Displaying 20 results from an estimated 33 matches for "_page_dirty".
2008 Jan 18
0
[PATCH] minios: support COW for a zero page
...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_ACCESSED|_PAGE_USER)
+#define L1_PROT_RO (_PAGE_PRESENT|_PAGE_ACCESSED|_PAGE_USER)
#define L2_PROT (_PAGE_PRESENT|_PAGE_...
2009 Sep 21
1
[PATCH 2/5] lguest: use set_pte/set_pmd uniformly for real page table entries
...*/
- native_set_pmd(spmd, __pmd(__pa(ptepage) | pmd_flags(gpmd)));
+ set_pmd(spmd, __pmd(__pa(ptepage) | pmd_flags(gpmd)));
}
/*
@@ -447,7 +447,7 @@ bool demand_page(struct lg_cpu *cpu, uns
* we will come back here when a write does actually occur, so
* we can update the Guest's _PAGE_DIRTY flag.
*/
- native_set_pte(spte, gpte_to_spte(cpu, pte_wrprotect(gpte), 0));
+ set_pte(spte, gpte_to_spte(cpu, pte_wrprotect(gpte), 0));
/*
* Finally, we write the Guest PTE entry back: we've set the
@@ -528,7 +528,7 @@ static void release_pmd(pmd_t *spmd)
/* Now we can free the...
2009 Sep 21
1
[PATCH 2/5] lguest: use set_pte/set_pmd uniformly for real page table entries
...*/
- native_set_pmd(spmd, __pmd(__pa(ptepage) | pmd_flags(gpmd)));
+ set_pmd(spmd, __pmd(__pa(ptepage) | pmd_flags(gpmd)));
}
/*
@@ -447,7 +447,7 @@ bool demand_page(struct lg_cpu *cpu, uns
* we will come back here when a write does actually occur, so
* we can update the Guest's _PAGE_DIRTY flag.
*/
- native_set_pte(spte, gpte_to_spte(cpu, pte_wrprotect(gpte), 0));
+ set_pte(spte, gpte_to_spte(cpu, pte_wrprotect(gpte), 0));
/*
* Finally, we write the Guest PTE entry back: we've set the
@@ -528,7 +528,7 @@ static void release_pmd(pmd_t *spmd)
/* Now we can free the...
2008 May 23
0
[PATCH] x86/paravirt: add pte_flags to just get pte flags
...ret;
+}
+
static inline pgd_t __pgd(pgdval_t val)
{
pgdval_t ret;
===================================================================
--- 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) & _...
2008 May 23
0
[PATCH] x86/paravirt: add pte_flags to just get pte flags
...ret;
+}
+
static inline pgd_t __pgd(pgdval_t val)
{
pgdval_t ret;
===================================================================
--- 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) & _...
2005 Mar 14
4
[patch/unstable] page table cleanups
...==
(_PAGE_PRESENT|_PAGE_ACCESSED) ) {
- spte = (mfn << PAGE_SHIFT) | (gpte & ~PAGE_MASK);
+ spte = mk_l1_pgentry((mfn << PAGE_SHIFT) |
+ (l1_pgentry_val(gpte) & ~PAGE_MASK));
- if ( shadow_mode_log_dirty(d) || !(gpte & _PAGE_DIRTY) )
- spte &= ~_PAGE_RW;
+ if ( shadow_mode_log_dirty(d) || !(l1_pgentry_val(gpte) & _PAGE_DIRTY) )
+ l1_pgentry_val(spte) &= ~_PAGE_RW;
}
#if SHADOW_VERBOSE_DEBUG
- if ( old_spte || spte || gpte )
- SH_VVLOG("l1pte_propagate_fr...
2006 Dec 01
1
[PATCH 2/10] Add support for netfront/netback acceleration drivers
...parse/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-sparse/include...
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
2007 Apr 30
0
[PATCH] lguest: properly kill guest userspace programs accessing kernel mem
...ode & 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))
+ if (!page_writable(lg, vaddr) && !demand_page(lg, vad...
2007 Apr 30
0
[PATCH] lguest: properly kill guest userspace programs accessing kernel mem
...ode & 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))
+ if (!page_writable(lg, vaddr) && !demand_page(lg, vad...
2009 Jun 05
1
[PATCH] lguest: PAE support
...entry. */
- 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);...
2009 Jun 05
1
[PATCH] lguest: PAE support
...entry. */
- 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);...
2009 Apr 16
1
NULL pointer dereference at __switch_to() ( __unlazy_fpu ) with lguest PAE patch
...entry. */
- 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)...
2009 Apr 16
1
NULL pointer dereference at __switch_to() ( __unlazy_fpu ) with lguest PAE patch
...entry. */
- 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)...
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
2020 Mar 20
0
[PATCH 2/2] mm/thp: Rename pmd_mknotpresent() as pmd_mknotvalid()
...pgtable.h
+++ b/arch/mips/include/asm/pgtable.h
@@ -615,7 +615,7 @@ static inline pmd_t pmd_modify(pmd_t pmd, pgprot_t newprot)
return pmd;
}
-static inline pmd_t pmd_mknotpresent(pmd_t pmd)
+static inline pmd_t pmd_mknotvalid(pmd_t pmd)
{
pmd_val(pmd) &= ~(_PAGE_PRESENT | _PAGE_VALID | _PAGE_DIRTY);
diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h
index 7e118660bbd9..6279668d430f 100644
--- a/arch/x86/include/asm/pgtable.h
+++ b/arch/x86/include/asm/pgtable.h
@@ -589,7 +589,7 @@ static inline pud_t pfn_pud(unsigned long page_nr, pgprot_t pgprot)
return __pud(p...
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.
2020 Apr 22
1
[PATCH V2 0/2] mm/thp: Rename pmd_mknotpresent() as pmd_mkinvalid()
This series renames pmd_mknotpresent() as pmd_mkinvalid(). Before that it
drops an existing pmd_mknotpresent() definition from powerpc platform which
was never required as it defines it's pmdp_invalidate() through subscribing
__HAVE_ARCH_PMDP_INVALIDATE. This does not create any functional change.
This rename was suggested by Catalin during a previous discussion while we
were trying to change
2020 Mar 20
4
[PATCH 0/2] mm/thp: Rename pmd_mknotpresent() as pmd_mknotvalid()
This series renames pmd_mknotpresent() as pmd_mknotvalid(). Before that it
drops an existing pmd_mknotpresent() definition from powerpc platform which
was never required as it defines it's pmdp_invalidate() through subscribing
__HAVE_ARCH_PMDP_INVALIDATE. This does not create any functional change.
This rename was suggested by Catalin during a previous discussion while we
were trying to
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