search for: page_t

...ve undesirable results. Signed-off-by: Rusty Russell <rusty at rustcorp.com.au> --- arch/x86/include/asm/lguest_hcall.h | 1 + arch/x86/lguest/boot.c | 8 ++++++++ drivers/lguest/hypercalls.c | 3 +++ drivers/lguest/lg.h | 1 + drivers/lguest/page_tables.c | 16 ++++++++++++++++ 5 files changed, 29 insertions(+) diff --git a/drivers/lguest/hypercalls.c b/drivers/lguest/hypercalls.c index 54d66f0..a160894 100644 --- a/drivers/lguest/hypercalls.c +++ b/drivers/lguest/hypercalls.c @@ -92,6 +92,9 @@ static void do_hcall(struct lg_cpu *cp...

...ve undesirable results. Signed-off-by: Rusty Russell <rusty at rustcorp.com.au> --- arch/x86/include/asm/lguest_hcall.h | 1 + arch/x86/lguest/boot.c | 8 ++++++++ drivers/lguest/hypercalls.c | 3 +++ drivers/lguest/lg.h | 1 + drivers/lguest/page_tables.c | 16 ++++++++++++++++ 5 files changed, 29 insertions(+) diff --git a/drivers/lguest/hypercalls.c b/drivers/lguest/hypercalls.c index 54d66f0..a160894 100644 --- a/drivers/lguest/hypercalls.c +++ b/drivers/lguest/hypercalls.c @@ -92,6 +92,9 @@ static void do_hcall(struct lg_cpu *cp...

This series takes one more step towards cpu-ification of lguest. As for rusty's last suggestion, I get rid of the whole bunch of "struct lguest *lg = cpu->lg" statements around by using lg_cpu as our base structure wherever it matters. (this saves us 11 lines)

We still assume the Guest and Host have the same PAGE_OFFSET settings, but now we don't assume 0xC0000000. Signed-off-by: Rusty Russell <rusty at rustcorp.com.au> Cc: Matias Zabaljauregui <zabaljauregui at gmail.com> --- drivers/lguest/page_tables.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/lguest/page_tables.c b/drivers/lguest/page_tables.c --- a/drivers/lguest/page_tables.c +++ b/drivers/lguest/page_tables.c @@ -996,11 +996,9 @@ static unsigned long setup_pagetables(st if (copy_to_user(&amp...

...ote: > > We still assume the Guest and Host have the same PAGE_OFFSET settings, > but now we don't assume 0xC0000000. > > Signed-off-by: Rusty Russell <rusty at rustcorp.com.au> > Cc: Matias Zabaljauregui <zabaljauregui at gmail.com> > --- > drivers/lguest/page_tables.c | 6 ++---- > 1 file changed, 2 insertions(+), 4 deletions(-) > > diff --git a/drivers/lguest/page_tables.c b/drivers/lguest/page_tables.c > --- a/drivers/lguest/page_tables.c > +++ b/drivers/lguest/page_tables.c > @@ -996,11 +996,9 @@ static unsigned long setup_pagetab...

This series takes one more step towards cpu-ification of lguest. As for rusty's last suggestion, I get rid of the whole bunch of "struct lguest *lg = cpu->lg" statements around by using lg_cpu as our base structure wherever it matters. (this saves us 11 lines)

We still assume the Guest and Host have the same PAGE_OFFSET settings, but now we don't assume 0xC0000000. Signed-off-by: Rusty Russell <rusty at rustcorp.com.au> Cc: Matias Zabaljauregui <zabaljauregui at gmail.com> --- drivers/lguest/page_tables.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/lguest/page_tables.c b/drivers/lguest/page_tables.c --- a/drivers/lguest/page_tables.c +++ b/drivers/lguest/page_tables.c @@ -996,11 +996,9 @@ static unsigned long setup_pagetables(st if (copy_to_user(&amp...

