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 lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 2014AC433F5 for ; Fri, 10 Dec 2021 12:26:52 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4J9VWv1W8wz3cJl for ; Fri, 10 Dec 2021 23:26:51 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; secure) header.d=infradead.org header.i=@infradead.org header.a=rsa-sha256 header.s=bombadil.20210309 header.b=lO+bpr8i; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=none (no SPF record) smtp.mailfrom=bombadil.srs.infradead.org (client-ip=2607:7c80:54:e::133; helo=bombadil.infradead.org; envelope-from=batv+b93aac28df581110f579+6683+infradead.org+dwmw2@bombadil.srs.infradead.org; receiver=) Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; secure) header.d=infradead.org header.i=@infradead.org header.a=rsa-sha256 header.s=bombadil.20210309 header.b=lO+bpr8i; dkim-atps=neutral Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4J9VW75mS2z3bTS for ; Fri, 10 Dec 2021 23:26:06 +1100 (AEDT) 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=/xS+egC0DslbdYLNDrFkbLhwEWeOB8Z7CBQVM0MYPdg=; b=lO+bpr8i8xSHXv2plQRwfU/RKN mLZ1eQcnJJY2ogCcTq4BLlDYpdsHXE1p/fNhRCEOdSvvs+j5lenrC5FNezkekwzTt4CUHuDPusNK3 aS76B16E2rZaemORGESULE2L4AZEedwXtRgN8GfplMIc3FPd4wo1MN3fUWlBfrgvmKLgLYcvP3xip tHtvW8+CXy4Zas6I/P3mnb9pb62CdULZZqF2nQPu/wYlvvAo47qJVsDDnpZOoG1HpcHAgRQBhPRni N370iqu8fMP9TzT1lU7rNCt91U0o7hE+yBpsJHlOpacCjO33AIVd/pbKZIeJG5a3prx8UwtGYsnK8 nneNXWEA==; 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 1mvexY-001op2-TS; Fri, 10 Dec 2021 12:25:09 +0000 Message-ID: <5d0a68cd0d06884a2a58338aace811144990f8f5.camel@infradead.org> Subject: Re: [PATCH v5 08/12] KVM: Reinstate gfn_to_pfn_cache with invalidation support From: David Woodhouse To: Paolo Bonzini , kvm Date: Fri, 10 Dec 2021 12:25:03 +0000 In-Reply-To: <6cb2cd57-16f3-d0ec-adf6-cb8fdcbae035@redhat.com> References: <20211121125451.9489-1-dwmw2@infradead.org> <20211121125451.9489-9-dwmw2@infradead.org> <6cb2cd57-16f3-d0ec-adf6-cb8fdcbae035@redhat.com> Content-Type: multipart/signed; micalg="sha-256"; protocol="application/pkcs7-signature"; boundary="=-IkgJij8Dvj8ErQVy8kci" 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 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Anup Patel , "wanpengli @ tencent . com" , Catalin Marinas , Joao Martins , Will Deacon , kvmarm@lists.cs.columbia.edu, linux-s390@vger.kernel.org, "joro @ 8bytes . org" , Huacai Chen , Christian Borntraeger , Aleksandar Markovic , karahmed@amazon.com, Suzuki K Poulose , butt3rflyh4ck , Boris Ostrovsky , Alexandru Elisei , linux-arm-kernel , "jmattson @ google . com" , "seanjc @ google . com" , "mtosatti @ redhat . com" , linux-mips@vger.kernel.org, James Morse , kvm-riscv@lists.infradead.org, Marc Zyngier , "vkuznets @ redhat . com" , linuxppc-dev@lists.ozlabs.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" --=-IkgJij8Dvj8ErQVy8kci Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Thu, 2021-12-09 at 23:34 +0100, Paolo Bonzini wrote: >=20 > Compared to the review it's missing this hunk: >=20 > @@ -265,7 +265,7 @@ void kvm_gfn_to_pfn_cache_unmap(struct kvm *kvm, stru= ct gfn_to_pfn_cache *gpc) =20 >=20 > gpc->valid =3D false; >=20 > - old_khva =3D gpc->khva; > + old_khva =3D (void *)((unsigned long)gpc->khva & ~PAGE_MASK); > old_dirty =3D gpc->dirty; Do you know what? I couldn't bring myself to add that a second time. I managed it once, but it made me sad. Did it like this instead: - old_khva =3D gpc->khva; + old_khva =3D gpc->khva - offset_in_page(gpc->khva); I checked that for me at least, GCC is clever enough to just do the mask. old_khva =3D gpc->khva - offset_in_page(gpc->khva); 131: 48 8b 43 78 mov 0x78(%rbx),%rax 135: 48 25 00 f0 ff ff and $0xfffffffffffff000,%rax I still don't see the previous patches in kvm/next =E2=80=94 is that an automatic push after testing has passed, or is the kernel.org infrastructure just *really* slow? I've pushed based on the currently-visible kvm/next to https://git.infradead.org/users/dwmw2/linux.git/shortlog/refs/heads/xen-evt= chn and can resend when the tree finally surfaces. --=-IkgJij8Dvj8ErQVy8kci 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 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