search for: pgd_cache

...page(pmd)); set_pgd(&pgd[i], __pgd(1 + __pa(pmd))); } return pgd; out_oom: - for (i--; i >= 0; i--) + for (i--; i >= 0; i--) { + ClearPagePDE(pfn_to_page(pgd_val(pgd[i]) >> PAGE_SHIFT)); kmem_cache_free(pmd_cache, (void *)__va(pgd_val(pgd[i])-1)); + } kmem_cache_free(pgd_cache, pgd); return NULL; } @@ -261,8 +266,10 @@ void pgd_free(pgd_t *pgd) /* in the PAE case user pgd entries are overwritten before usage */ if (PTRS_PER_PMD > 1) - for (i = 0; i < USER_PTRS_PER_PGD; ++i) - kmem_cache_free(pmd_cache, (void *)__va(pgd_val(pgd[i])-1)); + for (i = 0; i...

...page(pmd)); set_pgd(&pgd[i], __pgd(1 + __pa(pmd))); } return pgd; out_oom: - for (i--; i >= 0; i--) + for (i--; i >= 0; i--) { + ClearPagePDE(pfn_to_page(pgd_val(pgd[i]) >> PAGE_SHIFT)); kmem_cache_free(pmd_cache, (void *)__va(pgd_val(pgd[i])-1)); + } kmem_cache_free(pgd_cache, pgd); return NULL; } @@ -261,8 +266,10 @@ void pgd_free(pgd_t *pgd) /* in the PAE case user pgd entries are overwritten before usage */ if (PTRS_PER_PMD > 1) - for (i = 0; i < USER_PTRS_PER_PGD; ++i) - kmem_cache_free(pmd_cache, (void *)__va(pgd_val(pgd[i])-1)); + for (i = 0; i...

...(pmd))); } return pgd; out_oom: for (i--; i >= 0; i--) { ClearPagePDE(pfn_to_page(pgd_val(pgd[i]) >> PAGE_SHIFT)); - kmem_cache_free(pmd_cache, (void *)__va(pgd_val(pgd[i])-1)); + kmem_cache_free(pmd_cache, (void *)__va(pgd_val(pgd[i]) & PAGE_MASK)); } kmem_cache_free(pgd_cache, pgd); return NULL; @@ -268,7 +268,7 @@ void pgd_free(pgd_t *pgd) if (PTRS_PER_PMD > 1) for (i = 0; i < USER_PTRS_PER_PGD; ++i) { ClearPagePDE(pfn_to_page(pgd_val(pgd[i]) >> PAGE_SHIFT)); - kmem_cache_free(pmd_cache, (void *)__va(pgd_val(pgd[i])-1)); + kmem_cache_free(pmd...

...(pmd))); } return pgd; out_oom: for (i--; i >= 0; i--) { ClearPagePDE(pfn_to_page(pgd_val(pgd[i]) >> PAGE_SHIFT)); - kmem_cache_free(pmd_cache, (void *)__va(pgd_val(pgd[i])-1)); + kmem_cache_free(pmd_cache, (void *)__va(pgd_val(pgd[i]) & PAGE_MASK)); } kmem_cache_free(pgd_cache, pgd); return NULL; @@ -268,7 +268,7 @@ void pgd_free(pgd_t *pgd) if (PTRS_PER_PMD > 1) for (i = 0; i < USER_PTRS_PER_PGD; ++i) { ClearPagePDE(pfn_to_page(pgd_val(pgd[i]) >> PAGE_SHIFT)); - kmem_cache_free(pmd_cache, (void *)__va(pgd_val(pgd[i])-1)); + kmem_cache_free(pmd...

...-; i >= 0; i--) - kmem_cache_free(pmd_cache, (void *)__va(pgd_val(pgd[i])-1)); + for (i--; i >= 0; i--) { + pgd_t pgdent = pgd[i]; + void* pmd = (void *)__va(pgd_val(pgdent)-1); + paravirt_release_pd(__pa(pmd) >> PAGE_SHIFT); + kmem_cache_free(pmd_cache, pmd); + } kmem_cache_free(pgd_cache, pgd); return NULL; } @@ -291,8 +303,12 @@ void pgd_free(pgd_t *pgd) /* in the PAE case user pgd entries are overwritten before usage */ if (PTRS_PER_PMD > 1) - for (i = 0; i < USER_PTRS_PER_PGD; ++i) - kmem_cache_free(pmd_cache, (void *)__va(pgd_val(pgd[i])-1)); + for (i = 0; i...

...-; i >= 0; i--) - kmem_cache_free(pmd_cache, (void *)__va(pgd_val(pgd[i])-1)); + for (i--; i >= 0; i--) { + pgd_t pgdent = pgd[i]; + void* pmd = (void *)__va(pgd_val(pgdent)-1); + paravirt_release_pd(__pa(pmd) >> PAGE_SHIFT); + kmem_cache_free(pmd_cache, pmd); + } kmem_cache_free(pgd_cache, pgd); return NULL; } @@ -291,8 +303,12 @@ void pgd_free(pgd_t *pgd) /* in the PAE case user pgd entries are overwritten before usage */ if (PTRS_PER_PMD > 1) - for (i = 0; i < USER_PTRS_PER_PGD; ++i) - kmem_cache_free(pmd_cache, (void *)__va(pgd_val(pgd[i])-1)); + for (i = 0; i...