...ote: > > We still assume the Guest and Host have the same PAGE_OFFSET settings, > but now we don't assume 0xC0000000. > > Signed-off-by: Rusty Russell <rusty at rustcorp.com.au> > Cc: Matias Zabaljauregui <zabaljauregui at gmail.com> > --- > drivers/lguest/page_tables.c | 6 ++---- > 1 file changed, 2 insertions(+), 4 deletions(-) > > diff --git a/drivers/lguest/page_tables.c b/drivers/lguest/page_tables.c > --- a/drivers/lguest/page_tables.c > +++ b/drivers/lguest/page_tables.c > @@ -996,11 +996,9 @@ static unsigned long setup_pagetab...

...ex: linux-2.6.13/arch/i386/mm/init.c =================================================================== --- linux-2.6.13.orig/arch/i386/mm/init.c 2005-08-24 09:31:05.000000000 -0700 +++ linux-2.6.13/arch/i386/mm/init.c 2005-08-24 09:31:31.000000000 -0700 @@ -79,6 +79,7 @@ static pte_t * __init one_page_table_ini { if (pmd_none(*pmd)) { pte_t *page_table = (pte_t *) alloc_bootmem_low_pages(PAGE_SIZE); + SetPagePTE(virt_to_page(page_table)); set_pmd(pmd, __pmd(__pa(page_table) | _PAGE_TABLE)); if (page_table != pte_offset_kernel(pmd, 0)) BUG(); Index: linux-2.6.13/arch/i386/mm/pagea...

...ex: linux-2.6.13/arch/i386/mm/init.c =================================================================== --- linux-2.6.13.orig/arch/i386/mm/init.c 2005-08-24 09:31:05.000000000 -0700 +++ linux-2.6.13/arch/i386/mm/init.c 2005-08-24 09:31:31.000000000 -0700 @@ -79,6 +79,7 @@ static pte_t * __init one_page_table_ini { if (pmd_none(*pmd)) { pte_t *page_table = (pte_t *) alloc_bootmem_low_pages(PAGE_SIZE); + SetPagePTE(virt_to_page(page_table)); set_pmd(pmd, __pmd(__pa(page_table) | _PAGE_TABLE)); if (page_table != pte_offset_kernel(pmd, 0)) BUG(); Index: linux-2.6.13/arch/i386/mm/pagea...

...r most people. (Includes compile fix by Kamalesh Babulal <kamalesh at linux.vnet.ibm.com>) Signed-off-by: Rusty Russell <rusty at rustcorp.com.au> Cc: Matias Zabaljauregui <zabaljauregui at gmail.com> Cc: Kamalesh Babulal <kamalesh at linux.vnet.ibm.com> --- drivers/lguest/page_tables.c | 39 +++++++++++++++++---------------------- 1 file changed, 17 insertions(+), 22 deletions(-) diff --git a/drivers/lguest/page_tables.c b/drivers/lguest/page_tables.c --- a/drivers/lguest/page_tables.c +++ b/drivers/lguest/page_tables.c @@ -380,7 +380,7 @@ bool demand_page(struct lg_cpu...

...r most people. (Includes compile fix by Kamalesh Babulal <kamalesh at linux.vnet.ibm.com>) Signed-off-by: Rusty Russell <rusty at rustcorp.com.au> Cc: Matias Zabaljauregui <zabaljauregui at gmail.com> Cc: Kamalesh Babulal <kamalesh at linux.vnet.ibm.com> --- drivers/lguest/page_tables.c | 39 +++++++++++++++++---------------------- 1 file changed, 17 insertions(+), 22 deletions(-) diff --git a/drivers/lguest/page_tables.c b/drivers/lguest/page_tables.c --- a/drivers/lguest/page_tables.c +++ b/drivers/lguest/page_tables.c @@ -380,7 +380,7 @@ bool demand_page(struct lg_cpu...

...st unrequited). The patch is split in 5 parts to correspond with the 9 parts Andrew sent out before, but here's the summary: 1) Sparse (thanks Christoph Hellwig): - lguest_const can be static now - lguest.c should include "lguest_bus.h" for lguest_devices declaration. - page_tables.c unnecessary initialization - But the cost was high: lots of __force casts 8( 2) Jeff Garzik - Use netdev_priv instead of dev->priv. - Check for ioremap failure - iounmap on failure. - Wrap SEND_DMA and BIND_DMA calls - Don't set NETIF_F_SG unless we set NETIF_F...

