search for: set_pgd

...============= --- linux-2.6.13.orig/arch/i386/mm/pgtable.c 2005-08-31 14:48:17.000000000 -0700 +++ linux-2.6.13/arch/i386/mm/pgtable.c 2005-08-31 14:48:53.000000000 -0700 @@ -247,14 +247,14 @@ pgd_t *pgd_alloc(struct mm_struct *mm) if (!pmd) goto out_oom; SetPagePDE(virt_to_page(pmd)); - set_pgd(&pgd[i], __pgd(1 + __pa(pmd))); + set_pgd(&pgd[i], __pgd(_PAGE_PRESENT | __pa(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...

...============= --- linux-2.6.13.orig/arch/i386/mm/pgtable.c 2005-08-31 14:48:17.000000000 -0700 +++ linux-2.6.13/arch/i386/mm/pgtable.c 2005-08-31 14:48:53.000000000 -0700 @@ -247,14 +247,14 @@ pgd_t *pgd_alloc(struct mm_struct *mm) if (!pmd) goto out_oom; SetPagePDE(virt_to_page(pmd)); - set_pgd(&pgd[i], __pgd(1 + __pa(pmd))); + set_pgd(&pgd[i], __pgd(_PAGE_PRESENT | __pa(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...

This series contain fixes to make the paravirt_ops code compile and boot on x86_64. This is a follow-up for the previous series from Glauber.

This series contain fixes to make the paravirt_ops code compile and boot on x86_64. This is a follow-up for the previous series from Glauber.

...========================================= --- a/arch/i386/mm/init.c +++ b/arch/i386/mm/init.c @@ -62,6 +62,7 @@ static pmd_t * __init one_md_table_init( #ifdef CONFIG_X86_PAE pmd_table = (pmd_t *) alloc_bootmem_low_pages(PAGE_SIZE); + paravirt_alloc_pd(__pa(pmd_table) >> PAGE_SHIFT); set_pgd(pgd, __pgd(__pa(pmd_table) | _PAGE_PRESENT)); pud = pud_offset(pgd, 0); if (pmd_table != pmd_offset(pud, 0)) @@ -82,6 +83,7 @@ static pte_t * __init one_page_table_ini { if (pmd_none(*pmd)) { pte_t *page_table = (pte_t *) alloc_bootmem_low_pages(PAGE_SIZE); + paravirt_alloc_pt(__pa(page...

...========================================= --- a/arch/i386/mm/init.c +++ b/arch/i386/mm/init.c @@ -62,6 +62,7 @@ static pmd_t * __init one_md_table_init( #ifdef CONFIG_X86_PAE pmd_table = (pmd_t *) alloc_bootmem_low_pages(PAGE_SIZE); + paravirt_alloc_pd(__pa(pmd_table) >> PAGE_SHIFT); set_pgd(pgd, __pgd(__pa(pmd_table) | _PAGE_PRESENT)); pud = pud_offset(pgd, 0); if (pmd_table != pmd_offset(pud, 0)) @@ -82,6 +83,7 @@ static pte_t * __init one_page_table_ini { if (pmd_none(*pmd)) { pte_t *page_table = (pte_t *) alloc_bootmem_low_pages(PAGE_SIZE); + paravirt_alloc_pt(__pa(page...

...ive boot, we'll be running on a + * pagetable rooted in swapper_pg_dir, but not in PAE + * mode, so this will end up clobbering the mappings + * for the lower 24Mbytes of the address space, + * without affecting the kernel address space. + */ + for (i = 0; i < USER_PTRS_PER_PGD; i++) + set_pgd(&base[i], + __pgd(__pa(empty_zero_page) | _PAGE_PRESENT)); + memset(&base[USER_PTRS_PER_PGD], 0, sizeof(pgd_t)); +} + +void native_pagetable_setup_done(pgd_t *base) +{ + /* + * Add low memory identity-mappings - SMP needs it when + * starting up on an AP from real-mode. In the non-PAE +...

...ive boot, we'll be running on a + * pagetable rooted in swapper_pg_dir, but not in PAE + * mode, so this will end up clobbering the mappings + * for the lower 24Mbytes of the address space, + * without affecting the kernel address space. + */ + for (i = 0; i < USER_PTRS_PER_PGD; i++) + set_pgd(&base[i], + __pgd(__pa(empty_zero_page) | _PAGE_PRESENT)); + memset(&base[USER_PTRS_PER_PGD], 0, sizeof(pgd_t)); +} + +void native_pagetable_setup_done(pgd_t *base) +{ + /* + * Add low memory identity-mappings - SMP needs it when + * starting up on an AP from real-mode. In the non-PAE +...

