ac6e56e6d7
23900-xzalloc.patch 24144-cpufreq-turbo-crash.patch 24148-shadow-pgt-dying-op-performance.patch 24155-x86-ioapic-EOI-after-migration.patch 24156-x86-ioapic-shared-vectors.patch 24157-x86-xstate-init.patch 24168-x86-vioapic-clear-remote_irr.patch - submit fixes for bnc#649209 and bnc#711892 xl-create-pv-with-qcow2-img.patch update suspend_evtchn_lock.patch - Update trace.c, merge patches from upstream 23050-xentrace_dynamic_tracebuffer_allocation.patch 23091-xentrace_fix_t_info_pages_calculation..patch 23092-xentrace_print_calculated_numbers_in_calculate_tbuf_size.patch 23093-xentrace_remove_gdprintk_usage_since_they_are_not_in_guest_context.patch 23094-xentrace_update_comments.patch 23095-xentrace_use_consistent_printk_prefix.patch 23128-xentrace_correct_formula_to_calculate_t_info_pages.patch 23129-xentrace_remove_unneeded_debug_printk.patch 23173-xentrace_Move_register_cpu_notifier_call_into_boot-time_init..patch 23239-xentrace_correct_overflow_check_for_number_of_per-cpu_trace_pages.patch 23308-xentrace_Move_the_global_variable_t_info_first_offset_into_calculate_tbuf_size.patch 23309-xentrace_Mark_data_size___read_mostly_because_its_only_written_once.patch 23310-xentrace_Remove_unneeded_cast_when_assigning_pointer_value_to_dst.patch 23404-xentrace_reduce_trace_buffer_size_to_something_mfn_offset_can_reach.patch OBS-URL: https://build.opensuse.org/package/show/Virtualization/xen?expand=0&rev=160
30 lines
1.3 KiB
Diff
30 lines
1.3 KiB
Diff
References: bnc#726332
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# HG changeset patch
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# User Gianluca Guida <gianluca.guida@citrix.com>
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# Date 1321456773 0
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# Node ID 3ecc8fef428138e4304ef11b47498981e63626b3
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# Parent a5f1d3b1612bb48e1cb09dc66b0909e3613dc855
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[shadow] Disable higher level pagetables early unshadow only when the "process dying" hypercall is used.
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This patch fixes a performance problem in fully virtualized guests.
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Signed-off-by: Gianluca Guida <gianluca.guida@citrix.com>
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Tested-by: Jan Beulich <jbeulich@suse.com>
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Committed-by: Keir Fraser <keir@xen.org>
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--- a/xen/arch/x86/mm/shadow/multi.c
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+++ b/xen/arch/x86/mm/shadow/multi.c
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@@ -2743,8 +2743,9 @@ static inline void check_for_early_unsha
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|| ( !v->domain->arch.paging.shadow.pagetable_dying_op
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&& v->arch.paging.shadow.last_emulated_mfn_for_unshadow == mfn_x(gmfn) ) )
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&& sh_mfn_is_a_page_table(gmfn)
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- && !(mfn_to_page(gmfn)->shadow_flags
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- & (SHF_L2_32|SHF_L2_PAE|SHF_L2H_PAE|SHF_L4_64)) )
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+ && (!v->domain->arch.paging.shadow.pagetable_dying_op ||
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+ !(mfn_to_page(gmfn)->shadow_flags
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+ & (SHF_L2_32|SHF_L2_PAE|SHF_L2H_PAE|SHF_L4_64))) )
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{
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perfc_incr(shadow_early_unshadow);
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sh_remove_shadows(v, gmfn, 1, 0 /* Fast, can fail to unshadow */ );
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