diff options
| author | Len Brown <len.brown@intel.com> | 2019-05-13 13:58:45 -0400 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2019-05-23 10:08:30 +0200 |
| commit | 7745f03eb39587dd15a1fb26e6223678b8e906d2 (patch) | |
| tree | 77b80b9f708902fe88699b05a3da830cb70b0c91 /arch/x86/include/asm/processor.h | |
| parent | a188339ca5a396acc588e5851ed7e19f66b0ebd9 (diff) | |
x86/topology: Add CPUID.1F multi-die/package support
Some new systems have multiple software-visible die within each package.
Update Linux parsing of the Intel CPUID "Extended Topology Leaf" to handle
either CPUID.B, or the new CPUID.1F.
Add cpuinfo_x86.die_id and cpuinfo_x86.max_dies to store the result.
die_id will be non-zero only for multi-die/package systems.
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: linux-doc@vger.kernel.org
Link: https://lkml.kernel.org/r/7b23d2d26d717b8e14ba137c94b70943f1ae4b5c.1557769318.git.len.brown@intel.com
Diffstat (limited to 'arch/x86/include/asm/processor.h')
| -rw-r--r-- | arch/x86/include/asm/processor.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h index c34a35c78618..ef0a44fccaec 100644 --- a/arch/x86/include/asm/processor.h +++ b/arch/x86/include/asm/processor.h @@ -105,7 +105,8 @@ struct cpuinfo_x86 { int x86_power; unsigned long loops_per_jiffy; /* cpuid returned max cores value: */ - u16 x86_max_cores; + u16 x86_max_cores; + u16 x86_max_dies; u16 apicid; u16 initial_apicid; u16 x86_clflush_size; @@ -117,6 +118,7 @@ struct cpuinfo_x86 { u16 logical_proc_id; /* Core id: */ u16 cpu_core_id; + u16 cpu_die_id; /* Index into per_cpu list: */ u16 cpu_index; u32 microcode; |