diff options
| author | Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> | 2016-10-17 15:18:48 +0100 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2016-10-17 15:49:23 +0100 |
| commit | baa5567c18d17843815d1d9150424d31f238e363 (patch) | |
| tree | bee1fe079c2aeb4748c0811964a96d0f533c7a12 /arch | |
| parent | 9c0e83c371cf4696926c95f9c8c77cd6ea803426 (diff) | |
| download | linux-baa5567c18d17843815d1d9150424d31f238e363.tar.bz2 | |
arm64: kernel: numa: fix ACPI boot cpu numa node mapping
Commit 7ba5f605f3a0 ("arm64/numa: remove the limitation that cpu0 must
bind to node0") removed the numa cpu<->node mapping restriction whereby
logical cpu 0 always corresponds to numa node 0; removing the
restriction was correct, in that it does not really exist in practice
but the commit only updated the early mapping of logical cpu 0 to its
real numa node for the DT boot path, missing the ACPI one, leading to
boot failures on ACPI systems owing to missing node<->cpu map for
logical cpu 0.
Fix the issue by updating the ACPI boot path with code that carries out
the early cpu<->node mapping also for the boot cpu (ie cpu 0), mirroring
what is currently done in the DT boot path.
Fixes: 7ba5f605f3a0 ("arm64/numa: remove the limitation that cpu0 must bind to node0")
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Tested-by: Laszlo Ersek <lersek@redhat.com>
Reported-by: Laszlo Ersek <lersek@redhat.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Hanjun Guo <hanjun.guo@linaro.org>
Cc: Andrew Jones <drjones@redhat.com>
Cc: Zhen Lei <thunder.leizhen@huawei.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm64/kernel/smp.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm64/kernel/smp.c b/arch/arm64/kernel/smp.c index d3f151cfd4a1..8507703dabe4 100644 --- a/arch/arm64/kernel/smp.c +++ b/arch/arm64/kernel/smp.c @@ -544,6 +544,7 @@ acpi_map_gic_cpu_interface(struct acpi_madt_generic_interrupt *processor) return; } bootcpu_valid = true; + early_map_cpu_to_node(0, acpi_numa_get_nid(0, hwid)); return; } |