search for: mk_pte

...ruct *mm = vma->vm_mm; pte_t * pte; + pte_t pte_val; spinlock_t *ptl; if (unlikely(anon_vma_prepare(vma))) @@ -322,8 +323,9 @@ void install_arg_page(struct vm_area_str } inc_mm_counter(mm, anon_rss); lru_cache_add_active(page); - set_pte_at(mm, address, pte, pte_mkdirty(pte_mkwrite(mk_pte( - page, vma->vm_page_prot)))); + pte_val = pte_mkdirty(pte_mkwrite(mk_pte(page, vma->vm_page_prot))); + page_check_writable(page, pte_val); + set_pte_at(mm, address, pte, pte_val); page_add_new_anon_rmap(page, vma, address); pte_unmap_unlock(pte, ptl); diff -urpN linux-2.6/include/...

...ruct *mm = vma->vm_mm; pte_t * pte; + pte_t pte_val; spinlock_t *ptl; if (unlikely(anon_vma_prepare(vma))) @@ -322,8 +323,9 @@ void install_arg_page(struct vm_area_str } inc_mm_counter(mm, anon_rss); lru_cache_add_active(page); - set_pte_at(mm, address, pte, pte_mkdirty(pte_mkwrite(mk_pte( - page, vma->vm_page_prot)))); + pte_val = pte_mkdirty(pte_mkwrite(mk_pte(page, vma->vm_page_prot))); + page_check_writable(page, pte_val); + set_pte_at(mm, address, pte, pte_val); page_add_new_anon_rmap(page, vma, address); pte_unmap_unlock(pte, ptl); diff -urpN linux-2.6/include/...

...PAGE_KERNEL); + set_pte(&switcher_pte_page[pte_index((unsigned long)pages)], regs_pte); } /*:*/ @@ -1209,7 +1204,7 @@ static __init void populate_switcher_pte /* The first entries are easy: they map the Switcher code. */ for (i = 0; i < pages; i++) { - native_set_pte(&pte[i], mk_pte(switcher_page[i], + set_pte(&pte[i], mk_pte(switcher_page[i], __pgprot(_PAGE_PRESENT|_PAGE_ACCESSED))); } @@ -1217,14 +1212,14 @@ static __init void populate_switcher_pte i = pages + cpu*2; /* First page (Guest registers) is writable from the Guest */ - native_set_pte(&pte[i...

...PAGE_KERNEL); + set_pte(&switcher_pte_page[pte_index((unsigned long)pages)], regs_pte); } /*:*/ @@ -1209,7 +1204,7 @@ static __init void populate_switcher_pte /* The first entries are easy: they map the Switcher code. */ for (i = 0; i < pages; i++) { - native_set_pte(&pte[i], mk_pte(switcher_page[i], + set_pte(&pte[i], mk_pte(switcher_page[i], __pgprot(_PAGE_PRESENT|_PAGE_ACCESSED))); } @@ -1217,14 +1212,14 @@ static __init void populate_switcher_pte i = pages + cpu*2; /* First page (Guest registers) is writable from the Guest */ - native_set_pte(&pte[i...

...r file back page */ @@ -2665,11 +2650,6 @@ static void migrate_vma_insert_page(struct migrate_vma *migrate, swp_entry = make_device_private_entry(page, vma->vm_flags & VM_WRITE); entry = swp_entry_to_pte(swp_entry); - } else if (is_device_public_page(page)) { - entry = pte_mkold(mk_pte(page, READ_ONCE(vma->vm_page_prot))); - if (vma->vm_flags & VM_WRITE) - entry = pte_mkwrite(pte_mkdirty(entry)); - entry = pte_mkdevmap(entry); } } else { entry = mk_pte(page, vma->vm_page_prot); @@ -2789,7 +2769,7 @@ static void migrate_vma_pages(struct migrate_vma *mig...

