git: 8b06406210e0 - stable/12 - amd64: stop re-reading curpc in suword

[Mateusz Guzik]

The branch stable/12 has been updated by mjg:

URL: https://cgit.FreeBSD.org/src/commit/?id=8b06406210e0d1dcd222b39316d94715eff8da32

commit 8b06406210e0d1dcd222b39316d94715eff8da32
Author:     Mateusz Guzik <mjg at FreeBSD.org>
AuthorDate: 2019-05-12 06:34:58 +0000
Commit:     Mateusz Guzik <mjg at FreeBSD.org>
CommitDate: 2021-06-26 15:56:56 +0000

    amd64: stop re-reading curpc in suword
    
    Plugs re-reads missed in r341719
    
    Sponsored by:   The FreeBSD Foundation
    
    (cherry picked from commit 8eae2be460aebfcba63cf5cdc11fa6fd0962470e)
---
 sys/amd64/amd64/support.S | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/sys/amd64/amd64/support.S b/sys/amd64/amd64/support.S
index f12bf5f34f70..c78055386def 100644
--- a/sys/amd64/amd64/support.S
+++ b/sys/amd64/amd64/support.S
@@ -1190,7 +1190,6 @@ ENTRY(suword_nosmap)
 
 	movq	%rsi,(%rdi)
 	xorl	%eax,%eax
-	movq	PCPU(CURPCB),%rcx
 	movq	%rax,PCB_ONFAULT(%rcx)
 	POP_FRAME_POINTER
 	ret
@@ -1209,7 +1208,6 @@ ENTRY(suword_smap)
 	movq	%rsi,(%rdi)
 	clac
 	xorl	%eax,%eax
-	movq	PCPU(CURPCB),%rcx
 	movq	%rax,PCB_ONFAULT(%rcx)
 	POP_FRAME_POINTER
 	ret
@@ -1226,7 +1224,6 @@ ENTRY(suword32_nosmap)
 
 	movl	%esi,(%rdi)
 	xorl	%eax,%eax
-	movq	PCPU(CURPCB),%rcx
 	movq	%rax,PCB_ONFAULT(%rcx)
 	POP_FRAME_POINTER
 	ret
@@ -1245,7 +1242,6 @@ ENTRY(suword32_smap)
 	movl	%esi,(%rdi)
 	clac
 	xorl	%eax,%eax
-	movq	PCPU(CURPCB),%rcx
 	movq	%rax,PCB_ONFAULT(%rcx)
 	POP_FRAME_POINTER
 	ret