oneechanhax/phunix
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

only switch pagetable if necessary and it's different for copying messages

Browse Source
This commit is contained in:
Ben Gras 2009-06-03 15:28:13 +00:00
parent 37cd6bc06c
commit 9d56ac3fc9
1 changed files with 4 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
kernel/arch/i386/memory.c
View File

@ -704,11 +704,14 @@ u32_t read_cr3(void)
phys_bytes arch_switch_copymsg(struct proc *rp, message *m, phys_bytes lin)
{
phys_bytes r;
if(rp->p_seg.p_cr3) {
int u = 0;
if(!intr_disabled()) { lock; u = 1; }
if(rp->p_seg.p_cr3 && ptproc != rp) {
vm_set_cr3(rp->p_seg.p_cr3);
ptproc = rp;
}
r = phys_copy(vir2phys(m), lin, sizeof(message));
if(u) { unlock; }
}
/*===========================================================================*