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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 21 Apr 2025 22:44:26.5033 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 82960449-8af8-441c-6eb0-08dd812611e5 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=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BN3PEPF0000B36D.namprd21.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS0PR12MB6389 Content-Type: text/plain; charset="utf-8" Add the command line options to enable or disable the new resctrl feature L3 Smart Data Cache Injection Allocation Enforcement (SDCIAE). Signed-off-by: Babu Moger --- v4: No changes. v3: No changes. v2: No changes. --- Documentation/admin-guide/kernel-parameters.txt | 2 +- arch/x86/kernel/cpu/resctrl/core.c | 2 ++ 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentatio= n/admin-guide/kernel-parameters.txt index 76e538c77e31..5e5abc270f91 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -5991,7 +5991,7 @@ rdt=3D [HW,X86,RDT] Turn on/off individual RDT features. List is: cmt, mbmtotal, mbmlocal, l3cat, l3cdp, l2cat, l2cdp, - mba, smba, bmec. + mba, smba, bmec, sdciae. E.g. to turn on cmt and turn off mba use: rdt=3Dcmt,!mba =20 diff --git a/arch/x86/kernel/cpu/resctrl/core.c b/arch/x86/kernel/cpu/resct= rl/core.c index cf29681d01e0..422083dc4651 100644 --- a/arch/x86/kernel/cpu/resctrl/core.c +++ b/arch/x86/kernel/cpu/resctrl/core.c @@ -723,6 +723,7 @@ enum { RDT_FLAG_MBA, RDT_FLAG_SMBA, RDT_FLAG_BMEC, + RDT_FLAG_SDCIAE, }; =20 #define RDT_OPT(idx, n, f) \ @@ -748,6 +749,7 @@ static struct rdt_options rdt_options[] __initdata =3D= { RDT_OPT(RDT_FLAG_MBA, "mba", X86_FEATURE_MBA), RDT_OPT(RDT_FLAG_SMBA, "smba", X86_FEATURE_SMBA), RDT_OPT(RDT_FLAG_BMEC, "bmec", X86_FEATURE_BMEC), + RDT_OPT(RDT_FLAG_SDCIAE, "sdciae", X86_FEATURE_SDCIAE), }; #define NUM_RDT_OPTIONS ARRAY_SIZE(rdt_options) =20 --=20 2.34.1