| Message ID | 20171218165059.1401972-1-arnd@arndb.de |
|---|---|
| State | New |
| Headers | show |
| Series | x86/pti: hide unused pti_user_pagetable_walk_pte() function | expand |
diff --git a/arch/x86/mm/pti.c b/arch/x86/mm/pti.c index fa22fdc73172..f7c8913d4daa 100644 --- a/arch/x86/mm/pti.c +++ b/arch/x86/mm/pti.c @@ -192,6 +192,7 @@ static pmd_t *pti_user_pagetable_walk_pmd(unsigned long address) return pmd_offset(pud, address); } +#ifdef CONFIG_X86_VSYSCALL_EMULATION /* * Walk the shadow copy of the page tables (optionally) trying to allocate * page table pages on the way down. Does not support large pages. @@ -233,6 +234,7 @@ static pte_t *pti_user_pagetable_walk_pte(unsigned long address) } return pte; } +#endif static void __init pti_clone_pmds(unsigned long start, unsigned long end, pmdval_t clear)
The new pti_user_pagetable_walk_pte() function is not referenced when CONFIG_X86_VSYSCALL_EMULATION is disabled, so we need to either hide it or make the caller visible to gcc: arch/x86/mm/pti.c:204:15: error: 'pti_user_pagetable_walk_pte' defined but not used [-Werror=unused-function] Fixes: 9d2fdd3ff05d ("x86/pti: Map the vsyscall page if needed") Signed-off-by: Arnd Bergmann <arnd@arndb.de> --- arch/x86/mm/pti.c | 2 ++ 1 file changed, 2 insertions(+) -- 2.9.0