 Home |
Products |
Support |
Community |
News |
xen-devel
[Xen-devel] [PATCH]: Allow HVM guests to use entire address space
| To: | Xen Devel <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | [Xen-devel] [PATCH]: Allow HVM guests to use entire address space |
| From: | Gianni Tedesco <gianni.tedesco@xxxxxxxxxx> |
| Date: | Wed, 10 Nov 2010 13:40:15 +0000 |
| Cc: | Steven Smith <steven.smith@xxxxxxxxxxxxx> |
| Delivery-date: | Wed, 10 Nov 2010 05:40:46 -0800 |
| Envelope-to: | www-data@xxxxxxxxxxxxxxxxxxx |
| List-help: | <mailto:xen-devel-request@lists.xensource.com?subject=help> |
| List-id: | Xen developer discussion <xen-devel.lists.xensource.com> |
| List-post: | <mailto:xen-devel@lists.xensource.com> |
| List-subscribe: | <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe> |
| List-unsubscribe: | <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe> |
| Sender: | xen-devel-bounces@xxxxxxxxxxxxxxxxxxx |
HVM guests are allowed to use the entire virtual address space for
whatever they want, without any Xen hole. __addr_ok() is therefore
always true for such guests.
Signed-off-by: Steven Smith <steven.smith@xxxxxxxxxxxxx>
diff -r 7188d1e4b0e1 xen/include/asm-x86/x86_64/uaccess.h
--- a/xen/include/asm-x86/x86_64/uaccess.h Tue Nov 09 12:00:05 2010 +0000
+++ b/xen/include/asm-x86/x86_64/uaccess.h Wed Nov 10 13:34:52 2010 +0000
@@ -20,7 +20,8 @@ void free_compat_arg_xlat(unsigned int c
* non-canonical address (and thus fault) before ever reaching VIRT_START.
*/
#define __addr_ok(addr) \
- (((unsigned long)(addr) < (1UL<<48)) || \
+ (is_hvm_vcpu(current) || \
+ ((unsigned long)(addr) < (1UL<<48)) || \
((unsigned long)(addr) >= HYPERVISOR_VIRT_END))
#define access_ok(addr, size) \
@@ -30,6 +31,7 @@ void free_compat_arg_xlat(unsigned int c
(access_ok(addr, (count)*(size)))
#define __compat_addr_ok(d, addr) \
+ (is_hvm_vcpu(current) || \
((unsigned long)(addr) < HYPERVISOR_COMPAT_VIRT_START(d))
#define __compat_access_ok(d, addr, size) \
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel
|
| <Prev in Thread] | Current Thread | [Next in Thread> |
|---|---|---|
| ||
| Previous by Date: | Re: [Xen-devel] Problem: WIndows domu switches power off, Keir Fraser |
|---|---|
| Next by Date: | Re: [Xen-devel] [PATCH]: Allow HVM guests to use entire address space, Keir Fraser |
| Previous by Thread: | [Xen-devel] [PATCH]: hvmloader: Don't busy-wait for keystrokes; wait for an interrupt instead, Gianni Tedesco |
| Next by Thread: | Re: [Xen-devel] [PATCH]: Allow HVM guests to use entire address space, Keir Fraser |
| Indexes: | [Date] [Thread] [Top] [All Lists] |
