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authorLuc Van Oostenryck <luc.vanoostenryck@gmail.com>2017-06-28 16:58:03 +0200
committerWill Deacon <will.deacon@arm.com>2017-06-30 17:11:28 +0100
commit425e1ed73e6574e4fe186ec82fd37213cbd47df0 (patch)
treef5c1b14561bd44748353c203903539e39bf222c1 /arch/arm64/net/bpf_jit_comp.c
parentarm64: cpuinfo: constify attribute_group structures. (diff)
downloadlinux-dev-425e1ed73e6574e4fe186ec82fd37213cbd47df0.tar.xz
linux-dev-425e1ed73e6574e4fe186ec82fd37213cbd47df0.zip
arm64: fix endianness annotation for 'struct jit_ctx' and friends
struct jit_ctx::image is used the store a pointer to the jitted intructions, which are always little-endian. These instructions are thus correctly converted from native order to little-endian before being stored but the pointer 'image' is declared as for native order values. Fix this by declaring the field as __le32* instead of u32*. Same for the pointer used in jit_fill_hole() to initialize the image. Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm64/net/bpf_jit_comp.c')
-rw-r--r--arch/arm64/net/bpf_jit_comp.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/arm64/net/bpf_jit_comp.c b/arch/arm64/net/bpf_jit_comp.c
index 71f930501ade..bd2ac9912087 100644
--- a/arch/arm64/net/bpf_jit_comp.c
+++ b/arch/arm64/net/bpf_jit_comp.c
@@ -68,7 +68,7 @@ struct jit_ctx {
int idx;
int epilogue_offset;
int *offset;
- u32 *image;
+ __le32 *image;
};
static inline void emit(const u32 insn, struct jit_ctx *ctx)
@@ -128,7 +128,7 @@ static inline int bpf2a64_offset(int bpf_to, int bpf_from,
static void jit_fill_hole(void *area, unsigned int size)
{
- u32 *ptr;
+ __le32 *ptr;
/* We are guaranteed to have aligned memory. */
for (ptr = area; size >= sizeof(u32); size -= sizeof(u32))
*ptr++ = cpu_to_le32(AARCH64_BREAK_FAULT);
@@ -871,7 +871,7 @@ struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *prog)
/* 2. Now, the actual pass. */
- ctx.image = (u32 *)image_ptr;
+ ctx.image = (__le32 *)image_ptr;
ctx.idx = 0;
build_prologue(&ctx);