Displaying 11 results from an estimated 11 matches for "segment_gdt".
2007 Dec 07
2
[PATCH 0/3] Unify segment headers
Hi,
In this patch, I unify segment_32.h and segment_64.h into segment.h
They have some common parts, but a considerable ammount of code still has
to be around ifdefs.
The only patch that is really important to paravirt is the first one, that
moves a paravirt definition into the common header. The other two are just
normal integration, and pretty much independent
2007 Dec 07
2
[PATCH 0/3] Unify segment headers
Hi,
In this patch, I unify segment_32.h and segment_64.h into segment.h
They have some common parts, but a considerable ammount of code still has
to be around ifdefs.
The only patch that is really important to paravirt is the first one, that
moves a paravirt definition into the common header. The other two are just
normal integration, and pretty much independent
2007 Apr 18
1
[PATCH] Slight cleanups for x86 ring macros (against rc3-mm2)
...bits of selector give the ring privilege level */
+#define SEGMENT_RPL_MASK 0x3
+/* Bit 2 is table indicator (LDT/GDT) */
+#define SEGMENT_TI_MASK 0x4
+
+/* User mode is privilege level 3 */
+#define USER_RPL 0x3
+/* LDT segment has TI set, GDT has it cleared */
+#define SEGMENT_LDT 0x4
+#define SEGMENT_GDT 0x0
#define get_kernel_rpl() 0
#endif
--
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2007 Apr 18
1
[PATCH] Slight cleanups for x86 ring macros (against rc3-mm2)
...bits of selector give the ring privilege level */
+#define SEGMENT_RPL_MASK 0x3
+/* Bit 2 is table indicator (LDT/GDT) */
+#define SEGMENT_TI_MASK 0x4
+
+/* User mode is privilege level 3 */
+#define USER_RPL 0x3
+/* LDT segment has TI set, GDT has it cleared */
+#define SEGMENT_LDT 0x4
+#define SEGMENT_GDT 0x0
#define get_kernel_rpl() 0
#endif
--
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2007 Apr 18
2
[patch 3/8] Allow a kernel to not be in ring 0.
In-Reply-To: <20060803002518.190834642@xensource.com>
On Wed, 02 Aug 2006 17:25:13 -0700, Jeremy Fitzhardinge wrote:
> We allow for the fact that the guest kernel may not run in ring 0.
> This requires some abstraction in a few places when setting %cs or
> checking privilege level (user vs kernel).
I made some changes:
a. Added some comments about the SEGMENT_IS_*_CODE() macros.
2007 Apr 18
2
[patch 3/8] Allow a kernel to not be in ring 0.
In-Reply-To: <20060803002518.190834642@xensource.com>
On Wed, 02 Aug 2006 17:25:13 -0700, Jeremy Fitzhardinge wrote:
> We allow for the fact that the guest kernel may not run in ring 0.
> This requires some abstraction in a few places when setting %cs or
> checking privilege level (user vs kernel).
I made some changes:
a. Added some comments about the SEGMENT_IS_*_CODE() macros.
2007 Apr 18
5
[PATCH] paravirt.h
...ot;r" (mask));
-}
-
/* Forward declaration, a strange C thing */
struct task_struct;
struct mm_struct;
===================================================================
--- a/include/asm-i386/segment.h
+++ b/include/asm-i386/segment.h
@@ -128,5 +128,7 @@
#define SEGMENT_LDT 0x4
#define SEGMENT_GDT 0x0
+#ifndef CONFIG_PARAVIRT
#define get_kernel_rpl() 0
#endif
+#endif
===================================================================
--- a/include/asm-i386/spinlock.h
+++ b/include/asm-i386/spinlock.h
@@ -17,8 +17,12 @@
* (the type definitions are in asm/spinlock_types.h)
*/
+#ifd...
2007 Apr 18
5
[PATCH] paravirt.h
...ot;r" (mask));
-}
-
/* Forward declaration, a strange C thing */
struct task_struct;
struct mm_struct;
===================================================================
--- a/include/asm-i386/segment.h
+++ b/include/asm-i386/segment.h
@@ -128,5 +128,7 @@
#define SEGMENT_LDT 0x4
#define SEGMENT_GDT 0x0
+#ifndef CONFIG_PARAVIRT
#define get_kernel_rpl() 0
#endif
+#endif
===================================================================
--- a/include/asm-i386/spinlock.h
+++ b/include/asm-i386/spinlock.h
@@ -17,8 +17,12 @@
* (the type definitions are in asm/spinlock_types.h)
*/
+#ifd...
2007 Apr 18
3
[PATCH 1/2] paravirt.h header
OK, this is the revised paravirt.h (Andi has seen this before), then the
second is the binary patching stuff. More things get added to the
paravirt struct in future patches, but this basic stuff hasn't changed
for some time.
====
This patch does the dumbest possible replacement of paravirtualized
instructions: calls through a "paravirt_ops" structure. Currently
these are function
2007 Apr 18
8
[PATCH 0/7] x86 paravirtualization infrastructure
The following patches introduce the core infrastructure needed to
paravirtualize the 32-bit x86 Linux kernel. This is done by moving
virtualization sensitive insn's or code paths to a function table,
paravirt_ops. This structure can be populated with hypervisor specific
calls or native stubs and currently support running on bare metal, VMI,
Xen, or Lhype. These patches apply to
2007 Apr 18
8
[PATCH 0/7] x86 paravirtualization infrastructure
The following patches introduce the core infrastructure needed to
paravirtualize the 32-bit x86 Linux kernel. This is done by moving
virtualization sensitive insn's or code paths to a function table,
paravirt_ops. This structure can be populated with hypervisor specific
calls or native stubs and currently support running on bare metal, VMI,
Xen, or Lhype. These patches apply to