search for: pte_t

...---- 6 files changed, 4 insertions(+), 42 deletions(-) diff --git a/arch/x86/include/asm/paravirt.h b/arch/x86/include/asm/paravirt.h index e02c409fa054..f0464b88ea1e 100644 --- a/arch/x86/include/asm/paravirt.h +++ b/arch/x86/include/asm/paravirt.h @@ -412,12 +412,6 @@ static inline void set_pte(pte_t *ptep, pte_t pte) PVOP_VCALL2(mmu.set_pte, ptep, pte.pte); } -static inline void set_pte_at(struct mm_struct *mm, unsigned long addr, - pte_t *ptep, pte_t pte) -{ - PVOP_VCALL4(mmu.set_pte_at, mm, addr, ptep, pte.pte); -} - static inline void set_pmd(pmd_t *pmdp, pmd_t pmd) { PVOP_...

Hey folks, This is the part-of-pvops-implementation-that-is-not-exactly-a-merge. Neat, uh? This is the majority of the work. The first patch in the series does not really belong here. It was already sent to lkml separetedly before, but I'm including it again, for a very simple reason: Try to test the paravirt patches without it, and you'll fail miserably ;-) (and it was not yet

Hey folks, This is the part-of-pvops-implementation-that-is-not-exactly-a-merge. Neat, uh? This is the majority of the work. The first patch in the series does not really belong here. It was already sent to lkml separetedly before, but I'm including it again, for a very simple reason: Try to test the paravirt patches without it, and you'll fail miserably ;-) (and it was not yet

...6/pgtable-2level.h --- a/include/asm-i386/pgtable-2level.h Wed Apr 11 18:23:44 2007 -0700 +++ b/include/asm-i386/pgtable-2level.h Wed Apr 11 18:24:07 2007 -0700 @@ -39,16 +39,6 @@ static inline void native_pte_clear(stru static inline void native_pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *xp) { *xp = __pte(0); -} - -/* local pte updates need not use xchg for locking */ -static inline pte_t native_local_ptep_get_and_clear(pte_t *ptep) -{ - pte_t res; - - res = *ptep; - native_pte_clear(NULL, 0, ptep); - return res; } #ifdef CONFIG_SMP diff -r b3bbc1b5e085 include/asm-i386/pgt...

...6/pgtable-2level.h --- a/include/asm-i386/pgtable-2level.h Wed Apr 11 18:23:44 2007 -0700 +++ b/include/asm-i386/pgtable-2level.h Wed Apr 11 18:24:07 2007 -0700 @@ -39,16 +39,6 @@ static inline void native_pte_clear(stru static inline void native_pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *xp) { *xp = __pte(0); -} - -/* local pte updates need not use xchg for locking */ -static inline pte_t native_local_ptep_get_and_clear(pte_t *ptep) -{ - pte_t res; - - res = *ptep; - native_pte_clear(NULL, 0, ptep); - return res; } #ifdef CONFIG_SMP diff -r b3bbc1b5e085 include/asm-i386/pgt...

...p_atomic, #endif diff -r c02c6f5e882c include/asm-i386/paravirt.h --- a/include/asm-i386/paravirt.h Wed Apr 11 16:25:09 2007 -0700 +++ b/include/asm-i386/paravirt.h Wed Apr 11 17:12:03 2007 -0700 @@ -187,8 +187,6 @@ struct paravirt_ops void (*pte_update)(struct mm_struct *mm, unsigned long addr, pte_t *ptep); void (*pte_update_defer)(struct mm_struct *mm, unsigned long addr, pte_t *ptep); - - pte_t (*ptep_get_and_clear)(pte_t *ptep); #ifdef CONFIG_HIGHPTE void *(*kmap_atomic_pte)(struct page *page, enum km_type type); @@ -859,12 +857,8 @@ static inline void pmd_clear(pmd_t *pmdp...

