| 41716b8d | 07-Mar-2017 |
Roger Pau Monné <[email protected]> |
xenstore: fix suspension when using the xenstore device
Lock the xenstore request mutex when suspending user-space processes, in order
to prevent any process from holding this lock when going into s
xenstore: fix suspension when using the xenstore device
Lock the xenstore request mutex when suspending user-space processes, in order
to prevent any process from holding this lock when going into suspension, or
else the xenstore suspend process is going to deadlock.
Submitted by: Liuyingdong <[email protected]>
Reviewed by: royger
MFC after: 2 weeks
Differential revision: https://reviews.freebsd.org/D9638
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| a8f2f559 | 16-Jun-2014 |
Roger Pau Monné <[email protected]> |
xen: unify gnttab initialization for PVHVM and PVH
Switch the initialization of gnttab to use an unused physical memory
range for both PVHVM and PVH.
In the past PVHVM was using the xenpci BAR, but
xen: unify gnttab initialization for PVHVM and PVH
Switch the initialization of gnttab to use an unused physical memory
range for both PVHVM and PVH.
In the past PVHVM was using the xenpci BAR, but there's no reason to
do that, and in fact FreeBSD was probably doing it because it was the
way it was done in Windows, were drivers cannot probably request for
unused physical memory ranges, but it was never enforced in the
hypervisor.
Sponsored by: Citrix Systems R&D
Approved by: gibbs
xen/gnttab.c:
- Allocate contiguous physical memory for grant table frames for both
PVHVM and PVH.
- Since gnttab is not a device, use the xenpv device in order to
request for this allocation.
dev/xen/xenpci/xenpcivar.h:
dev/xen/xenpci/xenpci.c:
- Remove the now unused xenpci_alloc_space and xenpci_alloc_space_int
functions.
xen/gnttab.h:
- Change the prototype of gnttab_init and gnttab_resume, that now
takes a device_t parameter.
dev/xen/control/control.c:
x86/xen/xenpv.c:
- Changes to accomodate the new prototype of gnttab_init and
gnttab_resume.
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