search for: pte_mkwrite

...struct mm_struct *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/i...

...struct mm_struct *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/i...

...rate, 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 *migrate) migrate->src[i] &= ~MIGRATE_PFN_MIGRATE; continue; } - } else if (!is_devic...

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

...ok3s/64/pgtable.h: error: redefinition of 'pte_mkspecial': => 673:21 > + /kisskb/src/arch/powerpc/include/asm/book3s/64/pgtable.h: error: redefinition of 'pte_mkuser': => 693:21 > + /kisskb/src/arch/powerpc/include/asm/book3s/64/pgtable.h: error: redefinition of 'pte_mkwrite': => 655:21 > + /kisskb/src/arch/powerpc/include/asm/book3s/64/pgtable.h: error: redefinition of 'pte_mkyoung': => 668:21 > + /kisskb/src/arch/powerpc/include/asm/book3s/64/pgtable.h: error: redefinition of 'pte_modify': => 711:21 > + /kisskb/src/arch/pow...

...ok3s/64/pgtable.h: error: redefinition of 'pte_mkspecial': => 673:21 > + /kisskb/src/arch/powerpc/include/asm/book3s/64/pgtable.h: error: redefinition of 'pte_mkuser': => 693:21 > + /kisskb/src/arch/powerpc/include/asm/book3s/64/pgtable.h: error: redefinition of 'pte_mkwrite': => 655:21 > + /kisskb/src/arch/powerpc/include/asm/book3s/64/pgtable.h: error: redefinition of 'pte_mkyoung': => 668:21 > + /kisskb/src/arch/powerpc/include/asm/book3s/64/pgtable.h: error: redefinition of 'pte_modify': => 711:21 > + /kisskb/src/arch/pow...

...pgtable.h: error: redefinition of 'pte_mkspecial': => 673:21 >> + /kisskb/src/arch/powerpc/include/asm/book3s/64/pgtable.h: error: redefinition of 'pte_mkuser': => 693:21 >> + /kisskb/src/arch/powerpc/include/asm/book3s/64/pgtable.h: error: redefinition of 'pte_mkwrite': => 655:21 >> + /kisskb/src/arch/powerpc/include/asm/book3s/64/pgtable.h: error: redefinition of 'pte_mkyoung': => 668:21 >> + /kisskb/src/arch/powerpc/include/asm/book3s/64/pgtable.h: error: redefinition of 'pte_modify': => 711:21 >> + /kisskb/...

...error: redefinition of 'pte_mkspecial': => 673:21 > >> + /kisskb/src/arch/powerpc/include/asm/book3s/64/pgtable.h: error: redefinition of 'pte_mkuser': => 693:21 > >> + /kisskb/src/arch/powerpc/include/asm/book3s/64/pgtable.h: error: redefinition of 'pte_mkwrite': => 655:21 > >> + /kisskb/src/arch/powerpc/include/asm/book3s/64/pgtable.h: error: redefinition of 'pte_mkyoung': => 668:21 > >> + /kisskb/src/arch/powerpc/include/asm/book3s/64/pgtable.h: error: redefinition of 'pte_modify': => 711:21 > >&...

Here is an slightly updated version of the paravirt_ops patch. If your comments and criticism were welcome before, now it's even more! There are some issues that are _not_ addressed in this revision, and here are the causes: * split debugreg into multiple functions, suggested by Andi: - Me and jsfg agree that introducing more pvops (specially 14!) is not worthwhile. So, although we do

Here is an slightly updated version of the paravirt_ops patch. If your comments and criticism were welcome before, now it's even more! There are some issues that are _not_ addressed in this revision, and here are the causes: * split debugreg into multiple functions, suggested by Andi: - Me and jsfg agree that introducing more pvops (specially 14!) is not worthwhile. So, although we do

Hey folks, Here's a new spin of the pvops64 patch series. We didn't get that many comments from the last time, so it should be probably almost ready to get in. Heya! >From the last version, the most notable changes are: * consolidation of system.h, merging jeremy's comments about ordering concerns * consolidation of smp functions that goes through smp_ops. They're sharing

Hey folks, Here's a new spin of the pvops64 patch series. We didn't get that many comments from the last time, so it should be probably almost ready to get in. Heya! >From the last version, the most notable changes are: * consolidation of system.h, merging jeremy's comments about ordering concerns * consolidation of smp functions that goes through smp_ops. They're sharing

Hi all, 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), primarily because of the ptent = ptep_get_and_clear(mm, addr, pte); ptent = pte_modify(ptent, newprot); /* ... */ set_pte_at(mm, addr, pte,

Hi all, 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), primarily because of the ptent = ptep_get_and_clear(mm, addr, pte); ptent = pte_modify(ptent, newprot); /* ... */ set_pte_at(mm, addr, pte,

Hi all, 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), primarily because of the ptent = ptep_get_and_clear(mm, addr, pte); ptent = pte_modify(ptent, newprot); /* ... */ set_pte_at(mm, addr, pte,

This is hopefully the last iteration of the pvops64 patch. >From the last version, we have only one change, which is include/asm-x86_64/processor.h: There were still one survivor in raw asm. Also, git screwed me up for some reason, and the 25th patch was missing the new files, paravirt.{c,h}. (although I do remember having git-add'ed it, but who knows...) Andrew, could you please push it

This is hopefully the last iteration of the pvops64 patch. >From the last version, we have only one change, which is include/asm-x86_64/processor.h: There were still one survivor in raw asm. Also, git screwed me up for some reason, and the 25th patch was missing the new files, paravirt.{c,h}. (although I do remember having git-add'ed it, but who knows...) Andrew, could you please push it

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),