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[109.252.193.186]) by smtp.googlemail.com with ESMTPSA id m26sm319986lfq.296.2020.10.22.08.57.03 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 22 Oct 2020 08:57:04 -0700 (PDT) Subject: Re: [PATCH v1] ARM: vfp: Use long jump to fix THUMB2 kernel compilation error To: Ard Biesheuvel , Kees Cook References: <20201021225737.739-1-digetx@gmail.com> <202010211637.7CFD8435@keescook> <773fbdb0-5fc4-ab39-e72d-89845faa4c6d@gmail.com> <202010212028.32E8A5EF9B@keescook> From: Dmitry Osipenko Message-ID: <1d2e2b5d-3035-238c-d2ca-14c0c209a6a1@gmail.com> Date: Thu, 22 Oct 2020 18:57:03 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201022_115706_546607_9D8F267D X-CRM114-Status: GOOD ( 24.20 ) 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 Mailing List , Russell King , clang-built-linux , Ingo Molnar , Linux ARM 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 MjIuMTAuMjAyMCAxMDowNiwgQXJkIEJpZXNoZXV2ZWwg0L/QuNGI0LXRgjoKPiBPbiBUaHUsIDIy IE9jdCAyMDIwIGF0IDA1OjMwLCBLZWVzIENvb2sgPGtlZXNjb29rQGNocm9taXVtLm9yZz4gd3Jv dGU6Cj4+Cj4+IE9uIFRodSwgT2N0IDIyLCAyMDIwIGF0IDAzOjAwOjA2QU0gKzAzMDAsIERtaXRy eSBPc2lwZW5rbyB3cm90ZToKPj4+IDIyLjEwLjIwMjAgMDI6NDAsIEtlZXMgQ29vayDQv9C40YjQ tdGCOgo+Pj4+IE9uIFRodSwgT2N0IDIyLCAyMDIwIGF0IDAxOjU3OjM3QU0gKzAzMDAsIERtaXRy eSBPc2lwZW5rbyB3cm90ZToKPj4+Pj4gVGhlIHZmcF9rbW9kZV9leGNlcHRpb24oKSBmdW5jdGlv biBub3cgaXMgdW5yZWFjaGFibGUgdXNpbmcgcmVsYXRpdmUKPj4+Pj4gYnJhbmNoaW5nIGluIFRI VU1CMiBrZXJuZWwgY29uZmlndXJhdGlvbiwgcmVzdWx0aW5nIGluIGEgInJlbG9jYXRpb24KPj4+ Pj4gdHJ1bmNhdGVkIHRvIGZpdDogUl9BUk1fVEhNX0pVTVAxOSBhZ2FpbnN0IHN5bWJvbCBgdmZw X2ttb2RlX2V4Y2VwdGlvbiciCj4+Pj4+IGxpbmtlciBlcnJvci4gTGV0J3MgdXNlIGxvbmcganVt cCBpbiBvcmRlciB0byBmaXggdGhlIGlzc3VlLgo+Pj4+Cj4+Pj4gRWVrLiBJcyB0aGlzIHdpdGgg Z2NjIG9yIGNsYW5nPwo+Pj4KPj4+IEdDQyA5LjMuMAo+Pj4KPj4+Pj4gRml4ZXM6IGVmZjg3Mjhm ZTY5OCAoInZtbGludXgubGRzLmg6IEFkZCBQR08gYW5kIEF1dG9GRE8gaW5wdXQgc2VjdGlvbnMi KQo+Pj4+Cj4+Pj4gQXJlIHlvdSBzdXJlIGl0IHdhc24ndCA1MTJkZDJlZWJlNTUgKCJhcm0vYnVp bGQ6IEFkZCBtaXNzaW5nIHNlY3Rpb25zIikgPwo+Pj4+IFRoYXQgY29tbWl0IG1heSBoYXZlIGlt cGxpY2l0bHkgbW92ZWQgdGhlIGxvY2F0aW9uIG9mIC52ZnAxMV92ZW5lZXIsCj4+Pj4gdGhvdWdo IEkgdGhvdWdodCBJIGhhZCBjaG9zZW4gdGhlIGNvcnJlY3QgcG9zaXRpb24uCj4+Pgo+Pj4gSSBy ZS1jaGVja2VkIHRoYXQgdGhlIGZpeGVzIHRhZyBpcyBjb3JyZWN0Lgo+Pj4KPj4+Pj4gU2lnbmVk