From: Krishnamoorthi M Date: Thu, 7 May 2026 19:09:26 +0000 (+0530) Subject: platform/x86/amd: hfi: Support for ranking table versions X-Git-Url: http://git.ipfire.org/gitweb/index.cgi?a=commitdiff_plain;h=4339fa4fae057c99cbcfd8127769219feb14964b;p=thirdparty%2Flinux.git platform/x86/amd: hfi: Support for ranking table versions Add changes to support new ranking table version. Version 2 of the heterogeneous ranking table provides static CPU rankings. Version 3 adds dynamic ranking table support on newer AMD platforms. These changes ensure that platforms still reporting version 2 continue to function with the existing static ranking path, avoiding regressions on older hardware that does not supply a dynamic ranking table. Signed-off-by: Krishnamoorthi M Reviewed-by: Mario Limonciello (AMD) Reviewed-by: Shyam Sundar S K Link: https://patch.msgid.link/20260507190926.1211726-1-krishnamoorthi.m@amd.com Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen --- diff --git a/drivers/platform/x86/amd/hfi/hfi.c b/drivers/platform/x86/amd/hfi/hfi.c index 83863a5e0fbc6..e0ebcb0c4acde 100644 --- a/drivers/platform/x86/amd/hfi/hfi.c +++ b/drivers/platform/x86/amd/hfi/hfi.c @@ -33,7 +33,8 @@ #define AMD_HFI_DRIVER "amd_hfi" #define AMD_HFI_MAILBOX_COUNT 1 -#define AMD_HETERO_RANKING_TABLE_VER 2 +#define AMD_HETERO_RANKING_TABLE_MIN_VER 2 +#define AMD_HETERO_RANKING_TABLE_MAX_VER 3 #define AMD_HETERO_CPUID_27 0x80000027 @@ -158,7 +159,8 @@ static int amd_hfi_fill_metadata(struct amd_hfi_data *amd_hfi_data) dev_err(amd_hfi_data->dev, "invalid signature in shared memory\n"); return -EINVAL; } - if (amd_hfi_data->shmem->version_number != AMD_HETERO_RANKING_TABLE_VER) { + if (amd_hfi_data->shmem->version_number < AMD_HETERO_RANKING_TABLE_MIN_VER || + amd_hfi_data->shmem->version_number > AMD_HETERO_RANKING_TABLE_MAX_VER) { dev_err(amd_hfi_data->dev, "invalid version %d\n", amd_hfi_data->shmem->version_number); return -EINVAL;