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authorChristoph Hellwig <hch@lst.de>2019-05-14 02:18:37 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2019-05-14 18:47:47 +0200
commitf94f7434cbbb02f7eb55ed5ad66284023c47968f (patch)
tree73283bb6c218fdf2ff15d9e1a6b771f3b7caf18a /arch/sparc/mm
parentinitramfs: provide a generic free_initrd_mem implementation (diff)
downloadlinux-f94f7434cbbb02f7eb55ed5ad66284023c47968f.tar.xz
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initramfs: poison freed initrd memory
Various architectures including x86 poison the freed initrd memory. Do the same in the generic free_initrd_mem implementation and switch a few more architectures that are identical to the generic code over to it now. Link: http://lkml.kernel.org/r/20190213174621.29297-9-hch@lst.de Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Mike Rapoport <rppt@linux.ibm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> [arm64] Cc: Geert Uytterhoeven <geert@linux-m68k.org> [m68k] Cc: Steven Price <steven.price@arm.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Guan Xuetao <gxt@pku.edu.cn> Cc: Russell King <linux@armlinux.org.uk> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/sparc/mm')
-rw-r--r--arch/sparc/mm/init_32.c8
-rw-r--r--arch/sparc/mm/init_64.c8
2 files changed, 0 insertions, 16 deletions
diff --git a/arch/sparc/mm/init_32.c b/arch/sparc/mm/init_32.c
index a8ff29821bdb..417f89d5e0b2 100644
--- a/arch/sparc/mm/init_32.c
+++ b/arch/sparc/mm/init_32.c
@@ -299,14 +299,6 @@ void free_initmem (void)
free_initmem_default(POISON_FREE_INITMEM);
}
-#ifdef CONFIG_BLK_DEV_INITRD
-void free_initrd_mem(unsigned long start, unsigned long end)
-{
- free_reserved_area((void *)start, (void *)end, POISON_FREE_INITMEM,
- "initrd");
-}
-#endif
-
void sparc_flush_page_to_ram(struct page *page)
{
unsigned long vaddr = (unsigned long)page_address(page);
diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c
index bc2aaa47bc8a..4b099dd7a767 100644
--- a/arch/sparc/mm/init_64.c
+++ b/arch/sparc/mm/init_64.c
@@ -2572,14 +2572,6 @@ void free_initmem(void)
}
}
-#ifdef CONFIG_BLK_DEV_INITRD
-void free_initrd_mem(unsigned long start, unsigned long end)
-{
- free_reserved_area((void *)start, (void *)end, POISON_FREE_INITMEM,
- "initrd");
-}
-#endif
-
pgprot_t PAGE_KERNEL __read_mostly;
EXPORT_SYMBOL(PAGE_KERNEL);