LW9mZi1ieTogRG1pdHJ5IE9zaXBlbmtvIDxkaWdldHhAZ21haWwuY29tPgo+Pj4+PiAtLS0KPj4+ Pj4gIGFyY2gvYXJtL3ZmcC92ZnBody5TIHwgMyArKy0KPj4+Pj4gIDEgZmlsZSBjaGFuZ2VkLCAy IGluc2VydGlvbnMoKyksIDEgZGVsZXRpb24oLSkKPj4+Pj4KPj4+Pj4gZGlmZiAtLWdpdCBhL2Fy Y2gvYXJtL3ZmcC92ZnBody5TIGIvYXJjaC9hcm0vdmZwL3ZmcGh3LlMKPj4+Pj4gaW5kZXggNGZj ZmY5ZjU5OTQ3Li42ZTJiMjlmMGM0OGQgMTAwNjQ0Cj4+Pj4+IC0tLSBhL2FyY2gvYXJtL3ZmcC92 ZnBody5TCj4+Pj4+ICsrKyBiL2FyY2gvYXJtL3ZmcC92ZnBody5TCj4+Pj4+IEBAIC04Miw3ICs4 Miw4IEBAIEVOVFJZKHZmcF9zdXBwb3J0X2VudHJ5KQo+Pj4+PiAgICBsZHIgICAgIHIzLCBbc3As ICNTX1BTUl0gICAgICAgIEAgTmVpdGhlciBsYXp5IHJlc3RvcmUgbm9yIEZQIGV4Y2VwdGlvbnMK Pj4+Pj4gICAgYW5kICAgICByMywgcjMsICNNT0RFX01BU0sgICAgICBAIGFyZSBzdXBwb3J0ZWQg aW4ga2VybmVsIG1vZGUKPj4+Pj4gICAgdGVxICAgICByMywgI1VTUl9NT0RFCj4+Pj4+IC0gIGJu ZSAgICAgdmZwX2ttb2RlX2V4Y2VwdGlvbiAgICAgQCBSZXR1cm5zIHRocm91Z2ggbHIKPj4+Pj4g KyAgbGRyICAgICByMSwgPXZmcF9rbW9kZV9leGNlcHRpb24KPj4+Pj4gKyAgYnhuZSAgICByMSAg ICAgICAgICAgICAgICAgICAgICBAIFJldHVybnMgdGhyb3VnaCBscgo+Pj4+Pgo+Pj4+PiAgICBW RlBGTVJYIHIxLCBGUEVYQyAgICAgICAgICAgICAgIEAgSXMgdGhlIFZGUCBlbmFibGVkPwo+Pj4+ PiAgICBEQkdTVFIxICJmcGV4YyAlMDh4IiwgcjEKPj4+Pgo+Pj4+IFRoaXMgc2VlbXMgbGlrZSBh IHdvcmthcm91bmQgdGhvdWdoPyBJIHN1c3BlY3QgdGhlIHZmcDExX3ZlbmVlciBuZWVkcwo+Pj4+ IG1vdmluZz8KPj4+Pgo+Pj4KPj4+IEkgZG9uJ3Qga25vdyB3aGVyZSBpdCBuZWVkcyB0byBiZSBt b3ZlZC4gUGxlYXNlIGZlZWwgZnJlZSB0byBtYWtlIGEKPj4+IHBhdGNoIGlmIHlvdSBoYXZlIGEg YmV0dGVyIGlkZWEsIEknbGwgYmUgZ2xhZCB0byB0ZXN0IGl0Lgo+Pgo+PiBJIG1pZ2h0IGhhdmUg anVzdCBiZWVuIGRpc3RyYWN0ZWQgYnkgdGhlIGNvbW1vbiAidmZwIiBwcmVmaXguIEl0J3MKPj4g cG9zc2libGUgdGhhdCB0aGUgdGV4dCBzZWN0aW9uIHNodWZmbGluZyBqdXN0IGVuZGVkIHVwIGJl aW5nIHZlcnkgbGFyZ2UsCj4+IHNvIHByb2JhYmx5IHRoaXMgcGF0Y2ggaXMgcmlnaHQgdGhlbiEK Pj4KPiAKPiBJIGFscmVhZHkgc2VudCBhIGZpeCBmb3IgdGhpcyBpc3N1ZToKPiAKPiBodHRwczov L3d3dy5hcm1saW51eC5vcmcudWsvZGV2ZWxvcGVyL3BhdGNoZXMvdmlld3BhdGNoLnBocD9pZD05 MDE4LzEKPiAKClRoZSBvZmZlbmRpbmcgY29tbWl0IGNvbnRhaW5zIHN0YWJsZSB0YWcsIHNvIEkg YXNzdW1lIHRoYXQgZml4ZXMgdGFnIGlzCm1hbmRhdG9yeS4gWW91cnMgcGF0Y2ggbWlzc2VzIHRo ZSBmaXhlcyB0YWcuCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fXwpsaW51eC1hcm0ta2VybmVsIG1haWxpbmcgbGlzdApsaW51eC1hcm0ta2VybmVsQGxpc3Rz LmluZnJhZGVhZC5vcmcKaHR0cDovL2xpc3RzLmluZnJhZGVhZC5vcmcvbWFpbG1hbi9saXN0aW5m by9saW51eC1hcm0ta2VybmVsCg==