From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 4E17730E0CC; Fri, 4 Sep 2026 08:04:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788509079; cv=none; b=ah8oCyFGEtuTWGfL4Cn9DAlD9kFlitD89+3z41nKADYXPB39QdcgPZaGnCK4sQ5zLitDRiIY59UdEbPhbafulXgaBlVezT5sC1gKWeluwyThrV7VqZZcjXg2CHne3cbEh4Vqt/2pCFPzzfABrDzaK9odFAHwwaA19pZR3o9tbR8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788509079; c=relaxed/simple; bh=3tNvoHoWQF1cTkbG3Q1EPPiZOKS0SYP1NlO3NRa+AaY=; h=From:Subject:To:Cc:In-Reply-To:References:Content-Type:Date: Message-Id; b=Mi6UX7JkyBd11MiOGMMnv53Ud0yI9ITwzzWjAxa4ItEb1BmQvOj17HUBhxAy3RA62qE6ebmMnKQ42ey0UBrf6beWQV4XtyA8AckqxTbF/NexZXCo5gFsYtPrx+WbFeMjRTvl3BZdf4+Z5qhst/i7nTx0aFH1m5mM2AKFFXZ/C24= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=JOiA6EcZ; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="JOiA6EcZ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C614E1F00A3D; Fri, 4 Sep 2026 08:04:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1788509078; bh=uOLT5Sl8tqECZQdY9hoKbUhdsZzRicCSf8sTWaP8m8k=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=JOiA6EcZIZCdGaoWIxGxLFFSE+O44wmHdwvdgQDWOKku9lU6QT+V9wO104bjhOxYd iUoCX+mB7953og6AB0EayZm4oEw5OBxCjlkoJb4Z1laN6YNlgkbRdxGUByRTCvdGrN 6deqWTahzzSQRTcOrTXn846BxWiMlSAF0napbkdFEZmu497K4qHW5lESye12jv7My0 x41f7XUv6JLxk9gUXzTQO5FOxQyxPZXdRx3e5RrVzdGEOereUlXUQTXcYICLHV5M0l Ayspb4P5CiZF5xP29eAZdbaW5ME+QMzr7Cga0k0sS7Ot0+y1H6DPLbvJRgBg00+TRI g4/LF1VvQ+vgQ== From: sashiko-bot@kernel.org Subject: Re: [PATCH v5 1/5] hyperv: Introduce new hypercall interfaces used by Hyper-V guest IOMMU Reply-To: sashiko-reviews@lists.linux.dev To: "Yu Zhang" Cc: linux-pci@vger.kernel.org, linux-hyperv@vger.kernel.org In-Reply-To: <20260904075512.174154-2-zhangyu1@linux.microsoft.com> References: <20260904075512.174154-1-zhangyu1@linux.microsoft.com> <20260904075512.174154-2-zhangyu1@linux.microsoft.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Fri, 04 Sep 2026 08:04:37 +0000 Message-Id: <20260904080437.C614E1F00A3D@smtp.kernel.org> Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: > From: Wei Liu >=20 > Hyper-V guest IOMMU is a para-virtualized IOMMU based on hypercalls. > Introduce the hypercalls used by the child partition to interact with > this facility. >=20 > These hypercalls fall into below categories: > - Detection and capability: HVCALL_GET_IOMMU_CAPABILITIES is used to > detect the existence and capabilities of the guest IOMMU. >=20 > - Device management: HVCALL_GET_LOGICAL_DEVICE_PROPERTY is used to > check whether an endpoint device is managed by the guest IOMMU. >=20 > - Domain management: A set of hypercalls is provided to handle the > creation, configuration, and deletion of guest domains, as well as > the attachment/detachment of endpoint devices to/from those domains. >=20 > - IOTLB flushing: HVCALL_FLUSH_DEVICE_DOMAIN is used to ask Hyper-V > for a domain-selective IOTLB flush (which in its handler may flush > the device TLB as well). >=20 > Signed-off-by: Wei Liu > Co-developed-by: Easwar Hariharan > Signed-off-by: Easwar Hariharan > Co-developed-by: Yu Zhang > Signed-off-by: Yu Zhang Sashiko has reviewed this patch and found no issues. It looks great! --=20 Sashiko AI review =C2=B7 https://sashiko.dev/#/patchset/20260904075512.1741= 54-1-zhangyu1@linux.microsoft.com?part=3D1