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From: Adrian Pop <apop@bitdefender.com>
To: xen-devel@lists.xenproject.org
Cc: Stefano Stabellini <sstabellini@kernel.org>,
	Wei Liu <wei.liu2@citrix.com>,
	Razvan Cojocaru <rcojocaru@bitdefender.com>,
	George Dunlap <george.dunlap@eu.citrix.com>,
	Andrew Cooper <andrew.cooper3@citrix.com>,
	Adrian Pop <apop@bitdefender.com>,
	Ian Jackson <ian.jackson@eu.citrix.com>, Tim Deegan <tim@xen.org>,
	Julien Grall <julien.grall@arm.com>,
	Tamas K Lengyel <tamas@tklengyel.com>,
	Jan Beulich <jbeulich@suse.com>,
	Sergej Proskurin <proskurin@sec.in.tum.de>
Subject: [PATCH v5 0/3] Add hvmops for setting and getting the suppress #VE bit
Date: Mon,  3 Sep 2018 18:48:33 +0300	[thread overview]
Message-ID: <20180903154836.25708-1-apop@bitdefender.com> (raw)

As the code stands right now, after DomU has enabled #VE using
HVMOP_altp2m_vcpu_enable_notify, all its pages have the #VE suppress bit
cleared, generating #VEs for any EPT violation.  There is currently no
way to change the value of the #VE suppress bit for a page from a
domain; it can only be done in Xen internally using ept_set_entry().

Following the discussion from
https://lists.xen.org/archives/html/xen-devel/2017-03/msg01312.html these
patches introduce new hvmops for setting and getting this bit and thus

Adrian Pop (3):
  x86/altp2m: Add a hvmop for setting the suppress #VE bit
  x86/altp2m: Add a hvmop for querying the suppress #VE bit

Vlad Ioan Topan (1):
  x86/mm: Change default value for suppress #VE in set_mem_access()

 tools/libxc/include/xenctrl.h   |   4 ++
 tools/libxc/xc_altp2m.c         |  50 ++++++++++++++++
 xen/arch/x86/hvm/hvm.c          |  33 ++++++++++
 xen/arch/x86/mm/mem_access.c    | 103 +++++++++++++++++++++++++++++++-
 xen/include/public/hvm/hvm_op.h |  13 ++++
 xen/include/xen/mem_access.h    |   6 ++
 6 files changed, 207 insertions(+), 2 deletions(-)

-- 
2.18.0


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             reply	other threads:[~2018-09-03 15:48 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-09-03 15:48 Adrian Pop [this message]
2018-09-03 15:48 ` [PATCH v5 1/3] x86/mm: Change default value for suppress #VE in set_mem_access() Adrian Pop
2018-09-11 18:08   ` Tamas K Lengyel
2018-09-12  4:02     ` Adrian Pop
2018-09-03 15:48 ` [PATCH v5 2/3] x86/altp2m: Add a hvmop for setting the suppress #VE bit Adrian Pop
2018-09-20 11:34   ` George Dunlap
2018-09-20 11:38     ` Razvan Cojocaru
2018-09-20 15:52     ` Razvan Cojocaru
     [not found]       ` <CAFLBxZY0am2E01iLpZDcboFG7a1-S47Dwnd-qjp5YqQxGAdejQ@mail.gmail.com>
2018-09-23 16:33         ` George Dunlap
2018-09-23 17:09           ` Razvan Cojocaru
2018-09-03 15:48 ` [PATCH v5 3/3] x86/altp2m: Add a hvmop for querying " Adrian Pop
2018-09-11 18:02   ` Tamas K Lengyel
2018-09-12  4:01     ` Adrian Pop
2018-09-19 14:48   ` Wei Liu
2018-09-20  7:46     ` Razvan Cojocaru
2018-09-20  7:53       ` Wei Liu
2018-09-20  8:38         ` Wei Liu
2018-09-20 12:50   ` George Dunlap
2018-09-21 13:16     ` Razvan Cojocaru
2018-09-21 13:17       ` Razvan Cojocaru

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