search for: unshadowed

The patch deals with the situation which guest OS uses unused page table pages as data pages and write data to them. The pages will still be grabbed by Xen as page table pages, and lots of unnecessary page faults occur. The patch will check if the data guest writes to the page table contains valid mfn or not, if not, we believe it is a data page now and then unshadow the page. The patch

# HG changeset patch # User Xiaofeng Ling <xiaofeng.ling@intel.com> # Node ID cc6e19224d0b755d24358cd15d1a40f894d320b4 # Parent b215584242c43415eccd008b90c812f3d04b398d Don''t unshadow when the shadow l2 is the current used shadow table. Otherwise, when destorying the domain, if the current sl2 is unpinned, the shadow page will be freed without accquire the shadow_lock. This may

We''ve got reports of that change causing HVM data corruption issues. While I can''t see what''s wrong with the patch, I''d suggest at least reverting it from the 3.3 tree (which is what our code is based upon) for the time being. Jan _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com

All, in the light of erratum #573 I''m wondering if we need to tweak or conditionally suppress fsincos emulation. The question is whether there is any possibility for getting the emulator to hit this instruction on AMD (as no real mode emulation ought to be taking place there), i.e. whether there are places where emulation gets continued eagerly in anticipation of the need for emulation

On Fri, Aug 09, 2019 at 07:00:24PM +0300, Adalbert Laz?r wrote: > This patch might be obsolete thanks to single-stepping. sooo should it be skipped from this large patchset to easy review? > > Signed-off-by: Adalbert Laz?r <alazar at bitdefender.com> > --- > arch/x86/kvm/x86.c | 9 +++++++-- > 1 file changed, 7 insertions(+), 2 deletions(-) > > diff --git

...bottom, bottom-right) depeding on the length of the offset-vector being =, < or > to the radius. I am also not sure how to attack the problem of rounded corners of the windows decoration-frame. If the shadow-textures will align with the outter edges of the decoration-frame there will be "unshadowed" gaps at the rounded corners. If I have the shadow-textures overlap a bit inwards it might look funny if the windows opacity changes to transparent. Right now the only solution for this is to fill the inner part of the drop-shadow with a rectangle having the start-color. But this solution caus...

...can unshadow the whole address space at once. Failure to detect when a process is being torn down will cause unnecessary overhead: if the guest pagetables of the destroyed process are recycled as data pages, all writes to the pages will be emulated (in a rather expensive manner) until the page is unshadowed. Even if the guest pagetables are re-used for new process pagetables, constructing the address space will be faster if unshadowed. ************** Code Structure ************** Our code must deal differently with all the different combinations of shadow modes. However, we expect that once a gues...

...OK great. But what does it scan?? - The original purpose of ipd was to scan for phf, which is a well known exploit, so read an advisory if you need any more information. However, the basic engine can be used to scan anything! It''s been rewritten to record Sendmail versions, attempt to get unshadowed password files from anonymous ftp logins, and it could even be setup to attempt to login to servers with default passwords... which ''middlefinger'' does, exploiting finger data. See the next section for more on that. - Information about phf Scanning - ipd us...

Dear All: I am pretty new to xen-devel, please correct me in the following. Assume we have the following terms GPT: guest page table SPT: shadow page table (Question a) When guest OS is running, is it always using SPT for address translation? If it is the case, how does guest OS refer and modify its own GPT content? It seems that there is a page table entry in SPT for the GPT page. (Question

This patch might be obsolete thanks to single-stepping. Signed-off-by: Adalbert Laz?r <alazar at bitdefender.com> --- arch/x86/kvm/x86.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 2c06de73a784..06f44ce8ed07 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -6311,7 +6311,8 @@ static bool

Hi, Just trying to consolidate my knowledge of Dovecot and I want to understand various things rather than just key out lines of config in dovecot.conf with the hope of it working. What I wanted to clarify is my understanding the "socket listen" section of the config file. From my limited understanding, this section details how other processes can access the userdb defined in

Various bugfixes across the board.  The most visible changes include fixing GLX extension setup under Xwayland and other non-Xorg servers (enabling core contexts in more scenarios), and various stability fixes to glamor and the Present extension.  Full change list: Aaron Plattner (1):       privates: Clear screen-specific keys during CloseScreen Adam Jackson (9):       fb: Make rootless-agnostic

Here's 1.18 RC1. Let's figure out when to release this during XDC. Aaron Plattner (3): xfree86: Fix xf86_check_platform_slot's handling of PCI xfree86: Add GPU screens even if there are no active GDevs xfree86: Bump video driver ABI version to 20 Adam Jackson (27): glamor: Fix up indentation xf86Crtc: right-of placement by default. dmx: Fix the

The Wine development release 1.3.24 is now available. What's new in this release (see below for details): - Various DirectInput improvements. - Support for line breaking in Uniscribe. - More UI elements in builtin Shell Explorer. - Some more D3DX9 functions. - Improved support for shell known folders. - Various bug fixes. The source is available from the following locations:

The KVM introspection subsystem provides a facility for applications running on the host or in a separate VM, to control the execution of other VM-s (pause, resume, shutdown), query the state of the vCPUs (GPRs, MSRs etc.), alter the page access bits in the shadow page tables (only for the hardware backed ones, eg. Intel's EPT) and receive notifications when events of interest have taken place

The KVM introspection subsystem provides a facility for applications running on the host or in a separate VM, to control the execution of other VM-s (pause, resume, shutdown), query the state of the vCPUs (GPRs, MSRs etc.), alter the page access bits in the shadow page tables (only for the hardware backed ones, eg. Intel's EPT) and receive notifications when events of interest have taken place