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[198.145.64.163]) by smtp.gmail.com with ESMTPSA id g16sm171892pgm.38.2020.10.21.20.28.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 21 Oct 2020 20:28:47 -0700 (PDT) Date: Wed, 21 Oct 2020 20:28:46 -0700 From: Kees Cook To: Dmitry Osipenko Subject: Re: [PATCH v1] ARM: vfp: Use long jump to fix THUMB2 kernel compilation error Message-ID: <202010212028.32E8A5EF9B@keescook> References: <20201021225737.739-1-digetx@gmail.com> <202010211637.7CFD8435@keescook> <773fbdb0-5fc4-ab39-e72d-89845faa4c6d@gmail.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <773fbdb0-5fc4-ab39-e72d-89845faa4c6d@gmail.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201021_232851_330627_1C4B0F78 X-CRM114-Status: GOOD ( 27.09 ) 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: Nick Desaulniers , linux-kernel@vger.kernel.org, Russell King , clang-built-linux@googlegroups.com, Ingo Molnar , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org T24gVGh1LCBPY3QgMjIsIDIwMjAgYXQgMDM6MDA6MDZBTSArMDMwMCwgRG1pdHJ5IE9zaXBlbmtv IHdyb3RlOgo+IDIyLjEwLjIwMjAgMDI6NDAsIEtlZXMgQ29vayDQv9C40YjQtdGCOgo+ID4gT24g VGh1LCBPY3QgMjIsIDIwMjAgYXQgMDE6NTc6MzdBTSArMDMwMCwgRG1pdHJ5IE9zaXBlbmtvIHdy b3RlOgo+ID4+IFRoZSB2ZnBfa21vZGVfZXhjZXB0aW9uKCkgZnVuY3Rpb24gbm93IGlzIHVucmVh Y2hhYmxlIHVzaW5nIHJlbGF0aXZlCj4gPj4gYnJhbmNoaW5nIGluIFRIVU1CMiBrZXJuZWwgY29u ZmlndXJhdGlvbiwgcmVzdWx0aW5nIGluIGEgInJlbG9jYXRpb24KPiA+PiB0cnVuY2F0ZWQgdG8g Zml0OiBSX0FSTV9USE1fSlVNUDE5IGFnYWluc3Qgc3ltYm9sIGB2ZnBfa21vZGVfZXhjZXB0aW9u JyIKPiA+PiBsaW5rZXIgZXJyb3IuIExldCdzIHVzZSBsb25nIGp1bXAgaW4gb3JkZXIgdG8gZml4 IHRoZSBpc3N1ZS4KPiA+IAo+ID4gRWVrLiBJcyB0aGlzIHdpdGggZ2NjIG9yIGNsYW5nPwo+IAo+ IEdDQyA5LjMuMAo+IAo+ID4+IEZpeGVzOiBlZmY4NzI4ZmU2OTggKCJ2bWxpbnV4Lmxkcy5oOiBB ZGQgUEdPIGFuZCBBdXRvRkRPIGlucHV0IHNlY3Rpb25zIikKPiA+IAo+ID4gQXJlIHlvdSBzdXJl IGl0IHdhc24ndCA1MTJkZDJlZWJlNTUgKCJhcm0vYnVpbGQ6IEFkZCBtaXNzaW5nIHNlY3Rpb25z IikgPwo+ID4gVGhhdCBjb21taXQgbWF5IGhhdmUgaW1wbGljaXRseSBtb3ZlZCB0aGUgbG9jYXRp