Displaying 20 results from an estimated 28 matches for "_page_accessed".
2008 Jan 18
0
[PATCH] minios: support COW for a zero page
.../mini-os/include/x86/arch_mm.h
--- a/extras/mini-os/include/x86/arch_mm.h Fri Jan 18 15:55:13 2008 +0000
+++ b/extras/mini-os/include/x86/arch_mm.h Fri Jan 18 16:02:32 2008 +0000
@@ -144,12 +144,14 @@ typedef unsigned long pgentry_t;
#if defined(__i386__)
#define L1_PROT (_PAGE_PRESENT|_PAGE_RW|_PAGE_ACCESSED)
+#define L1_PROT_RO (_PAGE_PRESENT|_PAGE_ACCESSED)
#define L2_PROT (_PAGE_PRESENT|_PAGE_RW|_PAGE_ACCESSED|_PAGE_DIRTY |_PAGE_USER)
#if defined(CONFIG_X86_PAE)
#define L3_PROT (_PAGE_PRESENT)
#endif /* CONFIG_X86_PAE */
#elif defined(__x86_64__)
#define L1_PROT (_PAGE_PRESENT|_PAGE_RW|_PAGE_A...
2005 Mar 14
4
[patch/unstable] page table cleanups
...);
+ SH_VVLOG("shadow_l2_normal_pt_update pa=%p, gpde=%p",pa,
+ l1_pgentry_t(gpde));
sl2mfn = __shadow_status(current->domain, pa >> PAGE_SHIFT) & PSH_pfn_mask;
@@ -761,15 +767,15 @@ void shadow_l2_normal_pt_update(unsigned
* Only propagate to shadow if _PAGE_ACCESSED is set in the guest.
* Otherwise, to ensure coherency, we blow away the existing shadow value.
*/
- if ( gpde & _PAGE_ACCESSED )
+ if ( l2_pgentry_val(gpde) & _PAGE_ACCESSED )
{
- sl1mfn = (gpde & _PAGE_PRESENT) ?
- __shadow_status(current->do...
2009 Sep 21
1
[PATCH 2/5] lguest: use set_pte/set_pmd uniformly for real page table entries
...page of PTEs */
free_page((long)ptepage);
/* And zero out the PMD entry so we never release it twice. */
- native_set_pmd(spmd, __pmd(0));
+ set_pmd(spmd, __pmd(0));
}
}
@@ -833,15 +833,15 @@ static void do_set_pte(struct lg_cpu *cp
*/
if (pte_flags(gpte) & (_PAGE_DIRTY | _PAGE_ACCESSED)) {
check_gpte(cpu, gpte);
- native_set_pte(spte,
- gpte_to_spte(cpu, gpte,
+ set_pte(spte,
+ gpte_to_spte(cpu, gpte,
pte_flags(gpte) & _PAGE_DIRTY));
} else {
/*
* Otherwise kill it and we can demand_page()
* it in later.
*/
- native_set...
2009 Sep 21
1
[PATCH 2/5] lguest: use set_pte/set_pmd uniformly for real page table entries
...page of PTEs */
free_page((long)ptepage);
/* And zero out the PMD entry so we never release it twice. */
- native_set_pmd(spmd, __pmd(0));
+ set_pmd(spmd, __pmd(0));
}
}
@@ -833,15 +833,15 @@ static void do_set_pte(struct lg_cpu *cp
*/
if (pte_flags(gpte) & (_PAGE_DIRTY | _PAGE_ACCESSED)) {
check_gpte(cpu, gpte);
- native_set_pte(spte,
- gpte_to_spte(cpu, gpte,
+ set_pte(spte,
+ gpte_to_spte(cpu, gpte,
pte_flags(gpte) & _PAGE_DIRTY));
} else {
/*
* Otherwise kill it and we can demand_page()
* it in later.
*/
- native_set...
