linux.git/arch/x86/kernel/cpu/microcode/amd.c, branch v6.6 Linux kernel source tree x86/microcode: Move core specific defines to local header 2023-08-13T16:42:55+00:00 Thomas Gleixner tglx@linutronix.de 2023-08-12T19:58:47+00:00 d02a0efd0f471a775b9e28ce6593fc8b3cc46e8c There is no reason to expose all of this globally. Move everything which is not required outside of the microcode specific code to local header files and into the respective source files. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Link: https://lore.kernel.org/r/20230812195727.952876381@linutronix.de 
There is no reason to expose all of this globally. Move everything which is
not required outside of the microcode specific code to local header files
and into the respective source files.

No functional change.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/20230812195727.952876381@linutronix.de
x86/microcode: Include vendor headers into microcode.h 2023-08-13T16:42:55+00:00 Ashok Raj ashok.raj@intel.com 2023-08-12T19:58:42+00:00 82ad097b02b6ab7985375b925efd06ac042caf1d Currently vendor specific headers are included explicitly when used in common code. Instead, include the vendor specific headers in microcode.h, and include that in all usages. No functional change. Suggested-by: Boris Petkov <bp@alien8.de> Signed-off-by: Ashok Raj <ashok.raj@intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Link: https://lore.kernel.org/r/20230812195727.776541545@linutronix.de 
Currently vendor specific headers are included explicitly when used in
common code. Instead, include the vendor specific headers in
microcode.h, and include that in all usages.

No functional change.

Suggested-by: Boris Petkov <bp@alien8.de>
Signed-off-by: Ashok Raj <ashok.raj@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/20230812195727.776541545@linutronix.de
x86/microcode/AMD: Rip out static buffers 2023-07-27T08:04:54+00:00 Borislav Petkov (AMD) bp@alien8.de 2023-06-07T19:01:06+00:00 05e91e72113833385fb8c9a33bda9dbd93e27609 Load straight from the containers (initrd or builtin, for example). There's no need to cache the patch per node. This even simplifies the code a bit with the opportunity for more cleanups later. Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Tested-by: John Allen <john.allen@amd.com> Link: https://lore.kernel.org/r/20230720202813.3269888-1-john.allen@amd.com 
Load straight from the containers (initrd or builtin, for example).
There's no need to cache the patch per node.

This even simplifies the code a bit with the opportunity for more
cleanups later.

Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Tested-by: John Allen <john.allen@amd.com>
Link: https://lore.kernel.org/r/20230720202813.3269888-1-john.allen@amd.com
x86/microcode/AMD: Load late on both threads too 2023-06-12T09:02:17+00:00 Borislav Petkov (AMD) bp@alien8.de 2023-05-02T17:53:50+00:00 a32b0f0db3f396f1c9be2fe621e77c09ec3d8e7d Do the same as early loading - load on both threads. Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Cc: <stable@kernel.org> Link: https://lore.kernel.org/r/20230605141332.25948-1-bp@alien8.de 
Do the same as early loading - load on both threads.

Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Cc: <stable@kernel.org>
Link: https://lore.kernel.org/r/20230605141332.25948-1-bp@alien8.de
x86/microcode/amd: Remove unneeded pointer arithmetic 2023-05-08T12:38:38+00:00 Nathan Fontenot nathan.fontenot@amd.com 2023-05-02T17:42:32+00:00 e281d5cad1f3924edf1042441b98c25204ae0def Remove unneeded pointer increment arithmetic, the pointer is set at the beginning of the loop. Signed-off-by: Nathan Fontenot <nathan.fontenot@amd.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Link: https://lore.kernel.org/r/20230502174232.73880-1-nathan.fontenot@amd.com 
Remove unneeded pointer increment arithmetic, the pointer is
set at the beginning of the loop.

Signed-off-by: Nathan Fontenot <nathan.fontenot@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/20230502174232.73880-1-nathan.fontenot@amd.com
x86/microcode/AMD: Get rid of __find_equiv_id() 2023-05-08T12:24:11+00:00 Borislav Petkov (AMD) bp@alien8.de 2023-02-27T16:03:52+00:00 37a19366e10b95380bf33e7a8b02509980399d7e Merge it into its only call site. No functional changes. Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Link: https://lore.kernel.org/r/20230227160352.7260-1-bp@alien8.de 
Merge it into its only call site.

