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Change the lower bound for guest vmspace allocation to 0 instead of

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using the VM_MIN_ADDRESS constant.

HardenedBSD redefines VM_MIN_ADDRESS to be 64K, which results in
bhyve VM startup failing. Guest memory is always assumed to start
at 0 so use the absolute value instead.

Reported by:	Shawn Webb, lattera at gmail com
Reviewed by:	neel, grehan
Obtained from:	Oliver Pinter via HardenedBSD
23bd719ce1
MFC after:	1 week
This commit is contained in:
Peter Grehan 2014-11-23 23:07:21 +00:00
parent b8d52ac37c
commit 526c8885fd
1 changed files with 1 additions and 1 deletions
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2
sys/amd64/vmm/vmm.c
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@ -389,7 +389,7 @@ vm_create(const char *name, struct vm **retvm)
if (name == NULL || strlen(name) >= VM_MAX_NAMELEN)
return (EINVAL);
vmspace = VMSPACE_ALLOC(VM_MIN_ADDRESS, VM_MAXUSER_ADDRESS);
vmspace = VMSPACE_ALLOC(0, VM_MAXUSER_ADDRESS);
if (vmspace == NULL)
return (ENOMEM);