Date: Sat, 1 May 2021 00:39:09 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: bd19553cb5d2 - stable/12 - amd64 linux64: use x86_clear_dbregs() Message-ID: <202105010039.1410d9j8048211@gitrepo.freebsd.org>
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The branch stable/12 has been updated by kib: URL: https://cgit.FreeBSD.org/src/commit/?id=bd19553cb5d26a4100e3f6cc90e65647ded36b97 commit bd19553cb5d26a4100e3f6cc90e65647ded36b97 Author: Konstantin Belousov <kib@FreeBSD.org> AuthorDate: 2021-04-09 23:22:48 +0000 Commit: Konstantin Belousov <kib@FreeBSD.org> CommitDate: 2021-05-01 00:38:29 +0000 amd64 linux64: use x86_clear_dbregs() (cherry picked from commit 2f1588474768f61f3a983af207e753bd0340a9e7) --- sys/amd64/linux/linux_sysvec.c | 22 +--------------------- 1 file changed, 1 insertion(+), 21 deletions(-) diff --git a/sys/amd64/linux/linux_sysvec.c b/sys/amd64/linux/linux_sysvec.c index b14b4014a87a..03240acaae1c 100644 --- a/sys/amd64/linux/linux_sysvec.c +++ b/sys/amd64/linux/linux_sysvec.c @@ -424,27 +424,7 @@ linux_exec_setregs(struct thread *td, struct image_params *imgp, u_long stack) regs->tf_gs = _ugssel; regs->tf_flags = TF_HASSEGS; - /* - * Reset the hardware debug registers if they were in use. - * They won't have any meaning for the newly exec'd process. - */ - if (pcb->pcb_flags & PCB_DBREGS) { - pcb->pcb_dr0 = 0; - pcb->pcb_dr1 = 0; - pcb->pcb_dr2 = 0; - pcb->pcb_dr3 = 0; - pcb->pcb_dr6 = 0; - pcb->pcb_dr7 = 0; - if (pcb == curpcb) { - /* - * Clear the debug registers on the running - * CPU, otherwise they will end up affecting - * the next process we switch to. - */ - reset_dbregs(); - } - clear_pcb_flags(pcb, PCB_DBREGS); - } + x86_clear_dbregs(pcb); /* * Drop the FP state if we hold it, so that the process gets a
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