08a77ed8c4
xenpaging.tools_xenpaging_cleanup.patch - fate#310510 - fix xenpaging xenpaging.mem_event_check_ring-free_requests.patch - install /etc/xen/examples/xentrace_formats.txt to get human readable tracedata if xenalyze is not used - fate#310510 - fix xenpaging xenpaging.autostart_delay.patch xenpaging.blacklist.patch xenpaging.MRU_SIZE.patch remove xenpaging.hacks.patch, realmode works - Upstream patches from Jan including fixes for the following bugs bnc#583568 - Xen kernel is not booting bnc#615206 - Xen kernel fails to boot with IO-APIC problem bnc#640773 - Xen kernel crashing right after grub bnc#643477 - issues with PCI hotplug/hotunplug to Xen driver domain 22223-vtd-igd-workaround.patch 22222-x86-timer-extint.patch 22214-x86-msr-misc-enable.patch 22213-x86-xsave-cpuid-check.patch 22194-tmem-check-pv-mfn.patch 22177-i386-irq-safe-map_domain_page.patch 22175-x86-irq-enter-exit.patch 22174-x86-pmtimer-accuracy.patch 22160-Intel-C6-EOI.patch OBS-URL: https://build.opensuse.org/package/show/Virtualization/xen?expand=0&rev=76
30 lines
1.1 KiB
Diff
30 lines
1.1 KiB
Diff
Subject: xenpaging/qemu-dm: add command to flush buffer cache.
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Add support for a xenstore dm command to flush qemu's buffer cache.
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qemu will just keep mapping pages and not release them, which causes problems
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for the memory pager (since the page is mapped, it won't get paged out). When
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the pager has trouble finding a page to page out, it asks qemu to flush its
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buffer, which releases all the page mappings. This makes it possible to find
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pages to swap out agian.
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Already-Signed-off-by: Patrick Colp <Patrick.Colp@citrix.com>
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Signed-off-by: Olaf Hering <olaf@aepfle.de>
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---
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tools/ioemu-qemu-xen/xenstore.c | 3 +++
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1 file changed, 3 insertions(+)
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--- xen-4.0.1-testing.orig/tools/ioemu-qemu-xen/xenstore.c
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+++ xen-4.0.1-testing/tools/ioemu-qemu-xen/xenstore.c
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@@ -1021,6 +1021,9 @@ static void xenstore_process_dm_command_
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do_pci_add(par);
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free(par);
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#endif
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+ } else if (!strncmp(command, "flush-cache", len)) {
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+ fprintf(logfile, "dm-command: flush caches\n");
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+ qemu_invalidate_map_cache();
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} else {
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fprintf(logfile, "dm-command: unknown command\"%*s\"\n", len, command);
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}
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