search for: __pte

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

...nsigned long native_pgd_val(pgd_t pgd) +{ + return pgd.pgd; +} + + +#ifdef CONFIG_PARAVIRT +#include <asm/paravirt.h> +#else + #define pte_val(x) ((x).pte) #define pmd_val(x) ((x).pmd) #define pud_val(x) ((x).pud) #define pgd_val(x) ((x).pgd) -#define pgprot_val(x) ((x).pgprot) #define __pte(x) ((pte_t) { (x) } ) #define __pmd(x) ((pmd_t) { (x) } ) #define __pud(x) ((pud_t) { (x) } ) #define __pgd(x) ((pgd_t) { (x) } ) +#endif /* CONFIG_PARAVIRT */ + +#define pgprot_val(x) ((x).pgprot) #define __pgprot(x) ((pgprot_t) { (x) } ) #define __PHYSICAL_START ((unsigned long)CONFIG_PHYS...

...nsigned long native_pgd_val(pgd_t pgd) +{ + return pgd.pgd; +} + + +#ifdef CONFIG_PARAVIRT +#include <asm/paravirt.h> +#else + #define pte_val(x) ((x).pte) #define pmd_val(x) ((x).pmd) #define pud_val(x) ((x).pud) #define pgd_val(x) ((x).pgd) -#define pgprot_val(x) ((x).pgprot) #define __pte(x) ((pte_t) { (x) } ) #define __pmd(x) ((pmd_t) { (x) } ) #define __pud(x) ((pud_t) { (x) } ) #define __pgd(x) ((pgd_t) { (x) } ) +#endif /* CONFIG_PARAVIRT */ + +#define pgprot_val(x) ((x).pgprot) #define __pgprot(x) ((pgprot_t) { (x) } ) #define __PHYSICAL_START ((unsigned long)CONFIG_PHYS...

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

On 8/7/20 4:38 AM, Juergen Gross wrote: > @@ -377,10 +373,7 @@ static inline pte_t __pte(pteval_t val) > { > pteval_t ret; > > - if (sizeof(pteval_t) > sizeof(long)) > - ret = PVOP_CALLEE2(pteval_t, mmu.make_pte, val, (u64)val >> 32); > - else > - ret = PVOP_CALLEE1(pteval_t, mmu.make_pte, val); > + ret = PVOP_CALLEE1(pteval_t, mmu.make_pte, val)...

On 8/7/20 4:38 AM, Juergen Gross wrote: > @@ -377,10 +373,7 @@ static inline pte_t __pte(pteval_t val) > { > pteval_t ret; > > - if (sizeof(pteval_t) > sizeof(long)) > - ret = PVOP_CALLEE2(pteval_t, mmu.make_pte, val, (u64)val >> 32); > - else > - ret = PVOP_CALLEE1(pteval_t, mmu.make_pte, val); > + ret = PVOP_CALLEE1(pteval_t, mmu.make_pte, val)...

diff -r f1dd818c2f06 include/asm-i386/pgtable-2level.h --- a/include/asm-i386/pgtable-2level.h Thu Oct 19 03:03:09 2006 -0700 +++ b/include/asm-i386/pgtable-2level.h Thu Oct 19 03:03:18 2006 -0700 @@ -22,8 +22,7 @@ #define pte_clear(mm,addr,xp) do { set_pte_at(mm, addr, xp, __pte(0)); } while (0) #define pmd_clear(xp) do { set_pmd(xp, __pmd(0)); } while (0) -#define __HAVE_ARCH_PTEP_GET_AND_CLEAR -#define ptep_get_and_clear(mm,addr,xp) __pte(xchg(&(xp)->pte_low, 0)) +#define raw_ptep_get_and_clear(xp) __pte(xchg(&(xp)->pte_low, 0)) #define pte_page(x) p...

diff -r f1dd818c2f06 include/asm-i386/pgtable-2level.h --- a/include/asm-i386/pgtable-2level.h Thu Oct 19 03:03:09 2006 -0700 +++ b/include/asm-i386/pgtable-2level.h Thu Oct 19 03:03:18 2006 -0700 @@ -22,8 +22,7 @@ #define pte_clear(mm,addr,xp) do { set_pte_at(mm, addr, xp, __pte(0)); } while (0) #define pmd_clear(xp) do { set_pmd(xp, __pmd(0)); } while (0) -#define __HAVE_ARCH_PTEP_GET_AND_CLEAR -#define ptep_get_and_clear(mm,addr,xp) __pte(xchg(&(xp)->pte_low, 0)) +#define raw_ptep_get_and_clear(xp) __pte(xchg(&(xp)->pte_low, 0)) #define pte_page(x) p...

