From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail05.groups.io (mail05.groups.io [45.79.224.7]) by spool.mail.gandi.net (Postfix) with ESMTPS id 022EFD8019A for ; Thu, 13 Mar 2025 00:49:50 +0000 (UTC) DKIM-Signature: a=rsa-sha256; bh=EhMB6n9nAp8nElEoM66Ahh/xTqYEu5kWEEOVREluKdI=; c=relaxed/simple; d=groups.io; h=Subject:To:From:User-Agent:MIME-Version:Date:References:In-Reply-To:Message-ID:Precedence:List-Subscribe:List-Help:Sender:List-Id:Mailing-List:Delivered-To:Reply-To:List-Unsubscribe-Post:List-Unsubscribe:Content-Type; s=20240830; t=1741826990; v=1; x=1742086189; b=XkoJoQCIrDxv5/99oDY0ZudXwaAnT8AIM9k4TxmE9QugZHNRWBtwB2XMQBleYpy1GTRLt5DM owkVB8pLAuOFGmad1yiZG7+pAPiw1daq/nsap7B6KNB8cOWQIuDH+2YUQHQ/i8sTw+9qSqs8ybd 8l4R348iWDR1Fg+CxOvTFDSu2HwT97jFbK3KR/pt0+8wYmFn6h7EB/VNsojLnAC1gu00XubYCoe +KQYEFVOxmM3tAvD+XgOMgl2xZw/zGZPVku+o4HMiuDhMvtMQM76I9bRf9K+8cdoJDBn3lvBr4e +nlh13U0r7Fdm0/Z+I1/060O2tFK1AC3SjBUb4DW2ABJg== X-Received: by 127.0.0.2 with SMTP id 5hrDYY7687511xA2AOEPYXRT; Wed, 12 Mar 2025 17:49:49 -0700 Subject: Re: [edk2-devel] [BUG] Extremely slow boot times with CPU and GPU passthrough and host phys-bits > 40 To: mitchell.augustin@canonical.com, devel@edk2.groups.io From: "mitchell.augustin via groups.io" X-Originating-Location: Waterloo, Illinois, US (65.87.55.115) X-Originating-Platform: Linux Chrome 133 User-Agent: GROUPS.IO Web Poster MIME-Version: 1.0 Date: Wed, 12 Mar 2025 17:49:43 -0700 References: <23568.1739577544707558908@groups.io> In-Reply-To: <23568.1739577544707558908@groups.io> Message-ID: <7915.1741826983661245062@groups.io> Precedence: Bulk List-Subscribe: List-Help: Sender: devel@edk2.groups.io List-Id: Mailing-List: list devel@edk2.groups.io; contact devel+owner@edk2.groups.io Reply-To: devel@edk2.groups.io,mitchell.augustin@canonical.com List-Unsubscribe-Post: List-Unsubscribe=One-Click List-Unsubscribe: X-Gm-Message-State: FxiOboQVtkQlm6MMLp7AEWUzx7686176AA= Content-Type: multipart/alternative; boundary="PfBjlA7RqOY887lHeygk" X-GND-Status: LEGIT Authentication-Results: spool.mail.gandi.net; dkim=pass header.d=groups.io header.s=20240830 header.b=XkoJoQCI; spf=pass (spool.mail.gandi.net: domain of bounce@groups.io designates 45.79.224.7 as permitted sender) smtp.mailfrom=bounce@groups.io; dmarc=pass (policy=none) header.from=groups.io --PfBjlA7RqOY887lHeygk Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable I have proposed an OVMF workaround for users of older kernels who won't be = able to benefit from the root cause fixes: https://github.com/tianocore/edk= 2/pull/10853 That would allow them to opt out of using the PlatformDynamicMmioWindow via= a fw_cfg option, which would result in fast guest boots on impacted platfo= rms (but would require `pci=3Dnocrs pci=3Drealloc` in the guest to make use= of large passed-through devices.) Full details in the linked PR. -Mitchell Augustin -=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#121193): https://edk2.groups.io/g/devel/message/121193 Mute This Topic: https://groups.io/mt/109651206/7686176 Group Owner: devel+owner@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [rebecca@openfw.io] -=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D- --PfBjlA7RqOY887lHeygk Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: quoted-printable
I have proposed an OVMF workaround for users of older kernels who won'= t be able to benefit from the root cause fixes: https://gi= thub.com/tianocore/edk2/pull/10853
 
That would allow them to opt out of using the PlatformDynamicMmioWindo= w via a fw_cfg option, which would result in fast guest boots on impacted p= latforms (but would require `pci=3Dnocrs pci=3Drealloc` in the guest to mak= e use of large passed-through devices.)
 
Full details in the linked PR.
 
-Mitchell Augustin
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