2009 Apr 16
1
NULL pointer dereference at __switch_to() ( __unlazy_fpu ) with lguest PAE patch
...pte_t *spte = spte_addr(*spgd, vaddr);
- release_pte(*spte);
-
- /* If they're setting this entry as dirty or accessed, we might
- * as well put that entry they've given us in now. This shaves
- * 10% off a copy-on-write micro-benchmark. */
- if (pte_flags(gpte) & (_PAGE_DIRTY | _PAGE_ACCESSED)) {
- check_gpte(cpu, gpte);
- *spte = gpte_to_spte(cpu, gpte,
- pte_flags(gpte) & _PAGE_DIRTY);
- } else
- /* Otherwise kill it and we can demand_page() it in
- * later. */
- *spte = __pte(0);
+
+#ifdef CONFIG_X86_PAE
+ spmd = spmd_addr(cpu, *spgd, vaddr);
+ if (pmd_flag...
2009 Apr 16
1
NULL pointer dereference at __switch_to() ( __unlazy_fpu ) with lguest PAE patch
...pte_t *spte = spte_addr(*spgd, vaddr);
- release_pte(*spte);
-
- /* If they're setting this entry as dirty or accessed, we might
- * as well put that entry they've given us in now. This shaves
- * 10% off a copy-on-write micro-benchmark. */
- if (pte_flags(gpte) & (_PAGE_DIRTY | _PAGE_ACCESSED)) {
- check_gpte(cpu, gpte);
- *spte = gpte_to_spte(cpu, gpte,
- pte_flags(gpte) & _PAGE_DIRTY);
- } else
- /* Otherwise kill it and we can demand_page() it in
- * later. */
- *spte = __pte(0);
+
+#ifdef CONFIG_X86_PAE
+ spmd = spmd_addr(cpu, *spgd, vaddr);
+ if (pmd_flag...
2008 May 23
0
[PATCH] x86/paravirt: add pte_flags to just get pte flags
...=====
--- a/include/asm-x86/pgtable.h
+++ b/include/asm-x86/pgtable.h
@@ -163,37 +163,37 @@
*/
static inline int pte_dirty(pte_t pte)
{
- return pte_val(pte) & _PAGE_DIRTY;
+ return pte_flags(pte) & _PAGE_DIRTY;
}
static inline int pte_young(pte_t pte)
{
- return pte_val(pte) & _PAGE_ACCESSED;
+ return pte_flags(pte) & _PAGE_ACCESSED;
}
static inline int pte_write(pte_t pte)
{
- return pte_val(pte) & _PAGE_RW;
+ return pte_flags(pte) & _PAGE_RW;
}
static inline int pte_file(pte_t pte)
{
- return pte_val(pte) & _PAGE_FILE;
+ return pte_flags(pte) & _PAGE_FIL...
2008 May 23
0
[PATCH] x86/paravirt: add pte_flags to just get pte flags
...=====
--- a/include/asm-x86/pgtable.h
+++ b/include/asm-x86/pgtable.h
@@ -163,37 +163,37 @@
*/
static inline int pte_dirty(pte_t pte)
{
- return pte_val(pte) & _PAGE_DIRTY;
+ return pte_flags(pte) & _PAGE_DIRTY;
}
static inline int pte_young(pte_t pte)
{
- return pte_val(pte) & _PAGE_ACCESSED;
+ return pte_flags(pte) & _PAGE_ACCESSED;
}
static inline int pte_write(pte_t pte)
{
- return pte_val(pte) & _PAGE_RW;
+ return pte_flags(pte) & _PAGE_RW;
}
static inline int pte_file(pte_t pte)
{
- return pte_val(pte) & _PAGE_FILE;
+ return pte_flags(pte) & _PAGE_FIL...
