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amd64 linux64: use x86_clear_dbregs()

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instead of manually inlining it

Reviewed by:	jhb
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D29687
This commit is contained in:
Konstantin Belousov 2021-04-10 02:22:48 +03:00
parent 290b0d123a
commit 2f15884747
1 changed files with 1 additions and 21 deletions
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22
sys/amd64/linux/linux_sysvec.c
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@ -477,27 +477,7 @@ linux_exec_setregs(struct thread *td, struct image_params *imgp,
regs->tf_gs = _ugssel; regs->tf_gs = _ugssel;
regs->tf_flags = TF_HASSEGS; regs->tf_flags = TF_HASSEGS;
/* x86_clear_dbregs(pcb);
* 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);
}
/* /*
* Drop the FP state if we hold it, so that the process gets a * Drop the FP state if we hold it, so that the process gets a