From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 485FC19644B; Tue, 19 May 2026 07:54:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=90.155.50.34 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779177301; cv=none; b=psZaRxEsV7KGjgxyLj9aiF3Tn+ucFD0Q25wVz1QjyQbebg6faEN+61YZ5ZIwFj2cSeDNSmn/T9iRH6WsZ6MnlJyvUVYaDNoo7alNloPnIXxG7Ukt069c4Ef1xc7FkCakJ9WOBX8pZiZ1bDDp6eiQMJLH7Drz9UiyCtvTwLCwRhk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779177301; c=relaxed/simple; bh=kxDnhCMFukfGQTD0OCV8H6wDlq4JqmueGtLA8tc8FP8=; h=Message-ID:Subject:From:To:Cc:Date:In-Reply-To:References: Content-Type:MIME-Version; b=l+z04g/M5AVbsknLGZeOv7ccqqhicfZKpoRhoppHAzilgD0ziqQ17jFtodREagCB0b3o13eTVyNGmoXXplE/6UuzNLws9kIhIJFOsB5okN4q1X04xaMmSLOX7zii/o0EJ36klAwa8rUWJqz19cWH8UpYvbw7453V0JhQyqZr968= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=infradead.org; spf=none smtp.mailfrom=casper.srs.infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=mjb4kKbr; arc=none smtp.client-ip=90.155.50.34 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=infradead.org Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=casper.srs.infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="mjb4kKbr" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; 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=kxDnhCMFukfGQTD0OCV8H6wDlq4JqmueGtLA8tc8FP8=; b=mjb4kKbrJ/Q2zXDIIGOJ32SVgA DHLYAdYPhjAoxXZy7N0ZI8Edf1UZAuPPXAUb9agUSue0Duv0Gt4PgYUDfQCgc+W6hV9tFdBKlM2WQ b9aNQqdrK5IR8mOFWDK7V/QimpZKdP3wlIViNxfg4i+BplaqX+RTukA+OnED0AK0xwupT6Ng+h0GU egUFRMVtVbC7k82tm6K4hWla+J+GsF2YVLZxf/19Gf5e+vouR3euCUlxO5Hc4AO7BxTWzyKJ0pKpe O6VlubjrBvUuklOMdEi+gcj7mMvGlZHEU/JpGTvMX59tTi5W2wQnd7gm+DScuDx1fj9ZnD2Zh7lZh vsET8LIg==; Received: from 54-240-197-233.amazon.com ([54.240.197.233] helo=u09cd745991455d.ant.amazon.com) by casper.infradead.org with esmtpsa (Exim 4.99.1 #2 (Red Hat Linux)) id 1wPFHz-00000005dTa-0xkJ; Tue, 19 May 2026 07:54:55 +0000 Message-ID: Subject: Re: [PATCH v4 16/30] KVM: x86: Restructure kvm_guest_time_update() for TSC upscaling From: David Woodhouse To: Dongli Zhang , kvm@vger.kernel.org Cc: Paolo Bonzini , Jonathan Corbet , Shuah Khan , Sean Christopherson , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Vitaly Kuznetsov , Juergen Gross , Boris Ostrovsky , Paul Durrant , Jonathan Cameron , Sascha Bischoff , Marc Zyngier , Joey Gouly , Jack Allister , joe.jin@oracle.com, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, xen-devel@lists.xenproject.org, linux-kselftest@vger.kernel.org Date: Tue, 19 May 2026 08:54:53 +0100 In-Reply-To: References: <20260509224824.3264567-1-dwmw2@infradead.org> <20260509224824.3264567-17-dwmw2@infradead.org> Content-Type: multipart/signed; micalg="sha-256"; protocol="application/pkcs7-signature"; boundary="=-fhzFy9YA8yde6QYEuqnv" User-Agent: Evolution 3.52.3-0ubuntu1.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html --=-fhzFy9YA8yde6QYEuqnv Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Tue, 2026-05-19 at 00:38 -0700, Dongli Zhang wrote: > I have encountered this build error with this patch. >=20 > Perhaps it is because all usage of "flags" are removed. >=20 > $ make -j32 > /dev/null > arch/x86/kvm/x86.c: In function =E2=80=98kvm_guest_time_update=E2=80=99: > arch/x86/kvm/x86.c:3359:23: error: unused variable =E2=80=98flags=E2=80= =99 [-Werror=3Dunused-variable] > =C2=A03359 |=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 unsigned lon= g flags; > =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=C2=A0= =C2=A0=C2=A0=C2=A0 ^~~~~ > cc1: all warnings being treated as errors > make[4]: *** [scripts/Makefile.build:289: arch/x86/kvm/x86.o] Error 1 > make[3]: *** [scripts/Makefile.build:548: arch/x86/kvm] Error 2 > make[2]: *** [scripts/Makefile.build:548: arch/x86] Error 2 > make[1]: *** [/home/opc/ext4/mainline-linux/Makefile:2143: .] Error 2 > make: *** [Makefile:248: __sub-make] Error 2 >=20 > Thank you very much! >=20 > Dongli Zhang Yes, in all the refactoring/rebasing, somehow the line which should have removed 'flags' there ended up in https://lore.kernel.org/all/20260509224824.3264567-31-dwmw2@infradead.org/ along with another one-liner that should have been in a different previous commit and breaks bisectability of that too. Sorry about that. Should all be fixed in https://git.infradead.org/?p=3Dusers/dwmw2/linux.git;a=3Dshortlog;h=3Drefs/= heads/kvmclock5 where I'm accumulating various fixes in preparation to post a v5. --=-fhzFy9YA8yde6QYEuqnv Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Disposition: attachment; filename="smime.p7s" Content-Transfer-Encoding: base64 MIAGCSqGSIb3DQEHAqCAMIACAQExDzANBglghkgBZQMEAgEFADCABgkqhkiG9w0BBwEAAKCCD9Aw ggSOMIIDdqADAgECAhAOmiw0ECVD4cWj5DqVrT9PMA0GCSqGSIb3DQEBCwUAMGUxCzAJBgNVBAYT AlVTMRUwEwYDVQQKEwxEaWdpQ2VydCBJbmMxGTAXBgNVBAsTEHd3dy5kaWdpY2VydC5jb20xJDAi BgNVBAMTG0RpZ2lDZXJ0IEFzc3VyZWQgSUQgUm9vdCBDQTAeFw0yNDAxMzAwMDAwMDBaFw0zMTEx MDkyMzU5NTlaMEExCzAJBgNVBAYTAkFVMRAwDgYDVQQKEwdWZXJva2V5MSAwHgYDVQQDExdWZXJv a2V5IFNlY3VyZSBFbWFpbCBHMjCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAMjvgLKj jfhCFqxYyRiW8g3cNFAvltDbK5AzcOaR7yVzVGadr4YcCVxjKrEJOgi7WEOH8rUgCNB5cTD8N/Et GfZI+LGqSv0YtNa54T9D1AWJy08ZKkWvfGGIXN9UFAPMJ6OLLH/UUEgFa+7KlrEvMUupDFGnnR06 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