search for: km_pte0

...updates. By the time MMU updates + * are issued, this information is typically already lost. + * Fortunately, the VMI provides a cache of mapping slots for active + * page tables. + * + * We use slot zero for the linear mapping of physical memory, and + * in HIGHPTE kernels, slot 1 and 2 for KM_PTE0 and KM_PTE1. + * + * args: SLOT VA COUNT PFN + */ + BUG_ON(type != KM_PTE0 && type != KM_PTE1); + vmi_ops.set_linear_mapping((type - KM_PTE0)+1, (u32)va, 1, pfn); +} + static void vmi_allocate_pt(u32 pfn) { vmi_set_page_type(pfn, VMI_PAGE_L1); @@...

...updates. By the time MMU updates + * are issued, this information is typically already lost. + * Fortunately, the VMI provides a cache of mapping slots for active + * page tables. + * + * We use slot zero for the linear mapping of physical memory, and + * in HIGHPTE kernels, slot 1 and 2 for KM_PTE0 and KM_PTE1. + * + * args: SLOT VA COUNT PFN + */ + BUG_ON(type != KM_PTE0 && type != KM_PTE1); + vmi_ops.set_linear_mapping((type - KM_PTE0)+1, (u32)va, 1, pfn); +} + static void vmi_allocate_pt(u32 pfn) { vmi_set_page_type(pfn, VMI_PAGE_L1); @@...

...type); + /* * Internally, the VMI ROM must map virtual addresses to physical * addresses for processing MMU updates. By the time MMU updates @@ -360,8 +364,11 @@ static void vmi_map_pt_hook(int type, pt * args: SLOT VA COUNT PFN */ BUG_ON(type != KM_PTE0 && type != KM_PTE1); - vmi_ops.set_linear_mapping((type - KM_PTE0)+1, (u32)va, 1, pfn); -} + vmi_ops.set_linear_mapping((type - KM_PTE0)+1, va, 1, page_to_pfn(page)); + + return va; +} +#endif static void vmi_allocate_pt(u32 pfn) { @@ -656,7 +663,7 @@ void vmi_bringup(void) { /* We...

...type); + /* * Internally, the VMI ROM must map virtual addresses to physical * addresses for processing MMU updates. By the time MMU updates @@ -360,8 +364,11 @@ static void vmi_map_pt_hook(int type, pt * args: SLOT VA COUNT PFN */ BUG_ON(type != KM_PTE0 && type != KM_PTE1); - vmi_ops.set_linear_mapping((type - KM_PTE0)+1, (u32)va, 1, pfn); -} + vmi_ops.set_linear_mapping((type - KM_PTE0)+1, va, 1, page_to_pfn(page)); + + return va; +} +#endif static void vmi_allocate_pt(u32 pfn) { @@ -656,7 +663,7 @@ void vmi_bringup(void) { /* We...

..._range(pgd_t *dst, pgd_t *src, int count); * @@ -397,11 +414,26 @@ extern pte_t *lookup_address(unsigned lo extern void noexec_setup(const char *str); +#include <asm/pgalloc.h> #if defined(CONFIG_HIGHPTE) -#define pte_offset_map(dir, address) \ - ((pte_t *)kmap_atomic(pmd_page(*(dir)),KM_PTE0) + pte_index(address)) -#define pte_offset_map_nested(dir, address) \ - ((pte_t *)kmap_atomic(pmd_page(*(dir)),KM_PTE1) + pte_index(address)) +#define pte_offset_map(dir, address) \ +({ \ + pte_t *__ptep; \ + unsigned pfn = pmd_val(*dir) >> PAGE_SHIFT; \ + __ptep = (pte_t...

..._range(pgd_t *dst, pgd_t *src, int count); * @@ -397,11 +414,26 @@ extern pte_t *lookup_address(unsigned lo extern void noexec_setup(const char *str); +#include <asm/pgalloc.h> #if defined(CONFIG_HIGHPTE) -#define pte_offset_map(dir, address) \ - ((pte_t *)kmap_atomic(pmd_page(*(dir)),KM_PTE0) + pte_index(address)) -#define pte_offset_map_nested(dir, address) \ - ((pte_t *)kmap_atomic(pmd_page(*(dir)),KM_PTE1) + pte_index(address)) +#define pte_offset_map(dir, address) \ +({ \ + pte_t *__ptep; \ + unsigned pfn = pmd_val(*dir) >> PAGE_SHIFT; \ + __ptep = (pte_t...

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

Hi Andi, This is a set of updates for the firstfloor patch queue. Quick rundown: revert-mm-x86_64-mm-account-for-module-percpu-space-separately-from-kernel-percpu.patch separate-module-percpu-space.patch Update the module percpu accounting patch fix-ff-allow-percpu-variables-to-be-page-aligned.patch Make sure the percpu memory allocation is page-aligned

Hi Andi, This is a set of updates for the firstfloor patch queue. Quick rundown: revert-mm-x86_64-mm-account-for-module-percpu-space-separately-from-kernel-percpu.patch separate-module-percpu-space.patch Update the module percpu accounting patch fix-ff-allow-percpu-variables-to-be-page-aligned.patch Make sure the percpu memory allocation is page-aligned

[ REPOST: Apologies to anyone who has seen this before. It didn't make it onto any of the lists it should have. -J ] Hi Andrew, This series of patches lays the basic ground work for the paravirtualized kernel patches coming later on. I think this lot is ready for the rough-and-tumble world of the -mm tree. For the most part, these patches do nothing or very little. The patches should

[ REPOST: Apologies to anyone who has seen this before. It didn't make it onto any of the lists it should have. -J ] Hi Andrew, This series of patches lays the basic ground work for the paravirtualized kernel patches coming later on. I think this lot is ready for the rough-and-tumble world of the -mm tree. For the most part, these patches do nothing or very little. The patches should

Hi Andi, This patch series implements the Linux Xen guest as a paravirt_ops backend. The features in implemented this patch series are: * domU only * UP and SMP guest support (NEW!) * dynamic ticks (NEW!) * writable pagetables, with late pinning/early unpinning (no shadow pagetable support) * supports both PAE and non-PAE modes (non-PAE may be broken at the moment) * xen hvc console

Hi Andi, This patch series implements the Linux Xen guest as a paravirt_ops backend. The features in implemented this patch series are: * domU only * UP and SMP guest support (NEW!) * dynamic ticks (NEW!) * writable pagetables, with late pinning/early unpinning (no shadow pagetable support) * supports both PAE and non-PAE modes (non-PAE may be broken at the moment) * xen hvc console

Hi Andi, This patch series implements the Linux Xen guest as a paravirt_ops backend. The features in implemented this patch series are: * domU only * UP and SMP guest support (NEW!) * dynamic ticks (NEW!) * writable pagetables, with late pinning/early unpinning (no shadow pagetable support) * supports both PAE and non-PAE modes (non-PAE may be broken at the moment) * xen hvc console

I''m sure everyone has seen the drop of VMI patches for Linux at this point, but just in case, the link is included below. I''ve read this version of the VMI spec and have made my way through most of the patches. While I wasn''t really that impressed with the first spec wrt Xen, the second version seems to be much more palatable. Specifically, the code inlining and