提交 8b0d3121 编写于 作者: S Sebastian Siewior 提交者: Paul Mackerras

[POWERPC] spufs: Make isolated loader properly aligned

According to the comment in spufs_init_isolated_loader(), the isolated
loader should be aligned on a 16 byte boundary.
ARCH_{KMALLOC,SLAB}_MINALIGN is not defined so only 8 byte alignment is
guaranteed.

This enforces alignment via __get_free_pages.
Signed-off-by: NSebastian Siewior <sebastian@breakpoint.cc>
Signed-off-by: NJeremy Kerr <jk@ozlabs.org>
Signed-off-by: NPaul Mackerras <paulus@samba.org>
上级 6232a74f
......@@ -43,6 +43,7 @@
static struct kmem_cache *spufs_inode_cache;
char *isolated_loader;
static int isolated_loader_size;
static struct inode *
spufs_alloc_inode(struct super_block *sb)
......@@ -667,7 +668,8 @@ spufs_parse_options(char *options, struct inode *root)
static void spufs_exit_isolated_loader(void)
{
kfree(isolated_loader);
free_pages((unsigned long) isolated_loader,
get_order(isolated_loader_size));
}
static void
......@@ -685,11 +687,12 @@ spufs_init_isolated_loader(void)
if (!loader)
return;
/* kmalloc should align on a 16 byte boundary..* */
isolated_loader = kmalloc(size, GFP_KERNEL);
/* the loader must be align on a 16 byte boundary */
isolated_loader = (char *)__get_free_pages(GFP_KERNEL, get_order(size));
if (!isolated_loader)
return;
isolated_loader_size = size;
memcpy(isolated_loader, loader, size);
printk(KERN_INFO "spufs: SPU isolation mode enabled\n");
}
......
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