...-; i >= 0; i--) - kmem_cache_free(pmd_cache, (void *)__va(pgd_val(pgd[i])-1)); + for (i--; i >= 0; i--) { + pgd_t pgdent = pgd[i]; + void* pmd = (void *)__va(pgd_val(pgdent)-1); + paravirt_release_pd(__pa(pmd) >> PAGE_SHIFT); + kmem_cache_free(pmd_cache, pmd); + } kmem_cache_free(pgd_cache, pgd); return NULL; } @@ -291,8 +303,12 @@ void pgd_free(pgd_t *pgd) /* in the PAE case user pgd entries are overwritten before usage */ if (PTRS_PER_PMD > 1) - for (i = 0; i < USER_PTRS_PER_PGD; ++i) - kmem_cache_free(pmd_cache, (void *)__va(pgd_val(pgd[i])-1)); + for (i = 0; i...

...-; i >= 0; i--) - kmem_cache_free(pmd_cache, (void *)__va(pgd_val(pgd[i])-1)); + for (i--; i >= 0; i--) { + pgd_t pgdent = pgd[i]; + void* pmd = (void *)__va(pgd_val(pgdent)-1); + paravirt_release_pd(__pa(pmd) >> PAGE_SHIFT); + kmem_cache_free(pmd_cache, pmd); + } kmem_cache_free(pgd_cache, pgd); return NULL; } @@ -291,8 +303,12 @@ void pgd_free(pgd_t *pgd) /* in the PAE case user pgd entries are overwritten before usage */ if (PTRS_PER_PMD > 1) - for (i = 0; i < USER_PTRS_PER_PGD; ++i) - kmem_cache_free(pmd_cache, (void *)__va(pgd_val(pgd[i])-1)); + for (i = 0; i...

Is there any real use in having a ctor/dtor for the pgd cache? Given that all pgd allocation happens via pgd_alloc/pgd_free, why not just fold the [cd]tor in? I'm asking because Xen wants pgd[3] to be unshared in the PAE case, and it looks to me like the easiest way to handle that is by making pgd_alloc/free pv-ops and doing the appropriate thing in the Xen code. Would need to sort out the

Is there any real use in having a ctor/dtor for the pgd cache? Given that all pgd allocation happens via pgd_alloc/pgd_free, why not just fold the [cd]tor in? I'm asking because Xen wants pgd[3] to be unshared in the PAE case, and it looks to me like the easiest way to handle that is by making pgd_alloc/free pv-ops and doing the appropriate thing in the Xen code. Would need to sort out the

...================================ --- linux-2.6.16-rc5.orig/arch/i386/mm/pgtable.c 2006-03-10 12:55:05.000000000 -0800 +++ linux-2.6.16-rc5/arch/i386/mm/pgtable.c 2006-03-10 15:57:08.000000000 -0800 @@ -240,20 +240,37 @@ pgd_t *pgd_alloc(struct mm_struct *mm) int i; pgd_t *pgd = kmem_cache_alloc(pgd_cache, GFP_KERNEL); - if (PTRS_PER_PMD == 1 || !pgd) + if (!pgd) return pgd; + if (PTRS_PER_PMD == 1) { + mach_setup_pgd(__pa(pgd) >> PAGE_SHIFT, + __pa(swapper_pg_dir) >> PAGE_SHIFT, + USER_PTRS_PER_PGD, +...

...================================ --- linux-2.6.16-rc5.orig/arch/i386/mm/pgtable.c 2006-03-10 12:55:05.000000000 -0800 +++ linux-2.6.16-rc5/arch/i386/mm/pgtable.c 2006-03-10 15:57:08.000000000 -0800 @@ -240,20 +240,37 @@ pgd_t *pgd_alloc(struct mm_struct *mm) int i; pgd_t *pgd = kmem_cache_alloc(pgd_cache, GFP_KERNEL); - if (PTRS_PER_PMD == 1 || !pgd) + if (!pgd) return pgd; + if (PTRS_PER_PMD == 1) { + mach_setup_pgd(__pa(pgd) >> PAGE_SHIFT, + __pa(swapper_pg_dir) >> PAGE_SHIFT, + USER_PTRS_PER_PGD, +...

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

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

This patch series implements the Linux Xen guest in terms of the paravirt-ops interface. The features in implemented this patch series are: * domU only * UP only (most code is SMP-safe, but there's no way to create a new vcpu) * writable pagetables, with late pinning/early unpinning (no shadow pagetable support) * supports both PAE and non-PAE modes * xen console * virtual block

This patch series implements the Linux Xen guest in terms of the paravirt-ops interface. The features in implemented this patch series are: * domU only * UP only (most code is SMP-safe, but there's no way to create a new vcpu) * writable pagetables, with late pinning/early unpinning (no shadow pagetable support) * supports both PAE and non-PAE modes * xen console * virtual block

This patch series implements the Linux Xen guest in terms of the paravirt-ops interface. The features in implemented this patch series are: * domU only * UP only (most code is SMP-safe, but there's no way to create a new vcpu) * writable pagetables, with late pinning/early unpinning (no shadow pagetable support) * supports both PAE and non-PAE modes * xen console * virtual block

Hi Andi, This patch series implements the Linux Xen guest in terms of the paravirt-ops interface. The features in implemented this patch series are: * domU only * UP only (most code is SMP-safe, but there's no way to create a new vcpu) * writable pagetables, with late pinning/early unpinning (no shadow pagetable support) * supports both PAE and non-PAE modes * xen console * virtual