No functional changes.

Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/20230227160352.7260-1-bp@alien8.de
docs: move x86 documentation into Documentation/arch/ 2023-03-30T18:58:51+00:00 Jonathan Corbet corbet@lwn.net 2023-03-14T23:06:44+00:00 ff61f0791ce969d2db6c9f3b71d74ceec0a2e958 Move the x86 documentation under Documentation/arch/ as a way of cleaning up the top-level directory and making the structure of our docs more closely match the structure of the source directories it describes. All in-kernel references to the old paths have been updated. Acked-by: Dave Hansen <dave.hansen@linux.intel.com> Cc: linux-arch@vger.kernel.org Cc: x86@kernel.org Cc: Borislav Petkov <bp@alien8.de> Cc: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/lkml/20230315211523.108836-1-corbet@lwn.net/ Signed-off-by: Jonathan Corbet <corbet@lwn.net> 
Move the x86 documentation under Documentation/arch/ as a way of cleaning
up the top-level directory and making the structure of our docs more
closely match the structure of the source directories it describes.

All in-kernel references to the old paths have been updated.

Acked-by: Dave Hansen <dave.hansen@linux.intel.com>
Cc: linux-arch@vger.kernel.org
Cc: x86@kernel.org
Cc: Borislav Petkov <bp@alien8.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/lkml/20230315211523.108836-1-corbet@lwn.net/
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
x86/microcode/AMD: Fix mixed steppings support 2023-02-06T12:40:16+00:00 Borislav Petkov (AMD) bp@alien8.de 2023-01-26T15:26:17+00:00 7ff6edf4fef38ab404ee7861f257e28eaaeed35f The AMD side of the loader has always claimed to support mixed steppings. But somewhere along the way, it broke that by assuming that the cached patch blob is a single one instead of it being one per *node*. So turn it into a per-node one so that each node can stash the blob relevant for it. [ NB: Fixes tag is not really the exactly correct one but it is good enough. ] Fixes: fe055896c040 ("x86/microcode: Merge the early microcode loader") Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Cc: <stable@kernel.org> # 2355370cd941 ("x86/microcode/amd: Remove load_microcode_amd()'s bsp parameter") Cc: <stable@kernel.org> # a5ad92134bd1 ("x86/microcode/AMD: Add a @cpu parameter to the reloading functions") Link: https://lore.kernel.org/r/20230130161709.11615-4-bp@alien8.de 
The AMD side of the loader has always claimed to support mixed
steppings. But somewhere along the way, it broke that by assuming that
the cached patch blob is a single one instead of it being one per
*node*.

So turn it into a per-node one so that each node can stash the blob
relevant for it.

  [ NB: Fixes tag is not really the exactly correct one but it is good
    enough. ]

Fixes: fe055896c040 ("x86/microcode: Merge the early microcode loader")
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Cc: <stable@kernel.org> # 2355370cd941 ("x86/microcode/amd: Remove load_microcode_amd()'s bsp parameter")
Cc: <stable@kernel.org> # a5ad92134bd1 ("x86/microcode/AMD: Add a @cpu parameter to the reloading functions")
Link: https://lore.kernel.org/r/20230130161709.11615-4-bp@alien8.de
x86/microcode/AMD: Add a @cpu parameter to the reloading functions 2023-02-06T11:14:20+00:00 Borislav Petkov (AMD) bp@alien8.de 2023-01-25T23:08:03+00:00 a5ad92134bd153a9ccdcddf09a95b088f36c3cce Will be used in a subsequent change. Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Link: https://lore.kernel.org/r/20230130161709.11615-3-bp@alien8.de 
Will be used in a subsequent change.

Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/20230130161709.11615-3-bp@alien8.de
x86/microcode/amd: Remove load_microcode_amd()'s bsp parameter 2023-02-06T10:13:04+00:00 Borislav Petkov (AMD) bp@alien8.de 2023-01-17T22:59:24+00:00 2355370cd941cbb20882cc3f34460f9f2b8f9a18 It is always the BSP. No functional changes. Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Link: https://lore.kernel.org/r/20230130161709.11615-2-bp@alien8.de 
It is always the BSP.

No functional changes.

Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/20230130161709.11615-2-bp@alien8.de