Date: Thu, 2 Sep 2021 00:53:01 GMT From: Konstantin Belousov <kib@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org Subject: git: ebc0d29e14f0 - stable/13 - amd64: remove lfence after swapgs on syscall entry Message-ID: <202109020053.1820r13q067175@gitrepo.freebsd.org>
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The branch stable/13 has been updated by kib: URL: https://cgit.FreeBSD.org/src/commit/?id=ebc0d29e14f08b76908ed872815ffe3d01df9a79 commit ebc0d29e14f08b76908ed872815ffe3d01df9a79 Author: Konstantin Belousov <kib@FreeBSD.org> AuthorDate: 2021-08-25 19:28:57 +0000 Commit: Konstantin Belousov <kib@FreeBSD.org> CommitDate: 2021-09-02 00:52:24 +0000 amd64: remove lfence after swapgs on syscall entry (cherry picked from commit 7aa47cace14948a7b8277a4b24a0ca9e0308990a) --- sys/amd64/amd64/exception.S | 2 -- 1 file changed, 2 deletions(-) diff --git a/sys/amd64/amd64/exception.S b/sys/amd64/amd64/exception.S index 3fb518179406..bd9f235626eb 100644 --- a/sys/amd64/amd64/exception.S +++ b/sys/amd64/amd64/exception.S @@ -525,7 +525,6 @@ prot_addrf: SUPERALIGN_TEXT IDTVEC(fast_syscall_pti) swapgs - lfence cmpq $~0,PCPU(UCR3) je fast_syscall_common movq %rax,PCPU(SCRATCH_RAX) @@ -536,7 +535,6 @@ IDTVEC(fast_syscall_pti) SUPERALIGN_TEXT IDTVEC(fast_syscall) swapgs - lfence fast_syscall_common: movq %rsp,PCPU(SCRATCH_RSP) movq PCPU(RSP0),%rsp
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