...p_atomic, #endif diff -r c02c6f5e882c include/asm-i386/paravirt.h --- a/include/asm-i386/paravirt.h Wed Apr 11 16:25:09 2007 -0700 +++ b/include/asm-i386/paravirt.h Wed Apr 11 17:12:03 2007 -0700 @@ -187,8 +187,6 @@ struct paravirt_ops void (*pte_update)(struct mm_struct *mm, unsigned long addr, pte_t *ptep); void (*pte_update_defer)(struct mm_struct *mm, unsigned long addr, pte_t *ptep); - - pte_t (*ptep_get_and_clear)(pte_t *ptep); #ifdef CONFIG_HIGHPTE void *(*kmap_atomic_pte)(struct page *page, enum km_type type); @@ -859,12 +857,8 @@ static inline void pmd_clear(pmd_t *pmdp...

A lot of cleanup after removal of 32-bit Xen PV guest support in paravirt code. Changes in V4: - dropped patches 1-3, as already committed - addressed comments to V3 - added new patches 5+6 Changes in V3: - addressed comments to V2 - split patch 1 into 2 patches - new patches 3 and 7 Changes in V2: - rebase to 5.8 kernel - addressed comments to V1 - new patches 3 and 4 Juergen Gross (6):

...l.h --- a/include/asm-i386/pgtable-2level.h Wed Apr 11 18:23:01 2007 -0700 +++ b/include/asm-i386/pgtable-2level.h Wed Apr 11 18:23:39 2007 -0700 @@ -41,10 +41,24 @@ static inline void native_pte_clear(stru *xp = __pte(0); } +/* local pte updates need not use xchg for locking */ +static inline pte_t native_local_ptep_get_and_clear(pte_t *ptep) +{ + pte_t res; + + res = *ptep; + native_pte_clear(NULL, 0, ptep); + return res; +} + +#ifdef CONFIG_SMP static inline pte_t native_ptep_get_and_clear(pte_t *xp) { return __pte(xchg(&xp->pte_low, 0)); } +#else +#define native_ptep_get_and_cl...

...l.h --- a/include/asm-i386/pgtable-2level.h Wed Apr 11 18:23:01 2007 -0700 +++ b/include/asm-i386/pgtable-2level.h Wed Apr 11 18:23:39 2007 -0700 @@ -41,10 +41,24 @@ static inline void native_pte_clear(stru *xp = __pte(0); } +/* local pte updates need not use xchg for locking */ +static inline pte_t native_local_ptep_get_and_clear(pte_t *ptep) +{ + pte_t res; + + res = *ptep; + native_pte_clear(NULL, 0, ptep); + return res; +} + +#ifdef CONFIG_SMP static inline pte_t native_ptep_get_and_clear(pte_t *xp) { return __pte(xchg(&xp->pte_low, 0)); } +#else +#define native_ptep_get_and_cl...

Hi all, [ Change since last post: change name to ptep_modify_prot_, on the grounds that it isn't really a general pte-modification interface. ] This little series adds a new transaction-like abstraction for doing RMW updates to a pte, hooks it into paravirt_ops, and then makes use of it in Xen. The basic problem is that mprotect is very slow under Xen (up to 50x slower than native),

Hi all, [ Change since last post: change name to ptep_modify_prot_, on the grounds that it isn't really a general pte-modification interface. ] This little series adds a new transaction-like abstraction for doing RMW updates to a pte, hooks it into paravirt_ops, and then makes use of it in Xen. The basic problem is that mprotect is very slow under Xen (up to 50x slower than native),

Hi all, [ Change since last post: change name to ptep_modify_prot_, on the grounds that it isn't really a general pte-modification interface. ] This little series adds a new transaction-like abstraction for doing RMW updates to a pte, hooks it into paravirt_ops, and then makes use of it in Xen. The basic problem is that mprotect is very slow under Xen (up to 50x slower than native),

