From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 66BEBC433F5 for ; Fri, 19 Nov 2021 10:43:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 46C51611C4 for ; Fri, 19 Nov 2021 10:43:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234858AbhKSKqG (ORCPT ); Fri, 19 Nov 2021 05:46:06 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36198 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229521AbhKSKqF (ORCPT ); Fri, 19 Nov 2021 05:46:05 -0500 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C38E2C061574; Fri, 19 Nov 2021 02:43:03 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=MIME-Version:Content-Type:References: In-Reply-To:Date:Cc:To:From:Subject:Message-ID:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=N5RP1aj+OUjkMa9pYkgVrEr6fEzsT1gIUSRHQHnZ0IM=; b=EQMzqtJ5Jo5/5Ph9p7Eb2/CypQ XSw6biyLwFP8Ipc5R9j1RF5SFC2APfheYReT+C0Rb5qd7m+1dCN9/pVk8kHSsOUf92TejZ6u1W9Af Q3XuWjQijsrTKUTXFo2BwfheSjEIevgsXPr39ZT5FBnXGnkkYWInBFJ/6YzDKE10L/BzHgo7zcDvh nFHL1FNv/HtpaQ7sYIegW9zIJ6ZiVrxkt8UN7VUz2z8YpccWtc9eD/saMdbXtMGQwRrZw634dUpsU bG3YzkTlpG+EGft4gCe+hy/i1HJxMqehVHYzzrAGd1KxT1CfjuF/9f+GCpaT1HsxNsj3nlyYA6cec XtTqaLlA==; Received: from [2001:8b0:10b:1:4a2a:e3ff:fe14:8625] (helo=u3832b3a9db3152.ant.amazon.com) by bombadil.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1mo1MA-00AA1v-IZ; Fri, 19 Nov 2021 10:42:58 +0000 Message-ID: Subject: Re: Bug: arch/x86/kvm/x86.c:3241: Error: bad register name `%dil' From: David Woodhouse To: "H. Nikolaus Schaller" , Paolo Bonzini Cc: linux-kernel , stable@vger.kernel.org, Stephen Rothwell , gregkh@linuxfoundation.org Date: Fri, 19 Nov 2021 10:42:56 +0000 In-Reply-To: <903C3043-174A-4C67-9823-E433CD5DEA53@goldelico.com> References: <903C3043-174A-4C67-9823-E433CD5DEA53@goldelico.com> Content-Type: multipart/signed; micalg="sha-256"; protocol="application/pkcs7-signature"; boundary="=-C9DybyS7Cori4RGbRjXO" User-Agent: Evolution 3.36.5-0ubuntu1 MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --=-C9DybyS7Cori4RGbRjXO Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Fri, 2021-11-19 at 11:33 +0100, H. Nikolaus Schaller wrote: > Hi Paolo and David, > I have a strange compile error which appeared in v5.15.3: >=20 > CALL scripts/checksyscalls.sh - due to target missing > CALL scripts/atomic/check-atomics.sh - due to target missing > CHK include/generated/compile.h - due to compile.h not in $(targets= ) > CC arch/x86/kvm/x86.o - due to target missing > arch/x86/kvm/x86.c: Assembler messages: > arch/x86/kvm/x86.c:3241: Error: bad register name `%dil' > scripts/Makefile.build:277: recipe for target 'arch/x86/kvm/x86.o' failed > make[3]: *** [arch/x86/kvm/x86.o] Error 1 > scripts/Makefile.build:540: recipe for target 'arch/x86/kvm' failed > make[2]: *** [arch/x86/kvm] Error 2 > Makefile:1868: recipe for target 'arch/x86' failed > make[1]: *** [arch/x86] Error 2 > Makefile:350: recipe for target '__build_one_by_one' failed > make: *** [__build_one_by_one] Error 2 >=20 > My (cross-)compiler is a gcc 6.3.0 for 32 bit x86. >=20 > It is neither with v5.15.2 nor v5.16-rc1 nor v5.14.20. >=20 > The code line 3241 is: >=20 > asm volatile("1: xchgb %0, %2\n" > "xor %1, %1\n" > "2:\n" > _ASM_EXTABLE_UA(1b, 2b) > : "+r" (st_preempted), > "+&r" (err) > : "m" (st->preempted)); >=20 > This seems to have been introduced by: >=20 > 9d12bf19b278 KVM: x86: Fix recording of guest steal time / preempted stat= us >=20 > but it is a backport of commit 7e2175ebd695f17860c5bd4ad7616cce12ed4591 > which was also merged to 5.14.20. >=20 Hi Nikolaus, thanks for the report, and sorry for the inconvenience. Please could you confirm that it's fixed by https://git.kernel.org/pub/scm/virt/kvm/kvm.git/commit/?id=3D964b7aa0b040 Thanks! --=-C9DybyS7Cori4RGbRjXO Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Disposition: attachment; filename="smime.p7s" Content-Transfer-Encoding: base64 MIAGCSqGSIb3DQEHAqCAMIACAQExDzANBglghkgBZQMEAgEFADCABgkqhkiG9w0BBwEAAKCCECow ggUcMIIEBKADAgECAhEA4rtJSHkq7AnpxKUY8ZlYZjANBgkqhkiG9w0BAQsFADCBlzELMAkGA1UE BhMCR0IxGzAZBgNVBAgTEkdyZWF0ZXIgTWFuY2hlc3RlcjEQMA4GA1UEBxMHU2FsZm9yZDEaMBgG A1UEChMRQ09NT0RPIENBIExpbWl0ZWQxPTA7BgNVBAMTNENPTU9ETyBSU0EgQ2xpZW50IEF1dGhl bnRpY2F0aW9uIGFuZCBTZWN1cmUgRW1haWwgQ0EwHhcNMTkwMTAyMDAwMDAwWhcNMjIwMTAxMjM1 OTU5WjAkMSIwIAYJKoZIhvcNAQkBFhNkd213MkBpbmZyYWRlYWQub3JnMIIBIjANBgkqhkiG9w0B AQEFAAOCAQ8AMIIBCgKCAQEAsv3wObLTCbUA7GJqKj9vHGf+Fa+tpkO+ZRVve9EpNsMsfXhvFpb8 RgL8vD+L133wK6csYoDU7zKiAo92FMUWaY1Hy6HqvVr9oevfTV3xhB5rQO1RHJoAfkvhy+wpjo7Q cXuzkOpibq2YurVStHAiGqAOMGMXhcVGqPuGhcVcVzVUjsvEzAV9Po9K2rpZ52FE4rDkpDK1pBK+ 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