2006 Dec 01
1
[PATCH 2/10] Add support for netfront/netback acceleration drivers
...a/linux-2.6-xen-sparse/include/asm-i386/mach-xen/asm/pgtable.h Fri
Dec 01 16:21:46 2006 +0000
+++ b/linux-2.6-xen-sparse/include/asm-i386/mach-xen/asm/pgtable.h Fri
Dec 01 16:22:40 2006 +0000
@@ -133,6 +133,7 @@ void paging_init(void);
#define _PAGE_TABLE (_PAGE_PRESENT | _PAGE_RW | _PAGE_USER |
_PAGE_ACCESSED | _PAGE_DIRTY)
#define _KERNPG_TABLE (_PAGE_PRESENT | _PAGE_RW | _PAGE_ACCESSED |
_PAGE_DIRTY)
+#define _KERNPG_TABLE_READONLY (_PAGE_PRESENT | _PAGE_ACCESSED |
_PAGE_DIRTY)
#define _PAGE_CHG_MASK (PTE_MASK | _PAGE_ACCESSED | _PAGE_DIRTY)
#define PAGE_NONE \
diff -r b58bcd6551e2 linux-2.6-xen-...
2008 Jan 05
11
[PATCH] Fix performance problems with mprotect()
While working on a database scaling problem using a SAP database test suite we discovered that these enterprise level large shared memory databases are very heavy users of mprotect(), to the extent that the performance overhead in current Xenolinux impacts scaling beyond a few cpus quite badly. A single cpu run under Xen has a nominal impact, but scaling out to 8 cpus results in a performance of
2005 Jun 15
2
x86_64 - Dom0 will not boot on EMT64
I am unable to boot Dom0 on my IBM eServer BladeCenter HS20, type 8843,
EMT64 blades. I have read reports that Dom0 boots on Opteron boxes, but
on my EMT64 blades, it does not. Has anyone else encountered this
problem on EMT64 hardware?
Here are the errors I am getting:
This is on a SLES 9 box, gcc version 3.3.3 (SuSE Linux):
kernel (hd0,0)/boot/xen.gz dom0_mem=256000 com2=19200,8n1
2007 Apr 30
0
[PATCH] lguest: properly kill guest userspace programs accessing kernel mem
...? */
- if (write && !(gpte.flags & _PAGE_RW))
+ if ((errcode & 2) && !(gpte.flags & _PAGE_RW))
return 0;
+
+ /* User access to a non-user page? */
+ if ((errcode & 4) && !(gpte.flags & _PAGE_USER))
+ return 0;
check_gpte(lg, gpte);
gpte.flags |= _PAGE_ACCESSED;
- if (write)
+ if (errcode & 2)
gpte.flags |= _PAGE_DIRTY;
/* We're done with the old pte. */
@@ -185,7 +200,7 @@ static int page_writable(struct lguest *
void pin_page(struct lguest *lg, unsigned long vaddr)
{
- if (!page_writable(lg, vaddr) && !demand_page(lg, vaddr, 0...
2007 Apr 30
0
[PATCH] lguest: properly kill guest userspace programs accessing kernel mem
...? */
- if (write && !(gpte.flags & _PAGE_RW))
+ if ((errcode & 2) && !(gpte.flags & _PAGE_RW))
return 0;
+
+ /* User access to a non-user page? */
+ if ((errcode & 4) && !(gpte.flags & _PAGE_USER))
+ return 0;
check_gpte(lg, gpte);
gpte.flags |= _PAGE_ACCESSED;
- if (write)
+ if (errcode & 2)
gpte.flags |= _PAGE_DIRTY;
/* We're done with the old pte. */
@@ -185,7 +200,7 @@ static int page_writable(struct lguest *
void pin_page(struct lguest *lg, unsigned long vaddr)
{
- if (!page_writable(lg, vaddr) && !demand_page(lg, vaddr, 0...
2012 Mar 01
14
[PATCH 0 of 3] RFC Paging support for AMD NPT V2
There has been some progress, but still no joy. Definitely not intended for
inclusion at this point.
Tim, Wei, I added a Xen command line toggle to disable IOMMU and P2M table
sharing.
Tim, I verified that changes to p2m-pt.c don''t break shadow mode (64bit
hypervisor and Win 7 guest).
Hongkaixing, I incorporated your suggestion in patch 2, so I should add your
Signed-off-by eventually.
