9a05aa7fc4
22707-x2apic-preenabled-check.patch - bnc#641419 - L3: Xen: qemu-dm reports "xc_map_foreign_batch: mmap failed: Cannot allocate memory" 7434-qemu-rlimit-as.patch - Additional or upstream patches from Jan 22693-fam10-mmio-conf-base-protect.patch 22694-x86_64-no-weak.patch 22708-xenctx-misc.patch 21432-4.0-cpu-boot-failure.patch 22645-amd-flush-filter.patch qemu-fix-7433.patch - Maintain compatibility with the extid flag even though it is deprecated for both legacy and sxp config files. hv_extid_compatibility.patch - bnc#649209-improve suspend eventchn lock suspend_evtchn_lock.patch - Removed the hyper-v shim patches in favor of using the upstream version. - bnc#641419 - L3: Xen: qemu-dm reports "xc_map_foreign_batch: mmap failed: Cannot allocate memory" qemu-rlimit-as.patch - Upstream c/s 7433 to replace qemu_altgr_more.patch 7433-qemu-altgr.patch OBS-URL: https://build.opensuse.org/package/show/Virtualization/xen?expand=0&rev=90
28 lines
946 B
Diff
28 lines
946 B
Diff
Subject: xenpaging: print info when free request slots drop below 2
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Add debugging aid to free request slots in the ring buffer.
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It should not happen that the ring gets full, print info anyway if it happens.
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(xen-unstable changeset: 22439:3bbb3969236c)
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Signed-off-by: Olaf Hering <olaf@aepfle.de>
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---
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xen/arch/x86/mm/mem_event.c | 5 +++++
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1 file changed, 5 insertions(+)
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--- xen-4.0.1-testing.orig/xen/arch/x86/mm/mem_event.c
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+++ xen-4.0.1-testing/xen/arch/x86/mm/mem_event.c
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@@ -168,6 +168,11 @@ int mem_event_check_ring(struct domain *
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mem_event_ring_lock(d);
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free_requests = RING_FREE_REQUESTS(&d->mem_event.front_ring);
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+ if ( unlikely(free_requests < 2) )
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+ {
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+ gdprintk(XENLOG_INFO, "free request slots: %d\n", free_requests);
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+ WARN_ON(free_requests == 0);
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+ }
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ring_full = free_requests < MEM_EVENT_RING_THRESHOLD;
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if ( (current->domain->domain_id == d->domain_id) && ring_full )
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