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helo=lists.xenproject.org; Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB03.amd.com; pr=C From: Henry Wang To: CC: Anthony PERARD , George Dunlap , Nick Rosbrook , "Juergen Gross" , Henry Wang , Jason Andryuk Subject: [PATCH v4 3/9] tools/arm: Introduce the "nr_spis" xl config entry Date: Thu, 23 May 2024 15:40:34 +0800 Message-ID: <20240523074040.1611264-4-xin.wang2@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240523074040.1611264-1-xin.wang2@amd.com> References: <20240523074040.1611264-1-xin.wang2@amd.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: None (SATLEXMB03.amd.com: xin.wang2@amd.com does not designate permitted sender hosts) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CH1PEPF0000AD74:EE_|PH7PR12MB6882:EE_ X-MS-Office365-Filtering-Correlation-Id: ef06980a-a40e-4bda-512a-08dc7afbab4d X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230031|82310400017|1800799015|376005|36860700004; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 23 May 2024 07:40:50.8337 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: ef06980a-a40e-4bda-512a-08dc7afbab4d X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB03.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CH1PEPF0000AD74.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB6882 X-ZohoMail-DKIM: pass (identity @amd.com) X-ZM-MESSAGEID: 1716450081305100001 Content-Type: text/plain; charset="utf-8" Currently, the number of SPIs allocated to the domain is only configurable for Dom0less DomUs. Xen domains are supposed to be platform agnostics and therefore the numbers of SPIs for libxl guests should not be based on the hardware. Introduce a new xl config entry for Arm to provide a method for user to decide the number of SPIs. This would help to avoid bumping the `config->arch.nr_spis` in libxl everytime there is a new platform with increased SPI numbers. Update the doc and the golang bindings accordingly. Signed-off-by: Henry Wang Reviewed-by: Jason Andryuk --- v4: - Add Jason's Reviewed-by tag. v3: - Reword documentation to avoid ambiguity. v2: - New patch to replace the original patch in v1: "[PATCH 05/15] tools/libs/light: Increase nr_spi to 160" --- docs/man/xl.cfg.5.pod.in | 14 ++++++++++++++ tools/golang/xenlight/helpers.gen.go | 2 ++ tools/golang/xenlight/types.gen.go | 1 + tools/libs/light/libxl_arm.c | 4 ++-- tools/libs/light/libxl_types.idl | 1 + tools/xl/xl_parse.c | 3 +++ 6 files changed, 23 insertions(+), 2 deletions(-) diff --git a/docs/man/xl.cfg.5.pod.in b/docs/man/xl.cfg.5.pod.in index 8f2b375ce9..416d582844 100644 --- a/docs/man/xl.cfg.5.pod.in +++ b/docs/man/xl.cfg.5.pod.in @@ -3072,6 +3072,20 @@ raised. =20 =3Dback =20 +=3Dover 4 + +=3Ditem B + +An optional 32-bit integer parameter specifying the number of SPIs (Shared +Peripheral Interrupts) to allocate for the domain. If the value specified = by +the `nr_spis` parameter is smaller than the number of SPIs calculated by t= he +toolstack based on the devices allocated for the domain, or the `nr_spis` +parameter is not specified, the value calculated by the toolstack will be = used +for the domain. Otherwise, the value specified by the `nr_spis` parameter = will +be used. + +=3Dback + =3Dhead3 x86 =20 =3Dover 4 diff --git a/tools/golang/xenlight/helpers.gen.go b/tools/golang/xenlight/h= elpers.gen.go index b9cb5b33c7..fe5110474d 100644 --- a/tools/golang/xenlight/helpers.gen.go +++ b/tools/golang/xenlight/helpers.gen.go @@ -1154,6 +1154,7 @@ return fmt.Errorf("invalid union key '%v'", x.Type)} x.ArchArm.GicVersion =3D GicVersion(xc.arch_arm.gic_version) x.ArchArm.Vuart =3D VuartType(xc.arch_arm.vuart) x.ArchArm.SveVl =3D SveType(xc.arch_arm.sve_vl) +x.ArchArm.NrSpis =3D uint32(xc.arch_arm.nr_spis) if err :=3D x.ArchX86.MsrRelaxed.fromC(&xc.arch_x86.msr_relaxed);err !=3D = nil { return fmt.Errorf("converting field ArchX86.MsrRelaxed: %v", err) } @@ -1670,6 +1671,7 @@ return fmt.Errorf("invalid union key '%v'", x.Type)} xc.arch_arm.gic_version =3D C.libxl_gic_version(x.ArchArm.GicVersion) xc.arch_arm.vuart =3D C.libxl_vuart_type(x.ArchArm.Vuart) xc.arch_arm.sve_vl =3D C.libxl_sve_type(x.ArchArm.SveVl) +xc.arch_arm.nr_spis =3D C.uint32_t(x.ArchArm.NrSpis) if err :=3D x.ArchX86.MsrRelaxed.toC(&xc.arch_x86.msr_relaxed); err !=3D n= il { return fmt.Errorf("converting field ArchX86.MsrRelaxed: %v", err) } diff --git a/tools/golang/xenlight/types.gen.go b/tools/golang/xenlight/typ= es.gen.go index 5b293755d7..c9e45b306f 100644 --- a/tools/golang/xenlight/types.gen.go +++ b/tools/golang/xenlight/types.gen.go @@ -597,6 +597,7 @@ ArchArm struct { GicVersion GicVersion Vuart VuartType SveVl SveType +NrSpis uint32 } ArchX86 struct { MsrRelaxed Defbool diff --git a/tools/libs/light/libxl_arm.c b/tools/libs/light/libxl_arm.c index 1cb89fa584..a4029e3ac8 100644 --- a/tools/libs/light/libxl_arm.c +++ b/tools/libs/light/libxl_arm.c @@ -181,8 +181,8 @@ int libxl__arch_domain_prepare_config(libxl__gc *gc, =20 LOG(DEBUG, "Configure the domain"); =20 - config->arch.nr_spis =3D nr_spis; - LOG(DEBUG, " - Allocate %u SPIs", nr_spis); + config->arch.nr_spis =3D max(nr_spis, d_config->b_info.arch_arm.nr_spi= s); + LOG(DEBUG, " - Allocate %u SPIs", config->arch.nr_spis); =20 switch (d_config->b_info.arch_arm.gic_version) { case LIBXL_GIC_VERSION_DEFAULT: diff --git a/tools/libs/light/libxl_types.idl b/tools/libs/light/libxl_type= s.idl index 79e9c656cc..4e65e6fda5 100644 --- a/tools/libs/light/libxl_types.idl +++ b/tools/libs/light/libxl_types.idl @@ -722,6 +722,7 @@ libxl_domain_build_info =3D Struct("domain_build_info",[ ("arch_arm", Struct(None, [("gic_version", libxl_gic_version), ("vuart", libxl_vuart_type), ("sve_vl", libxl_sve_type), + ("nr_spis", uint32), ])), ("arch_x86", Struct(None, [("msr_relaxed", libxl_defbool), ])), diff --git a/tools/xl/xl_parse.c b/tools/xl/xl_parse.c index c504ab3711..e3a4800f6e 100644 --- a/tools/xl/xl_parse.c +++ b/tools/xl/xl_parse.c @@ -2935,6 +2935,9 @@ skip_usbdev: } } =20 + if (!xlu_cfg_get_long (config, "nr_spis", &l, 0)) + b_info->arch_arm.nr_spis =3D l; + parse_vkb_list(config, d_config); =20 d_config->virtios =3D NULL; --=20 2.34.1