGZpbmRpbmcgYSB1c2FibGUgc3BlYy4KCk9mIGNvdXJzZSwgc29tZXRoaW5nIG1pZ2h0IGJl IHVzaW5nIGl0IG5vdywgc28gSSBndWVzcyB3ZSBoYXZlIHRvIGxlYXZlCml0LgoKLS0tRGF2ZQoK X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KbGludXgtYXJt LWtlcm5lbCBtYWlsaW5nIGxpc3QKbGludXgtYXJtLWtlcm5lbEBsaXN0cy5pbmZyYWRlYWQub3Jn Cmh0dHA6Ly9saXN0cy5pbmZyYWRlYWQub3JnL21haWxtYW4vbGlzdGluZm8vbGludXgtYXJtLWtl cm5lbAo=