...highmem.c +++ b/arch/i386/mm/highmem.c @@ -44,22 +44,19 @@ void *kmap_atomic(struct page *page, enu idx = type + KM_TYPE_NR*smp_processor_id(); vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx); -#ifdef CONFIG_DEBUG_HIGHMEM if (!pte_none(*(kmap_pte-idx))) BUG(); -#endif set_pte(kmap_pte-idx, mk_pte(page, kmap_prot)); - __flush_tlb_one(vaddr); return (void*) vaddr; } void kunmap_atomic(void *kvaddr, enum km_type type) { -#ifdef CONFIG_DEBUG_HIGHMEM unsigned long vaddr = (unsigned long) kvaddr & PAGE_MASK; enum fixed_addresses idx = type + KM_TYPE_NR*smp_processor_id(); +#ifd...

...page *page, pgprot_t prot) -{ - unsigned long vaddr; - int idx, type; - - type = kmap_atomic_idx_push(); - idx = type + KM_TYPE_NR*smp_processor_id(); - vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx); -#ifdef CONFIG_DEBUG_HIGHMEM - BUG_ON(!pte_none(*(kmap_pte - idx))); -#endif - set_pte(kmap_pte-idx, mk_pte(page, prot)); - local_flush_tlb_one((unsigned long)vaddr); - - return (void*) vaddr; -} -EXPORT_SYMBOL(kmap_atomic_high_prot); - -void kunmap_atomic_high(void *kvaddr) -{ - unsigned long vaddr = (unsigned long) kvaddr & PAGE_MASK; - int type __maybe_unused; - - if (vaddr < FIXADDR_START) -...

...ap_unlock(pte - 1, ptl); return addr; @@ -1109,6 +1113,7 @@ static int zeromap_pte_range(struct mm_s pte = pte_alloc_map_lock(mm, pmd, addr, &ptl); if (!pte) return -ENOMEM; + arch_enter_lazy_mmu_mode(); do { struct page *page = ZERO_PAGE(addr); pte_t zero_pte = pte_wrprotect(mk_pte(page, prot)); @@ -1118,6 +1123,7 @@ static int zeromap_pte_range(struct mm_s BUG_ON(!pte_none(*pte)); set_pte_at(mm, addr, pte, zero_pte); } while (pte++, addr += PAGE_SIZE, addr != end); + arch_leave_lazy_mmu_mode(); pte_unmap_unlock(pte - 1, ptl); return 0; } @@ -1275,11 +1281,13 @@...

...nsigned long vaddr; - int idx, type; - - type = kmap_atomic_idx_push(); - idx = type + KM_TYPE_NR*smp_processor_id(); - vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx); - WARN_ON(IS_ENABLED(CONFIG_DEBUG_HIGHMEM) && !pte_none(*(kmap_pte - idx))); - __set_pte_at(&init_mm, vaddr, kmap_pte-idx, mk_pte(page, prot), 1); - local_flush_tlb_page(NULL, vaddr); - - return (void*) vaddr; -} -EXPORT_SYMBOL(kmap_atomic_high_prot); - -void kunmap_atomic_high(void *kvaddr) -{ - unsigned long vaddr = (unsigned long) kvaddr & PAGE_MASK; - - if (vaddr < __fix_to_virt(FIX_KMAP_END)) - return; - - if (IS...

...Make sure it was indeed properly unmapped. - */ - BUG_ON(!pte_none(get_fixmap_pte(vaddr))); -#endif - /* - * When debugging is off, kunmap_atomic leaves the previous mapping - * in place, so the contained TLB flush ensures the TLB is updated - * with the new mapping. - */ - set_fixmap_pte(idx, mk_pte(page, prot)); - - return (void *)vaddr; -} -EXPORT_SYMBOL(kmap_atomic_high_prot); - -void kunmap_atomic_high(void *kvaddr) -{ - unsigned long vaddr = (unsigned long) kvaddr & PAGE_MASK; - int idx, type; - - if (kvaddr >= (void *)FIXADDR_START) { - type = kmap_atomic_idx(); - idx = FIX_KMAP...

