Date: Sat, 1 May 2021 00:39:11 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: 71add7877a02 - stable/12 - x86: use x86_clear_dbregs() on fork Message-ID: <202105010039.1410dBE7048253@gitrepo.freebsd.org>
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The branch stable/12 has been updated by kib: URL: https://cgit.FreeBSD.org/src/commit/?id=71add7877a02dffa93883cc1b83542bc540645f4 commit 71add7877a02dffa93883cc1b83542bc540645f4 Author: Konstantin Belousov <kib@FreeBSD.org> AuthorDate: 2021-04-09 23:20:55 +0000 Commit: Konstantin Belousov <kib@FreeBSD.org> CommitDate: 2021-05-01 00:38:29 +0000 x86: use x86_clear_dbregs() on fork (cherry picked from commit 290b0d123ae2136ad84b268cd1884b1624d1d37f) --- sys/amd64/amd64/vm_machdep.c | 7 +------ sys/i386/i386/vm_machdep.c | 7 +------ 2 files changed, 2 insertions(+), 12 deletions(-) diff --git a/sys/amd64/amd64/vm_machdep.c b/sys/amd64/amd64/vm_machdep.c index 5b3845e5c68e..da7f58d4fd3c 100644 --- a/sys/amd64/amd64/vm_machdep.c +++ b/sys/amd64/amd64/vm_machdep.c @@ -182,12 +182,7 @@ cpu_fork(struct thread *td1, struct proc *p2, struct thread *td2, int flags) cpu_max_ext_state_size); /* Reset debug registers in the new process */ - pcb2->pcb_dr0 = 0; - pcb2->pcb_dr1 = 0; - pcb2->pcb_dr2 = 0; - pcb2->pcb_dr3 = 0; - pcb2->pcb_dr6 = 0; - pcb2->pcb_dr7 = 0; + x86_clear_dbregs(pcb2); /* Point mdproc and then copy over td1's contents */ mdp2 = &p2->p_md; diff --git a/sys/i386/i386/vm_machdep.c b/sys/i386/i386/vm_machdep.c index c76074f5446d..8f1b0a971f58 100644 --- a/sys/i386/i386/vm_machdep.c +++ b/sys/i386/i386/vm_machdep.c @@ -193,12 +193,7 @@ cpu_fork(struct thread *td1, struct proc *p2, struct thread *td2, int flags) cpu_max_ext_state_size); /* Reset debug registers in the new process */ - pcb2->pcb_dr0 = 0; - pcb2->pcb_dr1 = 0; - pcb2->pcb_dr2 = 0; - pcb2->pcb_dr3 = 0; - pcb2->pcb_dr6 = 0; - pcb2->pcb_dr7 = 0; + x86_clear_dbregs(pcb2); /* Point mdproc and then copy over td1's contents */ mdp2 = &p2->p_md;
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