...========================================= --- a/arch/i386/mm/init.c +++ b/arch/i386/mm/init.c @@ -62,6 +62,7 @@ static pmd_t * __init one_md_table_init( #ifdef CONFIG_X86_PAE pmd_table = (pmd_t *) alloc_bootmem_low_pages(PAGE_SIZE); + paravirt_alloc_pd(__pa(pmd_table) >> PAGE_SHIFT); set_pgd(pgd, __pgd(__pa(pmd_table) | _PAGE_PRESENT)); pud = pud_offset(pgd, 0); if (pmd_table != pmd_offset(pud, 0)) @@ -82,6 +83,7 @@ static pte_t * __init one_page_table_ini { if (pmd_none(*pmd)) { pte_t *page_table = (pte_t *) alloc_bootmem_low_pages(PAGE_SIZE); + paravirt_alloc_pt(__pa(page...

...========================================= --- a/arch/i386/mm/init.c +++ b/arch/i386/mm/init.c @@ -62,6 +62,7 @@ static pmd_t * __init one_md_table_init( #ifdef CONFIG_X86_PAE pmd_table = (pmd_t *) alloc_bootmem_low_pages(PAGE_SIZE); + paravirt_alloc_pd(__pa(pmd_table) >> PAGE_SHIFT); set_pgd(pgd, __pgd(__pa(pmd_table) | _PAGE_PRESENT)); pud = pud_offset(pgd, 0); if (pmd_table != pmd_offset(pud, 0)) @@ -82,6 +83,7 @@ static pte_t * __init one_page_table_ini { if (pmd_none(*pmd)) { pte_t *page_table = (pte_t *) alloc_bootmem_low_pages(PAGE_SIZE); + paravirt_alloc_pt(__pa(page...

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

...#define pgd_none(x) (!pgd_val(x)) -#define pud_none(x) (!pud_val(x)) +#ifdef CONFIG_PARAVIRT +#include <asm/paravirt.h> +#else +#define set_pte native_set_pte +#define set_pte_at(mm,addr,ptep,pteval) set_pte(ptep,pteval) +#define set_pmd native_set_pmd +#define set_pud native_set_pud +#define set_pgd native_set_pgd +#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 pud_clear native_pud_clear +#define pgd_clear native_pgd_clear +#define ptep_get_and_clear(mm,addr,xp) __pte(xchg(&(xp)->...

...#define pgd_none(x) (!pgd_val(x)) -#define pud_none(x) (!pud_val(x)) +#ifdef CONFIG_PARAVIRT +#include <asm/paravirt.h> +#else +#define set_pte native_set_pte +#define set_pte_at(mm,addr,ptep,pteval) set_pte(ptep,pteval) +#define set_pmd native_set_pmd +#define set_pud native_set_pud +#define set_pgd native_set_pgd +#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 pud_clear native_pud_clear +#define pgd_clear native_pgd_clear +#define ptep_get_and_clear(mm,addr,xp) __pte(xchg(&(xp)->...

.../lguest_hcall.h index 553810f..7ba1d81 100644 --- a/arch/x86/include/asm/lguest_hcall.h +++ b/arch/x86/include/asm/lguest_hcall.h @@ -12,6 +12,7 @@ #define LHCALL_TS 8 #define LHCALL_SET_CLOCKEVENT 9 #define LHCALL_HALT 10 +#define LHCALL_SET_PMD 13 #define LHCALL_SET_PTE 14 #define LHCALL_SET_PGD 15 #define LHCALL_LOAD_TLS 16 @@ -32,7 +33,7 @@ * operations? There are two ways: the direct way is to make a "hypercall", * to make requests of the Host Itself. * - * We use the KVM hypercall mechanism. Eighteen hypercalls are + * We use the KVM hypercall mechanism. Sixteen hyp...

.../lguest_hcall.h index 553810f..7ba1d81 100644 --- a/arch/x86/include/asm/lguest_hcall.h +++ b/arch/x86/include/asm/lguest_hcall.h @@ -12,6 +12,7 @@ #define LHCALL_TS 8 #define LHCALL_SET_CLOCKEVENT 9 #define LHCALL_HALT 10 +#define LHCALL_SET_PMD 13 #define LHCALL_SET_PTE 14 #define LHCALL_SET_PGD 15 #define LHCALL_LOAD_TLS 16 @@ -32,7 +33,7 @@ * operations? There are two ways: the direct way is to make a "hypercall", * to make requests of the Host Itself. * - * We use the KVM hypercall mechanism. Eighteen hypercalls are + * We use the KVM hypercall mechanism. Sixteen hyp...

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

A lot of cleanup after removal of 32-bit Xen PV guest support in paravirt code. Changes in V4: - dropped patches 1-3, as already committed - addressed comments to V3 - added new patches 5+6 Changes in V3: - addressed comments to V2 - split patch 1 into 2 patches - new patches 3 and 7 Changes in V2: - rebase to 5.8 kernel - addressed comments to V1 - new patches 3 and 4 Juergen Gross (6):

...; spin_lock_irqsave(&pgd_lock, flags); pgd_list_del(pgd); spin_unlock_irqrestore(&pgd_lock, flags); @@ -244,13 +246,16 @@ pgd_t *pgd_alloc(struct mm_struct *mm) pmd_t *pmd = kmem_cache_alloc(pmd_cache, GFP_KERNEL); if (!pmd) goto out_oom; + SetPagePDE(virt_to_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); ret...