Hi all
when there is a page fault the mmu stroes the virtual address that made
the page fault in the cr2 register right?
In xen this address is found in page fault handling routine
do_page_fault in arch/x86/traps.c addr = read_cr2().
I want to get the page table entry associated with this virtu
Hi
I want to toggle user/sypervisor priviledge bit in page table entry
associated to a given
this page. But I my code does'nt work. I have plenty buggs.
here is the method used to set access to hypervisor level
void remove_access(l1_pgentry_t *pl1e){
l1_pgentry_t ol1e;
l1_pgentry_t nl1e;
unsign
Hi
I compile and install linux kernel 3.4 but when booting I don't see
this kernel in the grub submenu of xen version 4.2.0.
Does it means that there is a minimum version of linux kernel that xen
4.2.0 can supprort?
Thanks
Hannas
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Hello
I am working on xen front|backend driver. When I run io operations
sometime the request type is indirect request sometimes it is
read|write request. I don't know what differnces exists beetween these
types of operations.
Can some body explain me?
Thanks
HANNAS
_
Got it. Thank you
Hannas
On Tue, 19 May 2015 17:41:41 +0200, Roger Pau Monné wrote:
El 19/05/15 a les 16.17, HANNAS YAYA Issa ha escrit:
Hi
I want to disable persistent grant in xen. I tried to use xenbus to
disable it. What I did is modifying this line in
drivers/block/xenblkback/xenbus.c
Hi
I want to disable persistent grant in xen. I tried to use xenbus to
disable it. What I did is modifying this line in
drivers/block/xenblkback/xenbus.c:
791 err = xenbus_printf(xbt, dev->nodename, "feature-persistent", "%u",
1);
and put this
791 err = xenbus_printf(xbt, dev->nodename, "
Hi
I really really need help. I continue trying to make it work but
nothing change.
Please I need help :(
On Sat, 18 Apr 2015 19:25:52 +0200, HANNAS YAYA Issa wrote:
Hi I am working in a research project
I want to incercept pages access by guest virtual machine.
My approach is setting
Hi I am working in a research project
I want to incercept pages access by guest virtual machine.
My approach is setting higher priviledge in pages by setting changing
the user/sypervisor priviledge bit in page table entry associated to
this page. Here is the piece of code used
void remove_acc
Hi
I want to get the maximum and the minimum value of machine frame
number. I know that the variable total_pages contains the value of the
total number of the pages but I wonder why the machine frame number is
not between 0 and total_pages
Thank you
Hi
I want to remove entry of a given page in the shadow page table so that
when the next time the guest access to the page there is page fault.
Here is what I try to do:
1. I have a timer which wake up every 30 seconds and remove entry in
the shadow by calling
sh_remove_all_mappings(d->vcpu[0
Thank you a lot Tim.Your Method which consist of using shadow page
table help me.
However when I use the method shadow_blow_tables() I don't think it
makes all page unavailable.
because the the number of page fault (I get it from sh_page_fault) does
not seem to increase.
when shadow_blow_table
Hi
I am working on memory management in xen. I encounter a problem that I
hope you can help me to solve it.
I modified the struct mmu_update in xen and linux source code. I add
two fields cr3 and addr which respectively contains the current cr3
value and the current address of the process assoc
Hi
I am working on memory management in xen. I encounter a problem that I
hope you can help me to solve it.
I modified the struct mmu_update in xen and linux source code. I add
two fields cr3 and addr which respectively contains the current cr3
value
__
Ok. thank you
On Tue, 31 Mar 2015 10:26:06 +0100, George Dunlap wrote:
On Mon, Mar 30, 2015 at 3:00 PM, HANNAS YAYA Issa
wrote:
Hi
When there is a page fault the trapper of the page fault in the
hypervisor
is do_page_fault in xen/arch/x86/traps.c right?
That's for PV guests. Fo
Hi
When there is a page fault the trapper of the page fault in the
hypervisor is do_page_fault in xen/arch/x86/traps.c right?
in this funcion i found a method read_cr2() which return the virtual
adrress of the page who generate the page fault.
My question is : is it possible to get the machine a
Hi
Is it possible to mark guest page table entry abscent (I mean clear the
Presence bit) from the hypervisor.
If yes How can this be done
Thank you
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Hello
Is it possible to generate a random number in xen source code?
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Hi
Is it possible to swap out guest physical page from hypervisor in xen
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Hello
I want to implement in xen hypervisor but I don't know how to do it. I
search in google but I do not found how to use the xen timer (not
linux).
when I compile xen the timer run only once. here is my code.
static void timer_handler(void *unused)
{
printk("hello world in timer\n")
On Thu, 19 Mar 2015 16:35:43 +, Ian Campbell wrote:
On Thu, 2015-03-19 at 17:04 +0100, HANNAS YAYA Issa wrote:
Please ask user configuration questions on the xen-users list, this
list
is for development topics.
Perhaps also check your favourite search engine before doing so.
Ian.
Hi
Hi
when I run xen-access test (tools/tests/xen-access) I got the following
error
xc: error: EPT not supported for this guest: Internal error
Please can you explain me how to enable EPT in guest
Thanks
Hannas
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Hello
Today I'm working on virtual machines working set size tracking in xen
hypervisor.
I follow the vmware approch I read in this article:
https://www.google.fr/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&sqi=2&ved=0CCEQFjAA&url=https%3A%2F%2Fwww.usenix.org%2Fevents%2Fosdi02%2Ftech%2Fwaldspurger
Hello guys.
I start to develop in xen hypervisor no so long. I work on memory. in
the source codes I read maddr, paddr, pfn and mdfn.
please can someone explain me the differences between these concepts in
xen hypervisor.
Thank you
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Hello
I want to know when there is context switch between processes in guest
the xen hypervisor can handle this switch.
Is there any possibility to get this context switch from hypervisor?
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