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| author | Brian Gerst <brgerst@gmail.com> | 2025-03-03 11:52:37 -0500 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2025-03-04 20:30:33 +0100 |
| commit | 972f9cdff924ca53715019b63b4d4aed69d23b1e (patch) | |
| tree | 9dff5ed5e93f359e37cfea3af5bc4d9c5bd0e431 /arch/x86/kernel/vmlinux.lds.S | |
| parent | percpu: Introduce percpu hot section (diff) | |
| download | linux-972f9cdff924ca53715019b63b4d4aed69d23b1e.tar.gz linux-972f9cdff924ca53715019b63b4d4aed69d23b1e.zip | |
x86/percpu: Move pcpu_hot to percpu hot section
Also change the alignment of the percpu hot section:
- PERCPU_SECTION(INTERNODE_CACHE_BYTES)
+ PERCPU_SECTION(L1_CACHE_BYTES)
As vSMP will muck with INTERNODE_CACHE_BYTES that invalidates the
too-large-section assert we do:
ASSERT(__per_cpu_hot_end - __per_cpu_hot_start <= 64, "percpu cache hot section too large")
[ mingo: Added INTERNODE_CACHE_BYTES fix & explanation. ]
Signed-off-by: Brian Gerst <brgerst@gmail.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Uros Bizjak <ubizjak@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20250303165246.2175811-3-brgerst@gmail.com
Diffstat (limited to 'arch/x86/kernel/vmlinux.lds.S')
| -rw-r--r-- | arch/x86/kernel/vmlinux.lds.S | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S index 1769a7126224..0ef9870ea52e 100644 --- a/arch/x86/kernel/vmlinux.lds.S +++ b/arch/x86/kernel/vmlinux.lds.S @@ -187,6 +187,8 @@ SECTIONS PAGE_ALIGNED_DATA(PAGE_SIZE) + CACHE_HOT_DATA(L1_CACHE_BYTES) + CACHELINE_ALIGNED_DATA(L1_CACHE_BYTES) DATA_DATA @@ -327,7 +329,8 @@ SECTIONS EXIT_DATA } - PERCPU_SECTION(INTERNODE_CACHE_BYTES) + PERCPU_SECTION(L1_CACHE_BYTES) + ASSERT(__per_cpu_hot_end - __per_cpu_hot_start <= 64, "percpu cache hot section too large") RUNTIME_CONST_VARIABLES RUNTIME_CONST(ptr, USER_PTR_MAX) |