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arm64: fix endianness annotation for 'struct jit_ctx' and friends

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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>
This commit is contained in:
Luc Van Oostenryck 2017-06-28 16:58:03 +02:00 committed by Will Deacon
parent 70a62ad19e
commit 425e1ed73e
1 changed files with 3 additions and 3 deletions
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6
arch/arm64/net/bpf_jit_comp.c
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@ -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);