Message ID | dd9205b8-63f0-b1bc-f2b8-50d5da2bf2a7@suse.com (mailing list archive) |
---|---|
Headers | show |
Series | x86: assorted (mostly) shadow mode adjustments | expand |
On 22/03/2023 9:28 am, Jan Beulich wrote: > This is kind of fallout from XSA-427 investigations, partly related to > there having been a more intrusive first approach. This is also the > reason why one of the patch has R-b already - that was a prereq for > the original approach. > > Most patches aren't really dependent upon one another, so can probably > go in independently (as they get acked). > > 01: shadow: fix and improve sh_page_has_multiple_shadows() > 02: shadow: fold/rename sh_unhook_*_mappings() > 03: shadow: drop redundant present bit checks from SHADOW_FOREACH_L<N>E() "bodys" > 04: shadow: replace memcmp() in sh_resync_l1() > 05: shadow: reduce explicit log-dirty recording for HVM > 06: shadow: purge {write,cmpxchg}_guest_entry() hooks > 07: shadow: call sh_update_cr3() directly sh_page_fault() > 08: shadow: use lighter weight mode checks > 09: shadow: OOS mode is HVM-only > 10: shadow: move OOS functions to their own file > 11: shadow: drop is_hvm_...() where easily possible > 12: shadow: make monitor table create/destroy more consistent > 13: shadow: vCPU-s never have "no mode" > 14: shadow: "monitor table" is a HVM-only concept > 15: shadow: adjust monitor table prealloc amount > 16: PV: conditionalize arch_set_info_guest()'s call to update_cr3() Out of interest, I looked at the net delta from this, and it's quite interesting. For data: add/remove: 0/0 grow/shrink: 1/7 up/down: 8/-112 (-104) __func__ 2986 2994 +8 sh_paging_mode__guest_4 96 80 -16 ... which is nice all around. (Shame that __func__ is being merged everywhere but oh well.) For code, two notable exerts: add/remove: 6/5 grow/shrink: 5/39 up/down: 1549/-3499 (-1950) Function old new delta mod_l1_entry 2120 2008 -112 do_mmu_update 6548 6209 -339 I can't see any patch which obviously makes that change in one go, so I can only assume it's combination of various small things. ~Andrew