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vm: allow split of mem_anon_contig region

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. so that memory of such regions can be deallocated in any order

Change-Id: I34013d6085cf19a482412cf9bed6b7f96e60e1e6
This commit is contained in:
Ben Gras 2014-09-01 15:02:08 +02:00
parent 45474c5368
commit 48e74378c7
2 changed files with 10 additions and 0 deletions
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9
minix/servers/vm/mem_anon_contig.c
View file

@ -15,6 +15,8 @@ static int anon_contig_pagefault(struct vmproc *vmp, struct vir_region *region,
int len, int *io);
static int anon_contig_sanitycheck(struct phys_region *pr, const char *file, int line);
static int anon_contig_writable(struct phys_region *pr);
static void anon_contig_split(struct vmproc *vmp, struct vir_region *vr,
struct vir_region *r1, struct vir_region *r2);
static int anon_contig_resize(struct vmproc *vmp, struct vir_region *vr, vir_bytes l);
static int anon_contig_new(struct vir_region *vr);
static int anon_contig_pt_flags(struct vir_region *vr);
@ -26,6 +28,7 @@ struct mem_type mem_type_anon_contig = {
.ev_unreference = anon_contig_unreference,
.ev_pagefault = anon_contig_pagefault,
.ev_resize = anon_contig_resize,
.ev_split = anon_contig_split,
.ev_sanitycheck = anon_contig_sanitycheck,
.writable = anon_contig_writable,
.pt_flags = anon_contig_pt_flags,
@ -121,3 +124,9 @@ static int anon_contig_writable(struct phys_region *pr)
return mem_type_anon.writable(pr);
}
static void anon_contig_split(struct vmproc *vmp, struct vir_region *vr,
struct vir_region *r1, struct vir_region *r2)
{
return;
}

1
minix/servers/vm/region.c
View file

@ -1160,6 +1160,7 @@ static int split_region(struct vmproc *vmp, struct vir_region *vr,
if(!vr->def_memtype->ev_split) {
printf("VM: split region not implemented for %s\n",
vr->def_memtype->name);
sys_diagctl_stacktrace(vmp->vm_endpoint);
return EINVAL;
}