diff options
| author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2015-03-30 16:37:08 +0200 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2015-03-30 16:37:08 +0200 |
| commit | 6e0aa8018f9c676b115b7ca6c20a056fc57c68a9 (patch) | |
| tree | b35393574b48dcc05c99599add7f8b0015de3913 /arch/x86/kernel/apic/apic_numachip.c | |
| parent | 1ff27a3443addb19af609245b218fa510c7d37dd (diff) | |
| parent | e42391cd048809d903291d07f86ed3934ce138e9 (diff) | |
Merge tag 'v4.0-rc6' into drm-intel-next
Backmerge Linux 4.0-rc6 because conflicts are (again) getting out of
hand. To make sure we don't lose any bugfixes from the 4.0-rc5-rc6
flurry of patches we've applied them all to -next too.
Conflicts:
drivers/gpu/drm/i915/intel_display.c
Always take the version from -next, we've already handled all
conflicts with explicit cherrypicking.
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Diffstat (limited to 'arch/x86/kernel/apic/apic_numachip.c')
| -rw-r--r-- | arch/x86/kernel/apic/apic_numachip.c | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/arch/x86/kernel/apic/apic_numachip.c b/arch/x86/kernel/apic/apic_numachip.c index c2fd21fed002..017149cded07 100644 --- a/arch/x86/kernel/apic/apic_numachip.c +++ b/arch/x86/kernel/apic/apic_numachip.c @@ -37,10 +37,12 @@ static const struct apic apic_numachip; static unsigned int get_apic_id(unsigned long x) { unsigned long value; - unsigned int id; + unsigned int id = (x >> 24) & 0xff; - rdmsrl(MSR_FAM10H_NODE_ID, value); - id = ((x >> 24) & 0xffU) | ((value << 2) & 0xff00U); + if (static_cpu_has_safe(X86_FEATURE_NODEID_MSR)) { + rdmsrl(MSR_FAM10H_NODE_ID, value); + id |= (value << 2) & 0xff00; + } return id; } @@ -155,10 +157,18 @@ static int __init numachip_probe(void) static void fixup_cpu_id(struct cpuinfo_x86 *c, int node) { - if (c->phys_proc_id != node) { - c->phys_proc_id = node; - per_cpu(cpu_llc_id, smp_processor_id()) = node; + u64 val; + u32 nodes = 1; + + this_cpu_write(cpu_llc_id, node); + + /* Account for nodes per socket in multi-core-module processors */ + if (static_cpu_has_safe(X86_FEATURE_NODEID_MSR)) { + rdmsrl(MSR_FAM10H_NODE_ID, val); + nodes = ((val >> 3) & 7) + 1; } + + c->phys_proc_id = node / nodes; } static int __init numachip_system_init(void) |