diff options
| author |   Steven Luong <sluong@cisco.com> | 2021-11-10 08:54:38 -0800 |
|---|---|---|
| committer | Steven Luong <sluong@cisco.com> | 2021-11-10 09:02:24 -0800 |
| commit | 4d769c71a10bb99a1afc369e85d7d444e7b439f3 (patch) | |
| tree | fdabf78779e14c2704cc69bc4d191aba04990739 | |
| parent | 56f54af21d18f9fdd471b81db77a3942b0aa4d9c (diff) | |
ip: crash in ip_csum_fold due to illegal instruction shrx
Encounter a crash for the line
shrx edi,eax,edi
in ip_csum_fold. The target cpu is ivy bridge which does not support
shrx instruction.
Type: fix
Fixes: e6709ff37dc0f3a58ed5ad98aace73fe801f1e9d
Signed-off-by: Steven Luong <sluong@cisco.com>
Change-Id: Icc922d3b2ebfcfa721f63946a213b6c492874a9a
| -rwxr-xr-x[-rw-r--r--] | src/vnet/ip/ip_packet.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/vnet/ip/ip_packet.h b/src/vnet/ip/ip_packet.h index d862caa3a52..837b3df8563 100644..100755 --- a/src/vnet/ip/ip_packet.h +++ b/src/vnet/ip/ip_packet.h @@ -301,7 +301,7 @@ always_inline u16 ip_csum_fold (ip_csum_t c) { /* Reduce to 16 bits. */ -#ifdef __x86_64__ +#if defined(__x86_64__) && defined(__BMI2__) u64 tmp; asm volatile( /* using ADC is much faster than mov, shift, add sequence |