6.6-stable review patch. If anyone has any objections, please let me know.
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From: Baoquan He bhe@redhat.com
[ Upstream commit ac88ff6b9d7dea9f0907c86bdae204dde7d5c0e6 ]
When below config items are set, compiler complained:
-------------------- CONFIG_CRASH_CORE=y CONFIG_KEXEC_CORE=y CONFIG_CRASH_DUMP=y ...... -----------------------
------------------------------------------------------------------- arch/riscv/kernel/crash_core.c: In function 'arch_crash_save_vmcoreinfo': arch/riscv/kernel/crash_core.c:11:58: warning: format '%lx' expects argument of type 'long unsigned int', but argument 2 has type 'int' [-Wformat=] 11 | vmcoreinfo_append_str("NUMBER(VMALLOC_START)=0x%lx\n", VMALLOC_START); | ~~^ | | | long unsigned int | %x ----------------------------------------------------------------------
This is because on riscv macro VMALLOC_START has different type when CONFIG_MMU is set or unset.
arch/riscv/include/asm/pgtable.h: --------------------------------------------------
Changing it to _AC(0, UL) in case CONFIG_MMU=n can fix the warning.
Link: https://lkml.kernel.org/r/ZW7OsX4zQRA3mO4+@MiWiFi-R3L-srv Signed-off-by: Baoquan He bhe@redhat.com Reported-by: Randy Dunlap rdunlap@infradead.org Acked-by: Randy Dunlap rdunlap@infradead.org Tested-by: Randy Dunlap rdunlap@infradead.org # build-tested Cc: Eric DeVolder eric_devolder@yahoo.com Cc: Ignat Korchagin ignat@cloudflare.com Cc: Stephen Rothwell sfr@canb.auug.org.au Cc: Paul Walmsley paul.walmsley@sifive.com Cc: Palmer Dabbelt palmer@dabbelt.com Cc: Albert Ou aou@eecs.berkeley.edu Signed-off-by: Andrew Morton akpm@linux-foundation.org Stable-dep-of: 6065e736f82c ("riscv: Fix TASK_SIZE on 64-bit NOMMU") Signed-off-by: Sasha Levin sashal@kernel.org --- arch/riscv/include/asm/pgtable.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgtable.h index 2793304bf1b76..eaa54a3a16212 100644 --- a/arch/riscv/include/asm/pgtable.h +++ b/arch/riscv/include/asm/pgtable.h @@ -904,7 +904,7 @@ static inline pte_t pte_swp_clear_exclusive(pte_t pte) #define PAGE_KERNEL __pgprot(0) #define swapper_pg_dir NULL #define TASK_SIZE 0xffffffffUL -#define VMALLOC_START 0 +#define VMALLOC_START _AC(0, UL) #define VMALLOC_END TASK_SIZE
#endif /* !CONFIG_MMU */