b24gb2YgLnZmcDExX3ZlbmVlciwKPiA+IHRob3VnaCBJIHRob3VnaHQgSSBoYWQgY2hvc2VuIHRo ZSBjb3JyZWN0IHBvc2l0aW9uLgo+IAo+IEkgcmUtY2hlY2tlZCB0aGF0IHRoZSBmaXhlcyB0YWcg aXMgY29ycmVjdC4KPiAKPiA+PiBTaWduZWQtb2ZmLWJ5OiBEbWl0cnkgT3NpcGVua28gPGRpZ2V0 eEBnbWFpbC5jb20+Cj4gPj4gLS0tCj4gPj4gIGFyY2gvYXJtL3ZmcC92ZnBody5TIHwgMyArKy0K PiA+PiAgMSBmaWxlIGNoYW5nZWQsIDIgaW5zZXJ0aW9ucygrKSwgMSBkZWxldGlvbigtKQo+ID4+ Cj4gPj4gZGlmZiAtLWdpdCBhL2FyY2gvYXJtL3ZmcC92ZnBody5TIGIvYXJjaC9hcm0vdmZwL3Zm cGh3LlMKPiA+PiBpbmRleCA0ZmNmZjlmNTk5NDcuLjZlMmIyOWYwYzQ4ZCAxMDA2NDQKPiA+PiAt LS0gYS9hcmNoL2FybS92ZnAvdmZwaHcuUwo+ID4+ICsrKyBiL2FyY2gvYXJtL3ZmcC92ZnBody5T Cj4gPj4gQEAgLTgyLDcgKzgyLDggQEAgRU5UUlkodmZwX3N1cHBvcnRfZW50cnkpCj4gPj4gIAls ZHIJcjMsIFtzcCwgI1NfUFNSXQlAIE5laXRoZXIgbGF6eSByZXN0b3JlIG5vciBGUCBleGNlcHRp b25zCj4gPj4gIAlhbmQJcjMsIHIzLCAjTU9ERV9NQVNLCUAgYXJlIHN1cHBvcnRlZCBpbiBrZXJu ZWwgbW9kZQo+ID4+ICAJdGVxCXIzLCAjVVNSX01PREUKPiA+PiAtCWJuZQl2ZnBfa21vZGVfZXhj ZXB0aW9uCUAgUmV0dXJucyB0aHJvdWdoIGxyCj4gPj4gKwlsZHIJcjEsID12ZnBfa21vZGVfZXhj ZXB0aW9uCj4gPj4gKwlieG5lCXIxCQkJQCBSZXR1cm5zIHRocm91Z2ggbHIKPiA+PiAgCj4gPj4g IAlWRlBGTVJYCXIxLCBGUEVYQwkJQCBJcyB0aGUgVkZQIGVuYWJsZWQ/Cj4gPj4gIAlEQkdTVFIx CSJmcGV4YyAlMDh4IiwgcjEKPiA+IAo+ID4gVGhpcyBzZWVtcyBsaWtlIGEgd29ya2Fyb3VuZCB0 aG91Z2g/IEkgc3VzcGVjdCB0aGUgdmZwMTFfdmVuZWVyIG5lZWRzCj4gPiBtb3Zpbmc/Cj4gPiAK PiAKPiBJIGRvbid0IGtub3cgd2hlcmUgaXQgbmVlZHMgdG8gYmUgbW92ZWQuIFBsZWFzZSBmZWVs IGZyZWUgdG8gbWFrZSBhCj4gcGF0Y2ggaWYgeW91IGhhdmUgYSBiZXR0ZXIgaWRlYSwgSSdsbCBi ZSBnbGFkIHRvIHRlc3QgaXQuCgpJIG1pZ2h0IGhhdmUganVzdCBiZWVuIGRpc3RyYWN0ZWQgYnkg dGhlIGNvbW1vbiAidmZwIiBwcmVmaXguIEl0J3MKcG9zc2libGUgdGhhdCB0aGUgdGV4dCBzZWN0 aW9uIHNodWZmbGluZyBqdXN0IGVuZGVkIHVwIGJlaW5nIHZlcnkgbGFyZ2UsCnNvIHByb2JhYmx5 IHRoaXMgcGF0Y2ggaXMgcmlnaHQgdGhlbiEKCi0tIApLZWVzIENvb2sKCl9fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmxpbnV4LWFybS1rZXJuZWwgbWFpbGlu ZyBsaXN0CmxpbnV4LWFybS1rZXJuZWxAbGlzdHMuaW5mcmFkZWFkLm9yZwpodHRwOi8vbGlzdHMu aW5mcmFkZWFkLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2xpbnV4LWFybS1rZXJuZWwK