Message ID | 20240521130946.117849-6-clement.mathieu--drif@eviden.com |
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State | New |
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Tue, 21 May 2024 13:11:41 +0000 Received: from AM8PR07MB7602.eurprd07.prod.outlook.com ([fe80::fbd7:ca71:b636:6f9d]) by AM8PR07MB7602.eurprd07.prod.outlook.com ([fe80::fbd7:ca71:b636:6f9d%5]) with mapi id 15.20.7587.035; Tue, 21 May 2024 13:11:41 +0000 From: CLEMENT MATHIEU--DRIF <clement.mathieu--drif@eviden.com> To: "qemu-devel@nongnu.org" <qemu-devel@nongnu.org> CC: "jasowang@redhat.com" <jasowang@redhat.com>, "zhenzhong.duan@intel.com" <zhenzhong.duan@intel.com>, "kevin.tian@intel.com" <kevin.tian@intel.com>, "yi.l.liu@intel.com" <yi.l.liu@intel.com>, "joao.m.martins@oracle.com" <joao.m.martins@oracle.com>, "peterx@redhat.com" <peterx@redhat.com>, CLEMENT MATHIEU--DRIF <clement.mathieu--drif@eviden.com> Subject: [PATCH ats_vtd 05/22] memory: add permissions in IOMMUAccessFlags Thread-Topic: [PATCH ats_vtd 05/22] memory: add permissions in IOMMUAccessFlags Thread-Index: AQHaq4BrjVcZ9I524kuvkvI+pg0RuQ== Date: Tue, 21 May 2024 13:11:41 +0000 Message-ID: <20240521130946.117849-6-clement.mathieu--drif@eviden.com> References: <20240521130946.117849-1-clement.mathieu--drif@eviden.com> In-Reply-To: <20240521130946.117849-1-clement.mathieu--drif@eviden.com> Accept-Language: en-GB, fr-FR, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=eviden.com; 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ATS support for VT-d
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expand
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diff --git a/include/exec/memory.h b/include/exec/memory.h index dadb5cd65a..0067b2266a 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -110,15 +110,34 @@ struct MemoryRegionSection { typedef struct IOMMUTLBEntry IOMMUTLBEntry; -/* See address_space_translate: bit 0 is read, bit 1 is write. */ +/* + * See address_space_translate: + * - bit 0 : read + * - bit 1 : write + * - bit 2 : exec + * - bit 3 : priv + * - bit 4 : global + * - bit 5 : untranslated only + */ typedef enum { IOMMU_NONE = 0, IOMMU_RO = 1, IOMMU_WO = 2, IOMMU_RW = 3, + IOMMU_EXEC = 4, + IOMMU_PRIV = 8, + IOMMU_GLOBAL = 16, + IOMMU_UNTRANSLATED_ONLY = 32, } IOMMUAccessFlags; -#define IOMMU_ACCESS_FLAG(r, w) (((r) ? IOMMU_RO : 0) | ((w) ? IOMMU_WO : 0)) +#define IOMMU_ACCESS_FLAG(r, w) (((r) ? IOMMU_RO : 0) | \ + ((w) ? IOMMU_WO : 0)) +#define IOMMU_ACCESS_FLAG_FULL(r, w, x, p, g, uo) \ + (IOMMU_ACCESS_FLAG(r, w) | \ + ((x) ? IOMMU_EXEC : 0) | \ + ((p) ? IOMMU_PRIV : 0) | \ + ((g) ? IOMMU_GLOBAL : 0) | \ + ((uo) ? IOMMU_UNTRANSLATED_ONLY : 0)) struct IOMMUTLBEntry { AddressSpace *target_as;
This will be necessary for devices implementing ATS. We also define a new macro IOMMU_ACCESS_FLAG_FULL in addition to IOMMU_ACCESS_FLAG to support more access flags. IOMMU_ACCESS_FLAG is kept for convenience and backward compatibility. Here are the flags added (defined by the PCIe 5 specification) : - Execute Requested - Privileged Mode Requested - Global - Untranslated Only IOMMU_ACCESS_FLAG sets the additional flags to 0 Signed-off-by: Clément Mathieu--Drif <clement.mathieu--drif@eviden.com> --- include/exec/memory.h | 23 +++++++++++++++++++++-- 1 file changed, 21 insertions(+), 2 deletions(-)