kernel.git/drivers/platform/x86/amd/pmf, branch linux-6.17.y

platform/x86/amd/pmf: Fix the custom bios input handling mechanism

2025-11-13T20:37:19Z

[ Upstream commit d82e3d2dd0ba019ac6cdd81e47bf4c8ac895cfa0 ] Originally, the 'amd_pmf_get_custom_bios_inputs()' function was written under the assumption that the BIOS would only send a single pending request for the driver to process. However, following OEM enablement, it became clear that multiple pending requests for custom BIOS inputs might be sent at the same time, a scenario that the current code logic does not support when it comes to handling multiple custom BIOS inputs. To address this, the code logic needs to be improved to not only manage multiple simultaneous custom BIOS inputs but also to ensure it is scalable for future additional inputs. Co-developed-by: Patil Rajesh Reddy Signed-off-by: Patil Rajesh Reddy Tested-by: Yijun Shen Signed-off-by: Shyam Sundar S K Link: https://patch.msgid.link/20250901110140.2519072-3-Shyam-sundar.S-k@amd.com Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen Signed-off-by: Sasha Levin

platform/x86/amd/pmf: Support new ACPI ID AMDI0108

2025-09-16T08:27:42Z

Include the ACPI ID AMDI0108, which is used on upcoming AMD platforms, in the PMF driver's list of supported devices. Signed-off-by: Shyam Sundar S K Reviewed-by: Mario Limonciello (AMD) Link: https://patch.msgid.link/20250915090546.2759130-1-Shyam-sundar.S-k@amd.com Signed-off-by: Ilpo Järvinen

platform/x86/amd: pmf: Simplify error flow in amd_pmf_init_smart_pc()

2025-06-10T07:42:15Z

commit 5b1122fc4995f ("platform/x86/amd/pmf: fix cleanup in amd_pmf_init_smart_pc()") adjusted the error handling flow to use a ladder but this isn't actually needed because work is only scheduled in amd_pmf_start_policy_engine() and with device managed cleanups pointers for allocations don't need to be freed. Adjust the error flow to a single call to amd_pmf_deinit_smart_pc() for the cases that need to clean up. Cc: Dan Carpenter Link: https://lore.kernel.org/r/20250512211154.2510397-4-superm1@kernel.org Signed-off-by: Mario Limonciello Link: https://lore.kernel.org/r/20250522003457.1516679-4-superm1@kernel.org Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen

platform/x86/amd: pmf: Prevent amd_pmf_tee_deinit() from running twice

2025-06-10T07:42:14Z

If any of the tee init fails, pass up the errors and clear the tee_ctx pointer. This will prevent cleaning up multiple times. Fixes: ac052d8c08f9d ("platform/x86/amd/pmf: Add PMF TEE interface") Suggested-by: Dan Carpenter Link: https://lore.kernel.org/r/20250512211154.2510397-3-superm1@kernel.org Signed-off-by: Mario Limonciello Link: https://lore.kernel.org/r/20250522003457.1516679-3-superm1@kernel.org Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen

platform/x86/amd: pmf: Use device managed allocations

2025-06-10T07:42:11Z

If setting up smart PC fails for any reason then this can lead to a double free when unloading amd-pmf. This is because dev->buf was freed but never set to NULL and is again freed in amd_pmf_remove(). To avoid subtle allocation bugs in failures leading to a double free change all allocations into device managed allocations. Fixes: 5b1122fc4995f ("platform/x86/amd/pmf: fix cleanup in amd_pmf_init_smart_pc()") Link: https://lore.kernel.org/r/20250512211154.2510397-2-superm1@kernel.org Signed-off-by: Mario Limonciello Link: https://lore.kernel.org/r/20250522003457.1516679-2-superm1@kernel.org Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen

Merge tag 'v6.15-rc7' into x86/core, to pick up fixes

2025-05-21T06:45:03Z

Pick up build fixes from upstream to make this tree more testable. Signed-off-by: Ingo Molnar

Merge tag 'v6.15-rc5' into x86/cpu, to resolve conflicts

2025-05-06T08:00:58Z

Conflicts: tools/arch/x86/include/asm/cpufeatures.h Signed-off-by: Ingo Molnar

drivers/platform/x86/amd: pmf: Check for invalid Smart PC Policies

2025-04-29T14:47:43Z

commit 376a8c2a14439 ("platform/x86/amd/pmf: Update PMF Driver for Compatibility with new PMF-TA") added support for platforms that support an updated TA, however it also exposed a number of platforms that although they have support for the updated TA don't actually populate a policy binary. Add an explicit check that the policy binary isn't empty before initializing the TA. Reported-by: Christian Heusel Closes: https://lore.kernel.org/platform-driver-x86/ae644428-5bf2-4b30-81ba-0b259ed3449b@heusel.eu/ Fixes: 376a8c2a14439 ("platform/x86/amd/pmf: Update PMF Driver for Compatibility with new PMF-TA") Signed-off-by: Mario Limonciello Tested-by: Christian Heusel Link: https://lore.kernel.org/r/20250423132002.3984997-3-superm1@kernel.org Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen

drivers/platform/x86/amd: pmf: Check for invalid sideloaded Smart PC Policies

2025-04-29T14:47:41Z

If a policy is passed into amd_pmf_get_pb_data() that causes the engine to fail to start there is a memory leak. Free the memory in this failure path. Fixes: 10817f28e5337 ("platform/x86/amd/pmf: Add capability to sideload of policy binary") Signed-off-by: Mario Limonciello Link: https://lore.kernel.org/r/20250423132002.3984997-2-superm1@kernel.org Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen

x86/platform/amd: Move the header to

2025-04-14T07:34:17Z

Collect AMD specific platform header files in . Signed-off-by: Ingo Molnar Acked-by: Borislav Petkov (AMD) Cc: H. Peter Anvin Cc: Linus Torvalds Cc: Mario Limonciello Link: https://lore.kernel.org/r/20250413084144.3746608-7-mingo@kernel.org