diff options
| author | Attila Fülöp <[email protected]> | 2020-03-17 18:24:38 +0100 |
|---|---|---|
| committer | GitHub <[email protected]> | 2020-03-17 10:24:38 -0700 |
| commit | 5b3b79559c3206ea5916cbdab72b88344aa6e9a2 (patch) | |
| tree | e05419340a03581a05f494e2b16c9901acd713f1 /module/icp/include | |
| parent | a57d3d45d6efdff935421e2ef3f97e3dc089d93d (diff) | |
ICP: gcm-avx: Support architectures lacking the MOVBE instruction
There are a couple of x86_64 architectures which support all needed
features to make the accelerated GCM implementation work but the
MOVBE instruction. Those are mainly Intel Sandy- and Ivy-Bridge
and AMD Bulldozer, Piledriver, and Steamroller.
By using MOVBE only if available and replacing it with a MOV
followed by a BSWAP if not, those architectures now benefit from
the new GCM routines and performance is considerably better
compared to the original implementation.
Reviewed-by: Brian Behlendorf <[email protected]>
Reviewed-by: Adam D. Moss <[email protected]>
Signed-off-by: Attila Fülöp <[email protected]>
Followup #9749
Closes #10029
Diffstat (limited to 'module/icp/include')
| -rw-r--r-- | module/icp/include/modes/modes.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/module/icp/include/modes/modes.h b/module/icp/include/modes/modes.h index 9396eab5c..57a211ccf 100644 --- a/module/icp/include/modes/modes.h +++ b/module/icp/include/modes/modes.h @@ -40,8 +40,9 @@ extern "C" { * anyhow. */ #if defined(__x86_64__) && defined(HAVE_AVX) && \ - defined(HAVE_AES) && defined(HAVE_PCLMULQDQ) && defined(HAVE_MOVBE) + defined(HAVE_AES) && defined(HAVE_PCLMULQDQ) #define CAN_USE_GCM_ASM +extern boolean_t gcm_avx_can_use_movbe; #endif #define ECB_MODE 0x00000002 |