6.6-stable review patch. If anyone has any objections, please let me know.
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From: Nathan Chancellor nathan@kernel.org
commit d5fd042bf4cfb557981d65628e1779a492cd8cfa upstream.
After a recent LLVM change [1] that deduces __cold on functions that only call cold code (such as __init functions), there is a section mismatch warning from __get_mem_config_intel(), which got moved to .text.unlikely. as a result of that optimization:
WARNING: modpost: vmlinux: section mismatch in reference: \ __get_mem_config_intel+0x77 (section: .text.unlikely.) -> thread_throttle_mode_init (section: .init.text)
Mark __get_mem_config_intel() as __init as well since it is only called from __init code, which clears up the warning.
While __rdt_get_mem_config_amd() does not exhibit a warning because it does not call any __init code, it is a similar function that is only called from __init code like __get_mem_config_intel(), so mark it __init as well to keep the code symmetrical.
CONFIG_SECTION_MISMATCH_WARN_ONLY=n would turn this into a fatal error.
Fixes: 05b93417ce5b ("x86/intel_rdt/mba: Add primary support for Memory Bandwidth Allocation (MBA)") Fixes: 4d05bf71f157 ("x86/resctrl: Introduce AMD QOS feature") Signed-off-by: Nathan Chancellor nathan@kernel.org Signed-off-by: Borislav Petkov (AMD) bp@alien8.de Reviewed-by: Reinette Chatre reinette.chatre@intel.com Cc: stable@kernel.org Link: https://github.com/llvm/llvm-project/commit/6b11573b8c5e3d36beee099dbe7347c2... [1] Link: https://lore.kernel.org/r/20240917-x86-restctrl-get_mem_config_intel-init-v3... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/x86/kernel/cpu/resctrl/core.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
--- a/arch/x86/kernel/cpu/resctrl/core.c +++ b/arch/x86/kernel/cpu/resctrl/core.c @@ -193,7 +193,7 @@ static inline bool rdt_get_mb_table(stru return false; }
-static bool __get_mem_config_intel(struct rdt_resource *r) +static __init bool __get_mem_config_intel(struct rdt_resource *r) { struct rdt_hw_resource *hw_res = resctrl_to_arch_res(r); union cpuid_0x10_3_eax eax; @@ -227,7 +227,7 @@ static bool __get_mem_config_intel(struc return true; }
-static bool __rdt_get_mem_config_amd(struct rdt_resource *r) +static __init bool __rdt_get_mem_config_amd(struct rdt_resource *r) { struct rdt_hw_resource *hw_res = resctrl_to_arch_res(r); u32 eax, ebx, ecx, edx, subleaf;