diff options
| author | maxv <maxv@NetBSD.org> | 2020-08-11 15:48:42 +0000 |
|---|---|---|
| committer | maxv <maxv@NetBSD.org> | 2020-08-11 15:48:42 +0000 |
| commit | d742e477ae6345e9b5a60240aeac0b1aeb701c0a (patch) | |
| tree | 6480a42ceefc1cb2c69c169e5eb278082bd01934 /sys/dev | |
| parent | f389da05e254455ec8829b92220c328df58f6829 (diff) | |
Micro-optimize: use pushq instead of pushw. To avoid LCP stalls and
unaligned stack accesses.
Diffstat (limited to 'sys/dev')
| -rw-r--r-- | sys/dev/nvmm/x86/nvmm_x86_svmfunc.S | 10 | ||||
| -rw-r--r-- | sys/dev/nvmm/x86/nvmm_x86_vmxfunc.S | 6 |
2 files changed, 8 insertions, 8 deletions
diff --git a/sys/dev/nvmm/x86/nvmm_x86_svmfunc.S b/sys/dev/nvmm/x86/nvmm_x86_svmfunc.S index c9e1d6ac8a8..2bd71511708 100644 --- a/sys/dev/nvmm/x86/nvmm_x86_svmfunc.S +++ b/sys/dev/nvmm/x86/nvmm_x86_svmfunc.S @@ -1,4 +1,4 @@ -/* $NetBSD: nvmm_x86_svmfunc.S,v 1.4 2020/07/19 06:36:37 maxv Exp $ */ +/* $NetBSD: nvmm_x86_svmfunc.S,v 1.5 2020/08/11 15:48:42 maxv Exp $ */ /* * Copyright (c) 2018-2020 The NetBSD Foundation, Inc. @@ -75,10 +75,10 @@ #define HOST_SAVE_TR \ strw %ax ;\ - pushw %ax + pushq %rax #define HOST_RESTORE_TR \ - popw %ax ;\ + popq %rax ;\ movzwq %ax,%rdx ;\ movq CPUVAR(GDT),%rax ;\ andq $~0x0200,4(%rax,%rdx, 1) ;\ @@ -86,10 +86,10 @@ #define HOST_SAVE_LDT \ sldtw %ax ;\ - pushw %ax + pushq %rax #define HOST_RESTORE_LDT \ - popw %ax ;\ + popq %rax ;\ lldtw %ax /* diff --git a/sys/dev/nvmm/x86/nvmm_x86_vmxfunc.S b/sys/dev/nvmm/x86/nvmm_x86_vmxfunc.S index 3dd8d360392..8103a8024ae 100644 --- a/sys/dev/nvmm/x86/nvmm_x86_vmxfunc.S +++ b/sys/dev/nvmm/x86/nvmm_x86_vmxfunc.S @@ -1,4 +1,4 @@ -/* $NetBSD: nvmm_x86_vmxfunc.S,v 1.4 2020/07/19 06:36:37 maxv Exp $ */ +/* $NetBSD: nvmm_x86_vmxfunc.S,v 1.5 2020/08/11 15:48:42 maxv Exp $ */ /* * Copyright (c) 2018-2020 The NetBSD Foundation, Inc. @@ -100,10 +100,10 @@ END(_vmx_vmxoff) #define HOST_SAVE_LDT \ sldtw %ax ;\ - pushw %ax + pushq %rax #define HOST_RESTORE_LDT \ - popw %ax ;\ + popq %rax ;\ lldtw %ax /* |
