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authorIngo Molnar <mingo@kernel.org>2019-02-11 08:00:26 +0100
committerIngo Molnar <mingo@kernel.org>2019-02-11 08:00:26 +0100
commitf26d9db21bf9b5dbfe17a5bc3bdf4ca6c961c924 (patch)
tree6c9dadc987c86b234ce31774f466b0ee60bbdc45 /arch/x86/include/asm
parent6854daa07a29b0e27f7017fe23a24e595d1f7617 (diff)
parent0f42b790c9ba5ec2f25b7da8b0b6d361082d67b0 (diff)
downloadlinux-0-day-f26d9db21bf9b5dbfe17a5bc3bdf4ca6c961c924.tar.gz
linux-0-day-f26d9db21bf9b5dbfe17a5bc3bdf4ca6c961c924.tar.xz
Merge branch 'x86/cpu' into perf/core, to pick up dependent commit
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/include/asm')
-rw-r--r--arch/x86/include/asm/cpu_device_id.h28
1 files changed, 28 insertions, 0 deletions
diff --git a/arch/x86/include/asm/cpu_device_id.h b/arch/x86/include/asm/cpu_device_id.h
index baeba0567126..3417110574c1 100644
--- a/arch/x86/include/asm/cpu_device_id.h
+++ b/arch/x86/include/asm/cpu_device_id.h
@@ -11,4 +11,32 @@
extern const struct x86_cpu_id *x86_match_cpu(const struct x86_cpu_id *match);
+/*
+ * Match specific microcode revisions.
+ *
+ * vendor/family/model/stepping must be all set.
+ *
+ * Only checks against the boot CPU. When mixed-stepping configs are
+ * valid for a CPU model, add a quirk for every valid stepping and
+ * do the fine-tuning in the quirk handler.
+ */
+
+struct x86_cpu_desc {
+ __u8 x86_family;
+ __u8 x86_vendor;
+ __u8 x86_model;
+ __u8 x86_stepping;
+ __u32 x86_microcode_rev;
+};
+
+#define INTEL_CPU_DESC(mod, step, rev) { \
+ .x86_family = 6, \
+ .x86_vendor = X86_VENDOR_INTEL, \
+ .x86_model = mod, \
+ .x86_stepping = step, \
+ .x86_microcode_rev = rev, \
+}
+
+extern bool x86_cpu_has_min_microcode_rev(const struct x86_cpu_desc *table);
+
#endif