2007 May 09
1
[patch 3/9] lguest: the host code
...PRESENT))
+ return 0;
+
+ /* Write to read-only page? */
+ if ((errcode & 2) && !(gpte.flags & _PAGE_RW))
+ return 0;
+
+ /* User access to a non-user page? */
+ if ((errcode & 4) && !(gpte.flags & _PAGE_USER))
+ return 0;
+
+ check_gpte(lg, gpte);
+ gpte.flags |= _PAGE_ACCESSED;
+ if (errcode & 2)
+ gpte.flags |= _PAGE_DIRTY;
+
+ /* We're done with the old pte. */
+ spte = spte_addr(lg, *spgd, vaddr);
+ release_pte(*spte);
+
+ /* We don't make it writable if this isn't a write: later
+ * write will fault so we can set dirty bit in guest. */
+ if (gpte.fl...
2007 May 09
1
[patch 3/9] lguest: the host code
...PRESENT))
+ return 0;
+
+ /* Write to read-only page? */
+ if ((errcode & 2) && !(gpte.flags & _PAGE_RW))
+ return 0;
+
+ /* User access to a non-user page? */
+ if ((errcode & 4) && !(gpte.flags & _PAGE_USER))
+ return 0;
+
+ check_gpte(lg, gpte);
+ gpte.flags |= _PAGE_ACCESSED;
+ if (errcode & 2)
+ gpte.flags |= _PAGE_DIRTY;
+
+ /* We're done with the old pte. */
+ spte = spte_addr(lg, *spgd, vaddr);
+ release_pte(*spte);
+
+ /* We don't make it writable if this isn't a write: later
+ * write will fault so we can set dirty bit in guest. */
+ if (gpte.fl...
2009 Jun 05
1
[PATCH] lguest: PAE support
...pte_t *spte = spte_addr(*spgd, vaddr);
- release_pte(*spte);
-
- /* If they're setting this entry as dirty or accessed, we might
- * as well put that entry they've given us in now. This shaves
- * 10% off a copy-on-write micro-benchmark. */
- if (pte_flags(gpte) & (_PAGE_DIRTY | _PAGE_ACCESSED)) {
- check_gpte(cpu, gpte);
- *spte = gpte_to_spte(cpu, gpte,
- pte_flags(gpte) & _PAGE_DIRTY);
- } else
- /* Otherwise kill it and we can demand_page() it in
- * later. */
- *spte = __pte(0);
+#ifdef CONFIG_X86_PAE
+ spmd = spmd_addr(cpu, *spgd, vaddr);
+ if (pmd_flags(...
2009 Jun 05
1
[PATCH] lguest: PAE support
...pte_t *spte = spte_addr(*spgd, vaddr);
- release_pte(*spte);
-
- /* If they're setting this entry as dirty or accessed, we might
- * as well put that entry they've given us in now. This shaves
- * 10% off a copy-on-write micro-benchmark. */
- if (pte_flags(gpte) & (_PAGE_DIRTY | _PAGE_ACCESSED)) {
- check_gpte(cpu, gpte);
- *spte = gpte_to_spte(cpu, gpte,
- pte_flags(gpte) & _PAGE_DIRTY);
- } else
- /* Otherwise kill it and we can demand_page() it in
- * later. */
- *spte = __pte(0);
+#ifdef CONFIG_X86_PAE
+ spmd = spmd_addr(cpu, *spgd, vaddr);
+ if (pmd_flags(...
2007 Aug 08
13
[PATCH 0/7] Modify lguest32 to make room for lguest64
Hi all,
I've been working on lguest64 and in order to do this, I had to move
a lot of the i386 specific out of the way. Well, the lguest64 port
is still not ready to display, but before Rusty makes too many changes
I would like this in upstream so I don't have to keep repeating my
changes :-)
So this patch series moves lguest32 out of the way for other archs.
-- Steve
2007 Aug 08
13
[PATCH 0/7] Modify lguest32 to make room for lguest64
Hi all,
I've been working on lguest64 and in order to do this, I had to move
a lot of the i386 specific out of the way. Well, the lguest64 port
is still not ready to display, but before Rusty makes too many changes
I would like this in upstream so I don't have to keep repeating my
changes :-)
So this patch series moves lguest32 out of the way for other archs.
-- Steve