Commit-ID: 72edfe950b36308353e27cdc02f334431239938a
Gitweb: http://git.kernel.org/tip/72edfe950b36308353e27cdc02f334431239938a
Author: Borislav Petkov <bp@xxxxxxx>
AuthorDate: Fri, 20 Jan 2017 21:29:53 +0100
Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitDate: Mon, 23 Jan 2017 10:02:50 +0100
x86/microcode/AMD: Simplify saving from initrd
No need to use the previously stashed info in the container - simply go
ahead and parse the initrd once more. It simplifies and streamlines the
code a whole lot.
Signed-off-by: Borislav Petkov <bp@xxxxxxx>
Reviewed-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Link: http://lkml.kernel.org/r/20170120202955.4091-15-bp@xxxxxxxxx
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
---
arch/x86/kernel/cpu/microcode/amd.c | 43 +++++++++++--------------------------
1 file changed, 13 insertions(+), 30 deletions(-)
diff --git a/arch/x86/kernel/cpu/microcode/amd.c b/arch/x86/kernel/cpu/microcode/amd.c
index fe9e865..2a194e3 100644
--- a/arch/x86/kernel/cpu/microcode/amd.c
+++ b/arch/x86/kernel/cpu/microcode/amd.c
@@ -372,43 +372,26 @@ load_microcode_amd(int cpu, u8 family, const u8 *data, size_t size);
int __init save_microcode_in_initrd_amd(unsigned int cpuid_1_eax)
{
+ struct cont_desc desc = { 0 };
enum ucode_state ret;
- int retval = 0;
-
- if (!cont.data) {
- if (IS_ENABLED(CONFIG_X86_32) && (cont.size != -1)) {
- struct cpio_data cp;
-
- cp = find_microcode_in_initrd(ucode_path, false);
- if (!(cp.data && cp.size)) {
- cont.size = -1;
- return -EINVAL;
- }
+ struct cpio_data cp;
- cont.cpuid_1_eax = cpuid_1_eax;
+ cp = find_microcode_in_initrd(ucode_path, false);
+ if (!(cp.data && cp.size))
+ return -EINVAL;
- scan_containers(cp.data, cp.size, &cont);
- if (!cont.eq_id) {
- cont.size = -1;
- return -EINVAL;
- }
+ desc.cpuid_1_eax = cpuid_1_eax;
- } else
- return -EINVAL;
- }
+ scan_containers(cp.data, cp.size, &desc);
+ if (!desc.eq_id)
+ return -EINVAL;
- ret = load_microcode_amd(smp_processor_id(), x86_family(cpuid_1_eax), cont.data, cont.size);
+ ret = load_microcode_amd(smp_processor_id(), x86_family(cpuid_1_eax),
+ desc.data, desc.size);
if (ret != UCODE_OK)
- retval = -EINVAL;
-
- /*
- * This will be freed any msec now, stash patches for the current
- * family and switch to patch cache for cpu hotplug, etc later.
- */
- cont.data = NULL;
- cont.size = 0;
+ return -EINVAL;
- return retval;
+ return 0;
}
void reload_ucode_amd(void)
--
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