diff options
| author | Dave Airlie <airlied@redhat.com> | 2015-04-20 03:32:26 +0200 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2015-04-20 05:05:20 +0200 |
| commit | 2c33ce009ca2389dbf0535d0672214d09738e35e (patch) | |
| tree | 6186a6458c3c160385d794a23eaf07c786a9e61b /arch/x86/lib/insn.c | |
| parent | media-bus: Fixup RGB444_1X12, RGB565_1X16, and YUV8_1X24 media bus format (diff) | |
| parent | Merge branch 'turbostat' of git://git.kernel.org/pub/scm/linux/kernel/git/len... (diff) | |
| download | linux-2c33ce009ca2389dbf0535d0672214d09738e35e.tar.xz linux-2c33ce009ca2389dbf0535d0672214d09738e35e.zip | |
Merge Linus master into drm-next
The merge is clean, but the arm build fails afterwards,
due to API changes in the regulator tree.
I've included the patch into the merge to fix the build.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'arch/x86/lib/insn.c')
| -rw-r--r-- | arch/x86/lib/insn.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/x86/lib/insn.c b/arch/x86/lib/insn.c index 1313ae6b478b..8f72b334aea0 100644 --- a/arch/x86/lib/insn.c +++ b/arch/x86/lib/insn.c @@ -52,6 +52,13 @@ */ void insn_init(struct insn *insn, const void *kaddr, int buf_len, int x86_64) { + /* + * Instructions longer than MAX_INSN_SIZE (15 bytes) are invalid + * even if the input buffer is long enough to hold them. + */ + if (buf_len > MAX_INSN_SIZE) + buf_len = MAX_INSN_SIZE; + memset(insn, 0, sizeof(*insn)); insn->kaddr = kaddr; insn->end_kaddr = kaddr + buf_len; @@ -164,6 +171,12 @@ found: /* VEX.W overrides opnd_size */ insn->opnd_bytes = 8; } else { + /* + * For VEX2, fake VEX3-like byte#2. + * Makes it easier to decode vex.W, vex.vvvv, + * vex.L and vex.pp. Masking with 0x7f sets vex.W == 0. + */ + insn->vex_prefix.bytes[2] = b2 & 0x7f; insn->vex_prefix.nbytes = 2; insn->next_byte += 2; } |