The condition: if there is a space in the ring then wait for the producer
to fill the ring also evaluates to true even if the ring if full. It
leads to a deadlock where producer is waiting for consumer
to consume the items and consumer is waiting for producer to fill the ring.
Fix for the issue: check if the ring is full and then break from
the loop to consume the items from the ring.
eg. case: prod = 1272, cons = 248.
Signed-off-by: Anshul Makkar <anshul.makkar@citrix.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
Release-acked-by: Julien Grall <julien.grall@arm.com>
Rate limit assures that a vcpu will execute for a minimum amount of
time before being put at the back of a queue or being preempted by
higher priority thread.
It introduces context-switch rate-limiting. The patch enables the VM
to batch its work and prevents the system from spending most of its
time in context switches because of a VM that is waking/sleeping at
high rate.
ratelimit can be disabled by setting it to 0.
Signed-off-by: Anshul Makkar <anshul.makkar@citrix.com>
Reviewed-by: George Dunlap <george.dunlap@citrix.com>
Reviewed-by: Dario Faggioli <dario.faggioli@citrix.com>
Access to setpodtarget and getpodtarget is required by dom0 to set the balloon
targets for domU. The patch gives source domain (dom0) access to set
this target for domU and resolve the following permission denied erro
message during ballooning :
avc: denied { setpodtarget } for domid=0 target=9
scontext=system_u:system_r:dom0_t
tcontext=system_u:system_r:domU_t tclass=domain
Signed-off-by: Anshul Makkar <anshul.makkar@citrix.com>
Acked-by: Daniel De Graaf <dgdegra@tycho.nsa.gov>
This patch resolves the following permission denied scenarios while creating
new domU :
avc: denied { setdomainhandle } for domid=0 target=1
scontext=system_u:system_r:dom0_t tcontext=system_u:system_r:domU_t tclass=domain
avc: denied { settime } for domid=0 target=1 scontext=system_u:system_r:dom0_t
tcontext=system_u:system_r:domU_t tclass=domain
Signed-off-by: Anshul Makkar <anshul.makkar@citrix.com>
Acked-by: Daniel De Graaf <dgdegra@tycho.nsa.gov>
A domain with sufficient shadow allocation can cause a watchdog timeout
during domain destruction. Expand the existing -ERESTART logic in
paging_teardown() to allow {hap/sh}_set_allocation() to become
restartable during the DOMCTL_destroydomain hypercall.
Signed-off-by: Anshul Makkar <anshul.makkar@citrix.com>
Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Reviewed-by: Tim Deegan <tim@xen.org>
Reviewed-by: George Dunlap <george.dunlap@eu.citrix.com>
Anshul Makkar