...ble; - -void *kmap_atomic_high_prot(struct page *page, pgprot_t prot) -{ - int idx, cpu_idx; - unsigned long vaddr; - - cpu_idx = kmap_atomic_idx_push(); - idx = cpu_idx + KM_TYPE_NR * smp_processor_id(); - vaddr = FIXMAP_ADDR(idx); - - set_pte_at(&init_mm, vaddr, fixmap_page_table + idx, - mk_pte(page, prot)); - - return (void *)vaddr; -} -EXPORT_SYMBOL(kmap_atomic_high_prot); - -void kunmap_atomic_high(void *kv) -{ - unsigned long kvaddr = (unsigned long)kv; - - if (kvaddr >= FIXMAP_BASE && kvaddr < (FIXMAP_BASE + FIXMAP_SIZE)) { - - /* - * Because preemption is disabled,...

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

Greetings, after Carsten pitched CMM2 on the kvm mini summit here is a repost of version 5 of the guest page hinting patches. The code is still the same but has been adapted to the latest git level. -- blue skies, Martin. "Reality continues to ruin my life." - Calvin.

Greetings, after Carsten pitched CMM2 on the kvm mini summit here is a repost of version 5 of the guest page hinting patches. The code is still the same but has been adapted to the latest git level. -- blue skies, Martin. "Reality continues to ruin my life." - Calvin.

After way to many months here is the fifth version of the guest page hinting patches. Compared to version four a few improvements have been added: - Avoid page_host_discards() calls outside of page-states.h - The discard list is now implemented via the page_free_discarded hook and architecture specific code. - PG_state_change page flag has been replaced with architecture specficic

After way to many months here is the fifth version of the guest page hinting patches. Compared to version four a few improvements have been added: - Avoid page_host_discards() calls outside of page-states.h - The discard list is now implemented via the page_free_discarded hook and architecture specific code. - PG_state_change page flag has been replaced with architecture specficic

Following up to the discussion in: https://lore.kernel.org/r/20200914204209.256266093 at linutronix.de and the second version of this: https://lore.kernel.org/r/20201029221806.189523375 at linutronix.de this series provides a preemptible variant of kmap_atomic & related interfaces. This is achieved by: - Removing the RT dependency from migrate_disable/enable() - Consolidating all

Following up to the discussion in: https://lore.kernel.org/r/20200914204209.256266093 at linutronix.de and the second version of this: https://lore.kernel.org/r/20201029221806.189523375 at linutronix.de this series provides a preemptible variant of kmap_atomic & related interfaces. This is achieved by: - Removing the RT dependency from migrate_disable/enable() - Consolidating all

Following up to the discussion in: https://lore.kernel.org/r/20200914204209.256266093 at linutronix.de and the second version of this: https://lore.kernel.org/r/20201029221806.189523375 at linutronix.de this series provides a preemptible variant of kmap_atomic & related interfaces. This is achieved by: - Removing the RT dependency from migrate_disable/enable() - Consolidating all

...dr); + hvvm_pud_unmap(pgd, addr); +} + +static int hvvm_pte_alloc(pmd_t *pmd, unsigned long addr, + unsigned long page, pgprot_t prot) +{ + pte_t *pte; + + pte = pte_alloc_kernel(pmd, addr); + if (!pte) + return -ENOMEM; + + WARN_ON(!pte_none(*pte)); + set_pte_at(&init_mm, addr, pte, + mk_pte(pfn_to_page(page >> PAGE_SHIFT), prot)); + + return 0; +} + +static inline int hvvm_pmd_alloc(pud_t *pud, unsigned long addr, + unsigned long page, pgprot_t prot) +{ + pmd_t *pmd; + + pmd = pmd_alloc(&init_mm, pud, addr); + if (!pmd) + return -ENOMEM; + if (hvvm_pte_alloc(pmd, addr,...