Hi Andi, This series of patches updates paravirt_ops in various ways. Some of the changes are plain cleanups and improvements, and some add some interfaces necessary for Xen. The brief overview: add-MAINTAINERS.patch - obvious remove-CONFIG_DEBUG_PARAVIRT.patch - no longer needed paravirt-nop.patch - mark nop operations consistently paravirt-pte-accessors.patch - operations to pack/unpack

Hi Andi, This series of patches updates paravirt_ops in various ways. Some of the changes are plain cleanups and improvements, and some add some interfaces necessary for Xen. The brief overview: add-MAINTAINERS.patch - obvious remove-CONFIG_DEBUG_PARAVIRT.patch - no longer needed paravirt-nop.patch - mark nop operations consistently paravirt-pte-accessors.patch - operations to pack/unpack

...pte_val(x) +#define pte_flags(x) native_pte_val(x) #define __pte(x) native_make_pte(x) #endif /* CONFIG_PARAVIRT */ =================================================================== --- a/include/asm-x86/paravirt.h +++ b/include/asm-x86/paravirt.h @@ -240,6 +240,7 @@ unsigned long addr, pte_t *ptep); pteval_t (*pte_val)(pte_t); + pteval_t (*pte_flags)(pte_t); pte_t (*make_pte)(pteval_t pte); pgdval_t (*pgd_val)(pgd_t); @@ -997,6 +998,20 @@ return ret; } +static inline pteval_t pte_flags(pte_t pte) +{ + pteval_t ret; + + if (sizeof(pteval_t) > sizeof(long)) + ret = PVO...

...pte_val(x) +#define pte_flags(x) native_pte_val(x) #define __pte(x) native_make_pte(x) #endif /* CONFIG_PARAVIRT */ =================================================================== --- a/include/asm-x86/paravirt.h +++ b/include/asm-x86/paravirt.h @@ -240,6 +240,7 @@ unsigned long addr, pte_t *ptep); pteval_t (*pte_val)(pte_t); + pteval_t (*pte_flags)(pte_t); pte_t (*make_pte)(pteval_t pte); pgdval_t (*pgd_val)(pgd_t); @@ -997,6 +998,20 @@ return ret; } +static inline pteval_t pte_flags(pte_t pte) +{ + pteval_t ret; + + if (sizeof(pteval_t) > sizeof(long)) + ret = PVO...

Hi Andi, Here's a repost of the paravirt_ops update series I posted the other day. Since then, I found a few potential bugs with patching clobbering, cleaned up and documented paravirt.h and the patching machinery. Overview: add-MAINTAINERS.patch obvious remove-CONFIG_DEBUG_PARAVIRT.patch No longer meaningful or needed. paravirt-nop.patch Clean up nop paravirt_ops functions, mainly to

Hi Andi, Here's a repost of the paravirt_ops update series I posted the other day. Since then, I found a few potential bugs with patching clobbering, cleaned up and documented paravirt.h and the patching machinery. Overview: add-MAINTAINERS.patch obvious remove-CONFIG_DEBUG_PARAVIRT.patch No longer meaningful or needed. paravirt-nop.patch Clean up nop paravirt_ops functions, mainly to

...nit.c 2006-03-10 12:55:05.000000000 -0800 +++ linux-2.6.16-rc5/arch/i386/mm/init.c 2006-03-10 15:57:08.000000000 -0800 @@ -69,7 +69,6 @@ static pmd_t * __init one_md_table_init( pud = pud_offset(pgd, 0); pmd_table = pmd_offset(pud, 0); #endif - return pmd_table; } @@ -81,6 +80,7 @@ static pte_t * __init one_page_table_ini { if (pmd_none(*pmd)) { pte_t *page_table = (pte_t *) alloc_bootmem_low_pages(PAGE_SIZE); + mach_setup_pte(__pa(page_table) >> PAGE_SHIFT); set_pmd(pmd, __pmd(__pa(page_table) | _PAGE_TABLE)); if (page_table != pte_offset_kernel(pmd, 0)) BUG(); @@...