[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [PATCH] x86: fix UP build with gcc14
On 04.09.2024 12:24, Andrew Cooper wrote: > On 04/09/2024 11:15 am, Jan Beulich wrote: >> The complaint is: >> >> In file included from ././include/xen/config.h:17, >> from <command-line>: >> arch/x86/smpboot.c: In function ‘link_thread_siblings.constprop’: >> ./include/asm-generic/percpu.h:16:51: error: array subscript [0, 0] is >> outside array bounds of ‘long unsigned int[1]’ [-Werror=array-bounds=] >> 16 | (*RELOC_HIDE(&per_cpu__##var, __per_cpu_offset[cpu])) >> ./include/xen/compiler.h:140:29: note: in definition of macro ‘RELOC_HIDE’ >> 140 | (typeof(ptr)) (__ptr + (off)); }) >> | ^~~ >> arch/x86/smpboot.c:238:27: note: in expansion of macro ‘per_cpu’ >> 238 | cpumask_set_cpu(cpu2, per_cpu(cpu_sibling_mask, cpu1)); >> | ^~~~~~~ >> In file included from ./arch/x86/include/generated/asm/percpu.h:1, >> from ./include/xen/percpu.h:30, >> from ./arch/x86/include/asm/cpuid.h:9, >> from ./arch/x86/include/asm/cpufeature.h:11, >> from ./arch/x86/include/asm/system.h:6, >> from ./include/xen/list.h:11, >> from ./include/xen/mm.h:68, >> from arch/x86/smpboot.c:12: >> ./include/asm-generic/percpu.h:12:22: note: while referencing >> ‘__per_cpu_offset’ >> 12 | extern unsigned long __per_cpu_offset[NR_CPUS]; >> | ^~~~~~~~~~~~~~~~ >> >> Which I consider bogus in the first place ("array subscript [0, 0]" vs a >> 1-element array). Yet taking the experience from 99f942f3d410 ("Arm64: >> adjust __irq_to_desc() to fix build with gcc14") I guessed that >> switching function parameters to unsigned int (which they should have >> been anyway) might help. And voilà ... >> >> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx> > > Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx> Thanks. > Presumably we're going to pick this up very very rarely on RANDCONFIG > now that someone regenerated the Tumbleweed containers ? I expect so, yes. Jan
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