diff options
| author | Krishnamoorthi M <krishnamoorthi.m@amd.com> | 2026-05-08 00:39:26 +0530 |
|---|---|---|
| committer | Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> | 2026-05-19 13:42:04 +0300 |
| commit | 4339fa4fae057c99cbcfd8127769219feb14964b (patch) | |
| tree | 264b8f3ce5eda95c55c30781c4ac358e50e85636 | |
| parent | 5809de26ccab13c18d591e923acbab5edebbf283 (diff) | |
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 <krishnamoorthi.m@amd.com>
Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>
Reviewed-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Link: https://patch.msgid.link/20260507190926.1211726-1-krishnamoorthi.m@amd.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
| -rw-r--r-- | drivers/platform/x86/amd/hfi/hfi.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/platform/x86/amd/hfi/hfi.c b/drivers/platform/x86/amd/hfi/hfi.c index 83863a5e0fbc..e0ebcb0c4acd 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; |