Displaying 3 results from an estimated 3 matches for "sh_x86_emulate_write".
2008 Jun 06
4
Query regarding x86_emulate_memop() function
Hi there,
I have a question regarding the functionality of x86_emulate_memop (Xen 3.1) or x86_emulate (Xen 3.2) function. This function gets called from sh_page_fault() function which is invoked when Xen receives a page fault.
Since I am not clear completely about the emulation operation performed by Xen, I have following questions with a below mentioned scenario?
1) Suppose I have a memory
2007 Dec 05
13
[PATCH] unshadow the page table page which are used as data page
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
2008 Apr 21
1
[PATCH] x86-64: emulation support for cmpxchg16b
...shadow_unlock(v->domain);
return rv;
}
+#endif
/**************************************************************************/
@@ -4738,7 +4740,9 @@ struct paging_mode sh_paging_mode = {
.shadow.detach_old_tables = sh_detach_old_tables,
.shadow.x86_emulate_write = sh_x86_emulate_write,
.shadow.x86_emulate_cmpxchg = sh_x86_emulate_cmpxchg,
+#ifdef __i386__
.shadow.x86_emulate_cmpxchg8b = sh_x86_emulate_cmpxchg8b,
+#endif
.shadow.make_monitor_table = sh_make_monitor_table,
.shadow.destroy_monitor_table = sh_destroy_monitor_table,
#if SHADOW_OPTIMIZATI...