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

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

...table_offset(addr)]; + if (!(page & _PAGE_PRESENT)) + return 0; + /* Only support CoW for the zero page. */ + if (PHYS_PFN(page) != mfn_zero) + return 0; + + new_page = alloc_pages(0); + memset((void*) new_page, 0, PAGE_SIZE); + + rc = HYPERVISOR_update_va_mapping(addr & PAGE_MASK, __pte(virt_to_mach(new_page) | L1_PROT), UVMF_INVLPG); + if (!rc) + return 1; + + printk("Map zero page to %lx failed: %d.\n", addr, rc); + return 0; +} + #define read_cr2() \ (HYPERVISOR_shared_info->vcpu_info[smp_processor_id()].arch.cr2) @@ -126,6 +166,10 @@ void do_page_faul...

...md(pmd, __pmd(_PAGE_TABLE + \ ((unsigned long long)page_to_pfn(pte) << \ - (unsigned long long) PAGE_SHIFT))) + (unsigned long long) PAGE_SHIFT))); \ +} while (0) + /* * Allocate and free page tables. */ @@ -33,7 +41,11 @@ static inline void pte_free(struct page } -#define __pte_free_tlb(tlb,pte) tlb_remove_page((tlb),(pte)) +#define __pte_free_tlb(tlb,pte) \ +do { \ + tlb_remove_page((tlb),(pte)); \ + mach_release_pte(page_to_pfn(pte)); \ +} while (0) #ifdef CONFIG_X86_PAE /* Index: linux-2.6.16-rc5/include/asm-i386/pgtable-2level.h ===========================...

...md(pmd, __pmd(_PAGE_TABLE + \ ((unsigned long long)page_to_pfn(pte) << \ - (unsigned long long) PAGE_SHIFT))) + (unsigned long long) PAGE_SHIFT))); \ +} while (0) + /* * Allocate and free page tables. */ @@ -33,7 +41,11 @@ static inline void pte_free(struct page } -#define __pte_free_tlb(tlb,pte) tlb_remove_page((tlb),(pte)) +#define __pte_free_tlb(tlb,pte) \ +do { \ + tlb_remove_page((tlb),(pte)); \ + mach_release_pte(page_to_pfn(pte)); \ +} while (0) #ifdef CONFIG_X86_PAE /* Index: linux-2.6.16-rc5/include/asm-i386/pgtable-2level.h ===========================...

Hi, 2.6.29-rc3 x86_64 guest on x86_64 RHEL5.3 host: https://bugzilla.redhat.com/484295 kernel BUG at mm/filemap.c:123! invalid opcode: 0000 [#1] SMP DEBUG_PAGEALLOC last sysfs file: /sys/devices/vbd-51712/block/xvda/xvda2/dev CPU 0 Modules linked in: ipv6 xts lrw gf128mul sha256_generic cbc dm_crypt

On 8/10/20 12:39 AM, J?rgen Gro? wrote: > On 09.08.20 04:34, Boris Ostrovsky wrote: >> On 8/7/20 4:38 AM, Juergen Gross wrote: >>> @@ -377,10 +373,7 @@ static inline pte_t __pte(pteval_t val) >>> ? { >>> ????? pteval_t ret; >>> ? -??? if (sizeof(pteval_t) > sizeof(long)) >>> -??????? ret = PVOP_CALLEE2(pteval_t, mmu.make_pte, val, (u64)val >> >>> 32); >>> -??? else >>> -??????? ret = PVOP_CALLEE1(pteva...

...include/asm-i386/pgtable-2level.h --- a/include/asm-i386/pgtable-2level.h Wed Apr 11 17:13:10 2007 -0700 +++ b/include/asm-i386/pgtable-2level.h Wed Apr 11 18:22:51 2007 -0700 @@ -35,6 +35,11 @@ static inline void native_set_pmd(pmd_t #define pte_clear(mm,addr,xp) do { set_pte_at(mm, addr, xp, __pte(0)); } while (0) #define pmd_clear(xp) do { set_pmd(xp, __pmd(0)); } while (0) + +static inline void native_pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *xp) +{ + *xp = __pte(0); +} static inline pte_t native_ptep_get_and_clear(pte_t *xp) { diff -r 1478ce4ec9e3 include/asm-i386/pg...