From 4339fa4fae057c99cbcfd8127769219feb14964b Mon Sep 17 00:00:00 2001 From: Krishnamoorthi M Date: Fri, 8 May 2026 00:39:26 +0530 Subject: [PATCH] platform/x86/amd: hfi: Support for ranking table versions MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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 --- drivers/platform/x86/amd/hfi/hfi.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) 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; -- 2.47.3