From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 0FD1F2ECFDC; Mon, 5 May 2025 23:08:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746486494; cv=none; b=coZHvZJsTxVIGnRCoP3I87OFqG+/AHKsikploRrRXYw2pE4leejipgoMzqcyqfLjsDWnILMB+0qznd09bNlnMjuyTcSPMrHWzg4RM5/J2j/27SiAIZsSNO6yd+JSZhKw3sXJoaOAFsaqEeF2NH6WLX1m6dEPfFYVjjdEQvaTFi4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746486494; c=relaxed/simple; bh=1rX1VygvKUtt1fWJvrpYXGnj2mNZwGwmHDPfH9Do8c8=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=qJi55SYnqKpyiK359Raf1HdAheD5Z1FdTUYSHwf+W4kiutGk8YdcSdLdll3r0Us7fbSP/5R+kcquegplMUXwma1HB6ZnC9mG7ryvwKJATG1XbGtVEzsFdlBUcU0QQ/UqUf41iVKbmrkUYVbzhvBCwRfzOHs75HxDMxtmxwxQ4ro= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=TvAO0jLb; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="TvAO0jLb" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1DDACC4CEEF; Mon, 5 May 2025 23:08:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1746486492; bh=1rX1VygvKUtt1fWJvrpYXGnj2mNZwGwmHDPfH9Do8c8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=TvAO0jLb25amMByUDLJDhIkH386Nh81qHTFycwZlLzWDph+K+odnbo2eli6r4KdBJ mEZvE9IksasZyRGZftOWx+PuJc32MH1HkVZG3SqD29IUjmsCPGRRbMfwPRSGIEJtG7 Xdlg0/lIriFlofR+tz70c04WtMq2meSt0cIMJH8LwJNgeu0HPp786Nepwh+/Qjh98L m0V2k7N+7gkPBOf2F5dozeqJ1cFRkvDcsSuxy0IDC6r4u8y+iCB6wJY8wjH4KE5Oxm h8FaDwiMzn+PJj7QuyWl10bwcdsPiNg5AURa2PWYRktifweHhATlL1mYGWIzfO96l2 6o7tsYLNlmJpg== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Frediano Ziglio , Juergen Gross , Sasha Levin , sstabellini@kernel.org, xen-devel@lists.xenproject.org Subject: [PATCH AUTOSEL 6.1 059/212] xen: Add support for XenServer 6.1 platform device Date: Mon, 5 May 2025 19:03:51 -0400 Message-Id: <20250505230624.2692522-59-sashal@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250505230624.2692522-1-sashal@kernel.org> References: <20250505230624.2692522-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 6.1.136 Content-Transfer-Encoding: 8bit From: Frediano Ziglio [ Upstream commit 2356f15caefc0cc63d9cc5122641754f76ef9b25 ] On XenServer on Windows machine a platform device with ID 2 instead of 1 is used. This device is mainly identical to device 1 but due to some Windows update behaviour it was decided to use a device with a different ID. This causes compatibility issues with Linux which expects, if Xen is detected, to find a Xen platform device (5853:0001) otherwise code will crash due to some missing initialization (specifically grant tables). Specifically from dmesg RIP: 0010:gnttab_expand+0x29/0x210 Code: 90 0f 1f 44 00 00 55 31 d2 48 89 e5 41 57 41 56 41 55 41 89 fd 41 54 53 48 83 ec 10 48 8b 05 7e 9a 49 02 44 8b 35 a7 9a 49 02 <8b> 48 04 8d 44 39 ff f7 f1 45 8d 24 06 89 c3 e8 43 fe ff ff 44 39 RSP: 0000:ffffba34c01fbc88 EFLAGS: 00010086 ... The device 2 is presented by Xapi adding device specification to Qemu command line. Signed-off-by: Frediano Ziglio Acked-by: Juergen Gross Message-ID: <20250227145016.25350-1-frediano.ziglio@cloud.com> Signed-off-by: Juergen Gross Signed-off-by: Sasha Levin --- drivers/xen/platform-pci.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/xen/platform-pci.c b/drivers/xen/platform-pci.c index 544d3f9010b92..1db82da56db62 100644 --- a/drivers/xen/platform-pci.c +++ b/drivers/xen/platform-pci.c @@ -26,6 +26,8 @@ #define DRV_NAME "xen-platform-pci" +#define PCI_DEVICE_ID_XEN_PLATFORM_XS61 0x0002 + static unsigned long platform_mmio; static unsigned long platform_mmio_alloc; static unsigned long platform_mmiolen; @@ -174,6 +176,8 @@ static int platform_pci_probe(struct pci_dev *pdev, static const struct pci_device_id platform_pci_tbl[] = { {PCI_VENDOR_ID_XEN, PCI_DEVICE_ID_XEN_PLATFORM, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, + {PCI_VENDOR_ID_XEN, PCI_DEVICE_ID_XEN_PLATFORM_XS61, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, {0,} }; -- 2.39.5