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authorLinus Torvalds <torvalds@linux-foundation.org>2022-03-31 21:43:01 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2022-03-31 21:43:01 +0300
commitf87cbd0565eb7e2fa15296c74210658db1346431 (patch)
treeb71ab11be7a27c741a0d7a6f32897691847e9971 /arch
parent2975dbdc3989cd66a4cb5a7c5510de2de8ee4d14 (diff)
parent229a08a4f4e4f9949801cc39b6480ddc9c487183 (diff)
downloadlinux-f87cbd0565eb7e2fa15296c74210658db1346431.tar.xz
Merge tag 'hardening-v5.18-rc1-fix1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull hardening updates from Kees Cook: "This addresses an -Warray-bounds warning found under a few ARM defconfigs, and disables long-broken HARDENED_USERCOPY_PAGESPAN" * tag 'hardening-v5.18-rc1-fix1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: ARM/dma-mapping: Remove CMA code when not built with CMA usercopy: Disable CONFIG_HARDENED_USERCOPY_PAGESPAN
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/mm/dma-mapping.c2
-rw-r--r--arch/arm/mm/mm.h4
2 files changed, 6 insertions, 0 deletions
diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
index 4b61541853ea..82ffac621854 100644
--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -381,6 +381,7 @@ out:
*/
postcore_initcall(atomic_pool_init);
+#ifdef CONFIG_CMA_AREAS
struct dma_contig_early_reserve {
phys_addr_t base;
unsigned long size;
@@ -435,6 +436,7 @@ void __init dma_contiguous_remap(void)
iotable_init(&map, 1);
}
}
+#endif
static int __dma_update_pte(pte_t *pte, unsigned long addr, void *data)
{
diff --git a/arch/arm/mm/mm.h b/arch/arm/mm/mm.h
index 9ff683612f2a..d7ffccb7fea7 100644
--- a/arch/arm/mm/mm.h
+++ b/arch/arm/mm/mm.h
@@ -88,6 +88,10 @@ extern phys_addr_t arm_lowmem_limit;
void __init bootmem_init(void);
void arm_mm_memblock_reserve(void);
+#ifdef CONFIG_CMA_AREAS
void dma_contiguous_remap(void);
+#else
+static inline void dma_contiguous_remap(void) { }
+#endif
unsigned long __clear_cr(unsigned long mask);