The following commit has been merged into the x86/core branch of tip: Commit-ID: d99d0dea2fabf3f7538dd3a19b43b9aea4468037 Gitweb: https://git.kernel.org/tip/d99d0dea2fabf3f7538dd3a19b43b9aea4468037 Author: Uros Bizjak <ubizjak@xxxxxxxxx> AuthorDate: Tue, 04 Mar 2025 18:34:36 +01:00 Committer: Ingo Molnar <mingo@xxxxxxxxxx> CommitterDate: Tue, 04 Mar 2025 20:18:02 +01:00 x86/percpu: Fix __per_cpu_hot_end marker Make __per_cpu_hot_end marker point to the end of the percpu cache hot data, not to the end of the percpu cache hot section. This fixes CONFIG_MPENTIUM4 case where X86_L1_CACHE_SHIFT is set to 7 (128 bytes). Also update assert message accordingly. Reported-by: Ingo Molnar <mingo@xxxxxxxxxx> Signed-off-by: Uros Bizjak <ubizjak@xxxxxxxxx> Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx> Cc: Brian Gerst <brgerst@xxxxxxxxx> Link: https://lore.kernel.org/r/20250304173455.89361-1-ubizjak@xxxxxxxxx Closes: https://lore.kernel.org/lkml/Z8a-NVJs-pm5W-mG@xxxxxxxxx/ --- arch/x86/kernel/vmlinux.lds.S | 2 +- include/asm-generic/vmlinux.lds.h | 3 +-- 2 files changed, 2 insertions(+), 3 deletions(-) diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S index 31f9102..ccdc45e 100644 --- a/arch/x86/kernel/vmlinux.lds.S +++ b/arch/x86/kernel/vmlinux.lds.S @@ -331,7 +331,7 @@ SECTIONS } PERCPU_SECTION(L1_CACHE_BYTES) - ASSERT(__per_cpu_hot_end - __per_cpu_hot_start <= 64, "percpu cache hot section too large") + ASSERT(__per_cpu_hot_end - __per_cpu_hot_start <= 64, "percpu cache hot data too large") RUNTIME_CONST_VARIABLES RUNTIME_CONST(ptr, USER_PTR_MAX) diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h index c4e8fac..4925441 100644 --- a/include/asm-generic/vmlinux.lds.h +++ b/include/asm-generic/vmlinux.lds.h @@ -1072,9 +1072,8 @@ defined(CONFIG_AUTOFDO_CLANG) || defined(CONFIG_PROPELLER_CLANG) . = ALIGN(cacheline); \ __per_cpu_hot_start = .; \ *(SORT_BY_ALIGNMENT(.data..percpu..hot.*)) \ - __per_cpu_hot_pad = .; \ - . = ALIGN(cacheline); \ __per_cpu_hot_end = .; \ + . = ALIGN(cacheline); \ *(.data..percpu..read_mostly) \ . = ALIGN(cacheline); \ *(.data..percpu) \
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