Sign Up
Log In
Log In
or
Sign Up
Places
All Projects
Status Monitor
Collapse sidebar
openSUSE:12.2
xen
24148-shadow-pgt-dying-op-performance.patch
Overview
Repositories
Revisions
Requests
Users
Attributes
Meta
File 24148-shadow-pgt-dying-op-performance.patch of Package xen
References: bnc#726332 # HG changeset patch # User Gianluca Guida <gianluca.guida@citrix.com> # Date 1321456773 0 # Node ID 3ecc8fef428138e4304ef11b47498981e63626b3 # Parent a5f1d3b1612bb48e1cb09dc66b0909e3613dc855 [shadow] Disable higher level pagetables early unshadow only when the "process dying" hypercall is used. This patch fixes a performance problem in fully virtualized guests. Signed-off-by: Gianluca Guida <gianluca.guida@citrix.com> Tested-by: Jan Beulich <jbeulich@suse.com> Committed-by: Keir Fraser <keir@xen.org> --- a/xen/arch/x86/mm/shadow/multi.c +++ b/xen/arch/x86/mm/shadow/multi.c @@ -2743,8 +2743,9 @@ static inline void check_for_early_unsha || ( !v->domain->arch.paging.shadow.pagetable_dying_op && v->arch.paging.shadow.last_emulated_mfn_for_unshadow == mfn_x(gmfn) ) ) && sh_mfn_is_a_page_table(gmfn) - && !(mfn_to_page(gmfn)->shadow_flags - & (SHF_L2_32|SHF_L2_PAE|SHF_L2H_PAE|SHF_L4_64)) ) + && (!v->domain->arch.paging.shadow.pagetable_dying_op || + !(mfn_to_page(gmfn)->shadow_flags + & (SHF_L2_32|SHF_L2_PAE|SHF_L2H_PAE|SHF_L4_64))) ) { perfc_incr(shadow_early_unshadow); sh_remove_shadows(v, gmfn, 1, 0 /* Fast, can fail to unshadow */ );
Locations
Projects
Search
Status Monitor
Help
OpenBuildService.org
Documentation
API Documentation
Code of Conduct
Contact
Support
@OBShq
Terms
openSUSE Build Service is sponsored by
The Open Build Service is an
openSUSE project
.
Sign Up
Log In
Places
Places
All Projects
Status Monitor