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pc/pc64: reset DR7 in mmurelease

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This commit is contained in:
aiju 2017-06-12 19:46:25 +00:00
parent dae0f4d28d
commit 3844090f39
2 changed files with 4 additions and 0 deletions
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2
sys/src/9/pc/mmu.c
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@ -387,6 +387,8 @@ mmurelease(Proc* proc)
proc->ldt = nil;
proc->nldt = 0;
}
if(proc->dr[7] != 0)
putdr7(0);
}
/*

2
sys/src/9/pc64/mmu.c
View file

@ -425,6 +425,8 @@ mmurelease(Proc *proc)
proc->kmapcount = proc->kmapindex = 0;
}
mmufree(proc);
if(proc->dr[7] != 0)
putdr7(0);
taskswitch((uintptr)m+MACHSIZE);
}