From nobody Fri Dec 19 14:08:12 2025 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.10]) (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 311DBEACD; Wed, 20 Dec 2023 01:28:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="Gr2pHw5s" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1703035723; x=1734571723; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=BLX4zQ7UIi2x2hw/ngzDFRoKaAHe7Rh5npj32JkG4L0=; b=Gr2pHw5sn49iDFiJwgoqSB3MckPyyg6zMHVH9JLoOFuDktuVn1+c5dPE IRX0dsN6APp5yOFgGJdp57XkuJenxdWQN0l20kcMl0F0u5o1zds/L17BV ShRCqLBurdLUDT4RVpIR/bqqmKDhzkusyTf/CPbGR1NHAb4IqJh+hujtO Zab/9HZqn19Kx+NLVVkcPpGGDx0cRP/F/idEHe0LB7zknedN8sBMmG3jy vIPVp6tjFa4ouc+bz6M9TogXY7nGLQbv2wxgYwa/lNIlusXq3VC7qRrFN iQ/2bJIpGwLxtV0+aoqvwvsLoGWF/W/0IroFUJ76+Y9gRgdwSQHhe/oxv g==; X-IronPort-AV: E=McAfee;i="6600,9927,10929"; a="2965745" X-IronPort-AV: E=Sophos;i="6.04,290,1695711600"; d="scan'208";a="2965745" Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by fmvoesa104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Dec 2023 17:28:43 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10929"; a="1023319076" X-IronPort-AV: E=Sophos;i="6.04,290,1695711600"; d="scan'208";a="1023319076" Received: from allen-box.sh.intel.com ([10.239.159.127]) by fmsmga006.fm.intel.com with ESMTP; 19 Dec 2023 17:28:39 -0800 From: Lu Baolu To: Joerg Roedel , Will Deacon , Robin Murphy , Jason Gunthorpe , Kevin Tian , Jean-Philippe Brucker , Nicolin Chen Cc: Yi Liu , Jacob Pan , Longfang Liu , Yan Zhao , iommu@lists.linux.dev, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Lu Baolu , Jason Gunthorpe Subject: [PATCH v9 03/14] iommu: Remove unrecoverable fault data Date: Wed, 20 Dec 2023 09:23:21 +0800 Message-Id: <20231220012332.168188-4-baolu.lu@linux.intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231220012332.168188-1-baolu.lu@linux.intel.com> References: <20231220012332.168188-1-baolu.lu@linux.intel.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" The unrecoverable fault data is not used anywhere. Remove it to avoid dead code. Suggested-by: Kevin Tian Signed-off-by: Lu Baolu Reviewed-by: Jason Gunthorpe Reviewed-by: Kevin Tian Tested-by: Yan Zhao Tested-by: Longfang Liu --- include/linux/iommu.h | 72 ++----------------------------------------- 1 file changed, 2 insertions(+), 70 deletions(-) diff --git a/include/linux/iommu.h b/include/linux/iommu.h index 80dfdc40b267..2d0ab1c3dce5 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -50,67 +50,7 @@ struct iommu_dma_cookie; =20 /* Generic fault types, can be expanded IRQ remapping fault */ enum iommu_fault_type { - IOMMU_FAULT_DMA_UNRECOV =3D 1, /* unrecoverable fault */ - IOMMU_FAULT_PAGE_REQ, /* page request fault */ -}; - -enum iommu_fault_reason { - IOMMU_FAULT_REASON_UNKNOWN =3D 0, - - /* Could not access the PASID table (fetch caused external abort) */ - IOMMU_FAULT_REASON_PASID_FETCH, - - /* PASID entry is invalid or has configuration errors */ - IOMMU_FAULT_REASON_BAD_PASID_ENTRY, - - /* - * PASID is out of range (e.g. exceeds the maximum PASID - * supported by the IOMMU) or disabled. - */ - IOMMU_FAULT_REASON_PASID_INVALID, - - /* - * An external abort occurred fetching (or updating) a translation - * table descriptor - */ - IOMMU_FAULT_REASON_WALK_EABT, - - /* - * Could not access the page table entry (Bad address), - * actual translation fault - */ - IOMMU_FAULT_REASON_PTE_FETCH, - - /* Protection flag check failed */ - IOMMU_FAULT_REASON_PERMISSION, - - /* access flag check failed */ - IOMMU_FAULT_REASON_ACCESS, - - /* Output address of a translation stage caused Address Size fault */ - IOMMU_FAULT_REASON_OOR_ADDRESS, -}; - -/** - * struct iommu_fault_unrecoverable - Unrecoverable fault data - * @reason: reason of the fault, from &enum iommu_fault_reason - * @flags: parameters of this fault (IOMMU_FAULT_UNRECOV_* values) - * @pasid: Process Address Space ID - * @perm: requested permission access using by the incoming transaction - * (IOMMU_FAULT_PERM_* values) - * @addr: offending page address - * @fetch_addr: address that caused a fetch abort, if any - */ -struct iommu_fault_unrecoverable { - __u32 reason; -#define IOMMU_FAULT_UNRECOV_PASID_VALID (1 << 0) -#define IOMMU_FAULT_UNRECOV_ADDR_VALID (1 << 1) -#define IOMMU_FAULT_UNRECOV_FETCH_ADDR_VALID (1 << 2) - __u32 flags; - __u32 pasid; - __u32 perm; - __u64 addr; - __u64 fetch_addr; + IOMMU_FAULT_PAGE_REQ =3D 1, /* page request fault */ }; =20 /** @@ -142,19 +82,11 @@ struct iommu_fault_page_request { /** * struct iommu_fault - Generic fault data * @type: fault type from &enum iommu_fault_type - * @padding: reserved for future use (should be zero) - * @event: fault event, when @type is %IOMMU_FAULT_DMA_UNRECOV * @prm: Page Request message, when @type is %IOMMU_FAULT_PAGE_REQ - * @padding2: sets the fault size to allow for future extensions */ struct iommu_fault { __u32 type; - __u32 padding; - union { - struct iommu_fault_unrecoverable event; - struct iommu_fault_page_request prm; - __u8 padding2[56]; - }; + struct iommu_fault_page_request prm; }; =20 /** --=20 2.34.1