From: Andrew Cooper <andrew.cooper3@citrix.com>
To: Xen-devel <xen-devel@lists.xen.org>
Cc: Andrew Cooper <andrew.cooper3@citrix.com>
Subject: [PATCH v2 0/9] Fixes to pagetable handling
Date: Thu, 16 Mar 2017 16:31:34 +0000 [thread overview]
Message-ID: <1489681903-28119-1-git-send-email-andrew.cooper3@citrix.com> (raw)
This series has been a long time in preparation (i.e. most of the 4.8 and 4.9
dev cycles). It started when I tried to make an XTF PoC for XSA-176, and
stumbled upon the the _PAGE_PAGED aliasing issue (see patch 7) which caused by
PoC to be descheduled waiting for (a non-existent) paging agent to respond.
This series is built upon:
1) The switch to using _Bool. I spent rather too long trying to debug why
CR0.WP wasn't behaving properly, and it was down to static inline bool_t
guest_wp_enabled().
2) The series to switch emulation to using system-segment relative memory
accesses (directly relevant to patches 1 and 2), which in turn resulted
in the discovery of XSA-191.
3) The CPUID improvement work to get maxphysaddr into a sensibly audited
state, and sensibly accessible location.
Patches 1-4 and 8-9 are new in v2, mostly items requested to be split out in
review from v1.
Andrew Cooper (9):
x86/cpuid: Sort cpu_has_* predicates by feature number
x86/pagewalk: Use pointer syntax for pfec parameter
x86/shadow: Drop VALID_GFN()
x86/pagewalk: Clean up guest_supports_* predicates
x86/pagewalk: Helpers for reserved bit handling
x86/pagewalk: Re-implement the pagetable walker
x86/shadow: Use the pagewalk reserved bits helpers
x86/pagewalk: Improve the logic behind setting access and dirty bits
x86/pagewalk: non-functional cleanup
xen/arch/x86/mm/guest_walk.c | 574 +++++++++++++++++++++-----------------
xen/arch/x86/mm/hap/guest_walk.c | 33 +--
xen/arch/x86/mm/hap/nested_ept.c | 2 +-
xen/arch/x86/mm/p2m.c | 17 +-
xen/arch/x86/mm/shadow/multi.c | 99 ++++---
xen/include/asm-x86/cpufeature.h | 118 ++++----
xen/include/asm-x86/guest_pt.h | 215 +++++++++++---
xen/include/asm-x86/hvm/hvm.h | 4 -
xen/include/asm-x86/p2m.h | 2 +-
xen/include/asm-x86/page.h | 3 -
xen/include/asm-x86/paging.h | 7 +-
xen/include/asm-x86/processor.h | 2 +
xen/include/asm-x86/x86_64/page.h | 6 -
13 files changed, 642 insertions(+), 440 deletions(-)
--
2.1.4
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next reply other threads:[~2017-03-16 16:31 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-16 16:31 Andrew Cooper [this message]
2017-03-16 16:31 ` [PATCH v2 1/9] x86/cpuid: Sort cpu_has_* predicates by feature number Andrew Cooper
2017-03-17 16:08 ` Jan Beulich
2017-03-16 16:31 ` [PATCH v2 2/9] x86/pagewalk: Use pointer syntax for pfec parameter Andrew Cooper
2017-03-17 16:09 ` Jan Beulich
2017-03-20 11:29 ` George Dunlap
2017-03-23 16:28 ` Tim Deegan
2017-03-16 16:31 ` [PATCH v2 3/9] x86/shadow: Drop VALID_GFN() Andrew Cooper
2017-03-23 16:30 ` Tim Deegan
2017-03-16 16:31 ` [PATCH v2 4/9] x86/pagewalk: Clean up guest_supports_* predicates Andrew Cooper
2017-03-20 8:45 ` Jan Beulich
2017-03-20 13:36 ` Andrew Cooper
2017-03-20 13:59 ` Jan Beulich
2017-03-23 17:32 ` Andrew Cooper
2017-03-24 7:19 ` Jan Beulich
2017-03-23 16:34 ` Tim Deegan
2017-03-16 16:31 ` [PATCH v2 5/9] x86/pagewalk: Helpers for reserved bit handling Andrew Cooper
2017-03-20 8:48 ` Jan Beulich
2017-03-23 16:55 ` Tim Deegan
2017-03-23 17:02 ` Andrew Cooper
2017-03-23 17:12 ` Tim Deegan
2017-03-23 17:35 ` Andrew Cooper
2017-03-24 5:45 ` Juergen Gross
2017-03-24 7:51 ` Jan Beulich
[not found] ` <58D4DDFF0200007800147138@suse.com>
2017-03-24 7:58 ` Juergen Gross
2017-03-24 8:25 ` Jan Beulich
2017-03-24 9:06 ` Andrew Cooper
2017-03-24 7:47 ` Jan Beulich
2017-03-24 8:36 ` Andrew Cooper
2017-03-16 16:31 ` [PATCH v2 6/9] x86/pagewalk: Re-implement the pagetable walker Andrew Cooper
2017-03-16 16:31 ` [PATCH v2 7/9] x86/shadow: Use the pagewalk reserved bits helpers Andrew Cooper
2017-03-16 17:25 ` Andrew Cooper
2017-03-20 8:53 ` Jan Beulich
2017-03-23 16:57 ` Tim Deegan
2017-03-16 16:31 ` [PATCH v2 8/9] x86/pagewalk: Improve the logic behind setting access and dirty bits Andrew Cooper
2017-03-20 9:03 ` Jan Beulich
2017-03-23 17:09 ` Tim Deegan
2017-03-23 17:40 ` Andrew Cooper
2017-03-16 16:31 ` [PATCH v2 9/9] x86/pagewalk: non-functional cleanup Andrew Cooper
2017-03-20 9:04 ` Jan Beulich
2017-03-23 17:10 ` Tim Deegan
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