...st unrequited). The patch is split in 5 parts to correspond with the 9 parts Andrew sent out before, but here's the summary: 1) Sparse (thanks Christoph Hellwig): - lguest_const can be static now - lguest.c should include "lguest_bus.h" for lguest_devices declaration. - page_tables.c unnecessary initialization - But the cost was high: lots of __force casts 8( 2) Jeff Garzik - Use netdev_priv instead of dev->priv. - Check for ioremap failure - iounmap on failure. - Wrap SEND_DMA and BIND_DMA calls - Don't set NETIF_F_SG unless we set NETIF_F...

...4.000000000 +0200 @@ -1558,6 +1558,7 @@ static int do_wp_page(struct mm_struct * flush_cache_page(vma, address, pte_pfn(orig_pte)); entry = pte_mkyoung(orig_pte); entry = maybe_mkwrite(pte_mkdirty(entry), vma); + page_check_writable(old_page, entry); ptep_set_access_flags(vma, address, page_table, entry, 1); update_mmu_cache(vma, address, entry); lazy_mmu_prot_update(entry); @@ -1607,6 +1608,7 @@ gotten: flush_cache_page(vma, address, pte_pfn(orig_pte)); entry = mk_pte(new_page, vma->vm_page_prot); entry = maybe_mkwrite(pte_mkdirty(entry), vma); + page_check_writable(...

...4.000000000 +0200 @@ -1558,6 +1558,7 @@ static int do_wp_page(struct mm_struct * flush_cache_page(vma, address, pte_pfn(orig_pte)); entry = pte_mkyoung(orig_pte); entry = maybe_mkwrite(pte_mkdirty(entry), vma); + page_check_writable(old_page, entry); ptep_set_access_flags(vma, address, page_table, entry, 1); update_mmu_cache(vma, address, entry); lazy_mmu_prot_update(entry); @@ -1607,6 +1608,7 @@ gotten: flush_cache_page(vma, address, pte_pfn(orig_pte)); entry = mk_pte(new_page, vma->vm_page_prot); entry = maybe_mkwrite(pte_mkdirty(entry), vma); + page_check_writable(...

> >% gdiff ../kqemu-osol-1.3.0pre9/kqemu-solaris.c . > >54c54 > >< static uint_t kqemu_busy = 0; > >--- > > > > > >>static uint32_t kqemu_busy = 0; > >> > >> > >73c73 > >< static uint_t upages_locked = 0; > >--- > > > > > >>static uint32_t upages_locked = 0; > >> >

..., so we'd think we'd handled the fault and return to the guest, causing the guest userspace program to loop instead of segfaulting. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> --- drivers/lguest/core.c | 2 +- drivers/lguest/lg.h | 2 +- drivers/lguest/page_tables.c | 12 ++++++++---- 3 files changed, 10 insertions(+), 6 deletions(-) =================================================================== --- a/drivers/lguest/core.c +++ b/drivers/lguest/core.c @@ -346,7 +346,7 @@ int run_guest(struct lguest *lg, char *_ } break; case 14: /* We&...

..., so we'd think we'd handled the fault and return to the guest, causing the guest userspace program to loop instead of segfaulting. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> --- drivers/lguest/core.c | 2 +- drivers/lguest/lg.h | 2 +- drivers/lguest/page_tables.c | 12 ++++++++---- 3 files changed, 10 insertions(+), 6 deletions(-) =================================================================== --- a/drivers/lguest/core.c +++ b/drivers/lguest/core.c @@ -346,7 +346,7 @@ int run_guest(struct lguest *lg, char *_ } break; case 14: /* We&...

...ONFIG_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_table) >> PAGE_SHIFT); set_pmd(pmd, __pmd(__pa(page_table) | _PAGE_TABLE)); if (page_table != pte_offset_kernel(pmd, 0)) BUG(); @@ -347,6 +349,8 @@...