search for: virt_to_page

...g/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/pageattr.c =================================================================== --- linux-2.6.13.orig/arch/i386/mm/pageattr.c 2005-08-24...

...g/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/pageattr.c =================================================================== --- linux-2.6.13.orig/arch/i386/mm/pageattr.c 2005-08-24...

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

...Will Deacon <will.deacon at arm.com> --- mm/highmem.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/mm/highmem.c b/mm/highmem.c index d517cd1..2a07f97 100644 --- a/mm/highmem.c +++ b/mm/highmem.c @@ -105,6 +105,7 @@ struct page *kmap_to_page(void *vaddr) return virt_to_page(addr); } +EXPORT_SYMBOL(kmap_to_page); static void flush_all_zero_pkmaps(void) { -- 1.7.4.1

...Will Deacon <will.deacon at arm.com> --- mm/highmem.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/mm/highmem.c b/mm/highmem.c index d517cd1..2a07f97 100644 --- a/mm/highmem.c +++ b/mm/highmem.c @@ -105,6 +105,7 @@ struct page *kmap_to_page(void *vaddr) return virt_to_page(addr); } +EXPORT_SYMBOL(kmap_to_page); static void flush_all_zero_pkmaps(void) { -- 1.7.4.1

On 2020-09-15 16:51, Christoph Hellwig wrote: [...] > +These APIs allow to allocate pages in the kernel direct mapping that are > +guaranteed to be DMA addressable. This means that unlike dma_alloc_coherent, > +virt_to_page can be called on the resulting address, and the resulting Nit: if we explicitly describe this as if it's a guarantee that can be relied upon... > +struct page can be used for everything a struct page is suitable for. [...] > +This routine allocates a region of <size> bytes of co...

...changed, 1 insertions(+), 1 deletions(-) diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c index 42086ac..7436283 100644 --- a/arch/x86/xen/mmu.c +++ b/arch/x86/xen/mmu.c @@ -737,7 +737,7 @@ pgd_t *xen_get_user_pgd(pgd_t *pgd) if (offset < pgd_index(USER_LIMIT)) { struct page *page = virt_to_page(pgd_page); - user_ptr = (pgd_t *)page->private; + user_ptr = page->private; if (user_ptr) user_ptr += offset; } -- 1.7.2.1

...changed, 1 insertions(+), 1 deletions(-) diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c index 42086ac..7436283 100644 --- a/arch/x86/xen/mmu.c +++ b/arch/x86/xen/mmu.c @@ -737,7 +737,7 @@ pgd_t *xen_get_user_pgd(pgd_t *pgd) if (offset < pgd_index(USER_LIMIT)) { struct page *page = virt_to_page(pgd_page); - user_ptr = (pgd_t *)page->private; + user_ptr = page->private; if (user_ptr) user_ptr += offset; } -- 1.7.2.1

...changed, 1 insertions(+), 1 deletions(-) diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c index 42086ac..7436283 100644 --- a/arch/x86/xen/mmu.c +++ b/arch/x86/xen/mmu.c @@ -737,7 +737,7 @@ pgd_t *xen_get_user_pgd(pgd_t *pgd) if (offset < pgd_index(USER_LIMIT)) { struct page *page = virt_to_page(pgd_page); - user_ptr = (pgd_t *)page->private; + user_ptr = page->private; if (user_ptr) user_ptr += offset; } -- 1.7.2.1

...B_DMA_H + +int gnttab_dma_local_pfn(struct page *page); + +static inline maddr_t gnttab_dma_map_page(struct page *page) +{ + __gnttab_dma_map_page(page, &gnttab_dma_local_pfn); + return page_to_bus(page); +} + +static inline void gnttab_dma_unmap_page(maddr_t maddr) +{ + __gnttab_dma_unmap_page(virt_to_page(bus_to_virt(maddr))); +} + +#endif /* _ASM_I386_GNTTAB_DMA_H */ diff -r d5e0eb7dd069 -r 69e2dd4e06c4 include/asm-ia64/gnttab_dma.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/include/asm-ia64/gnttab_dma.h Mon Jun 11 16:13:06 2007 +0900 @@ -0,0 +1,46 @@ +/* + * Copyright (c) 2007 Herbert Xu &...

.../domain.c b/xen/arch/arm/domain.c index 5702399..4b38790 100644 --- a/xen/arch/arm/domain.c +++ b/xen/arch/arm/domain.c @@ -201,6 +201,9 @@ int arch_domain_create(struct domain *d, unsigned int domcr_flags) clear_page(d->shared_info); share_xen_page_with_guest( virt_to_page(d->shared_info), d, XENSHARE_writable); + + if ( (rc = p2m_alloc_table(d)) != 0 ) + goto fail; } d->max_vcpus = 8; diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c index 15632f7..6687e50 100644 --- a/xen/arch/arm/domain_build.c +++ b/xen/arc...

This is my current set of updates to Xen for 2.6.24. This is largely a bugfix set, and a couple of them are also relevent to 2.6.23. These are in the pre-x86 merge form; I'll update them once the merge goes into git. Quick overview: - remove some dead code in arch/i386/mm/init.c - clean up some duplicate includes - when sending an IPI, yield the vcpu if the destination doesn't have

This is my current set of updates to Xen for 2.6.24. This is largely a bugfix set, and a couple of them are also relevent to 2.6.23. These are in the pre-x86 merge form; I'll update them once the merge goes into git. Quick overview: - remove some dead code in arch/i386/mm/init.c - clean up some duplicate includes - when sending an IPI, yield the vcpu if the destination doesn't have

This is my current set of updates to Xen for 2.6.24. This is largely a bugfix set, and a couple of them are also relevent to 2.6.23. These are in the pre-x86 merge form; I'll update them once the merge goes into git. Quick overview: - remove some dead code in arch/i386/mm/init.c - clean up some duplicate includes - when sending an IPI, yield the vcpu if the destination doesn't have

Hi again all, It turns out that networking really wants ordered requests, which the previous patches didn't allow. This patch changes it to a callback mechanism; kudos to Avi. The downside is that locking is more complicated, and after a few dead ends I implemented the simplest solution: the struct virtio_device contains the spinlock to use, and it's held when your callbacks get

Hi again all, It turns out that networking really wants ordered requests, which the previous patches didn't allow. This patch changes it to a callback mechanism; kudos to Avi. The downside is that locking is more complicated, and after a few dead ends I implemented the simplest solution: the struct virtio_device contains the spinlock to use, and it's held when your callbacks get

Hi again all, It turns out that networking really wants ordered requests, which the previous patches didn't allow. This patch changes it to a callback mechanism; kudos to Avi. The downside is that locking is more complicated, and after a few dead ends I implemented the simplest solution: the struct virtio_device contains the spinlock to use, and it's held when your callbacks get

From: Xiao Guangrong <xiaoguangrong at cn.fujitsu.com> We can use alloc_page() instead of get_zeroed_page() and virt_to_page() Signed-off-by: Xiao Guangrong <xiaoguangrong at cn.fujitsu.com> Signed-off-by: Rusty Russell <rusty at rustcorp.com.au> --- drivers/lguest/core.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/lguest/core.c b/drivers/lguest/core.c index 1e2cb84.....

From: Xiao Guangrong <xiaoguangrong at cn.fujitsu.com> We can use alloc_page() instead of get_zeroed_page() and virt_to_page() Signed-off-by: Xiao Guangrong <xiaoguangrong at cn.fujitsu.com> Signed-off-by: Rusty Russell <rusty at rustcorp.com.au> --- drivers/lguest/core.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/lguest/core.c b/drivers/lguest/core.c index 1e2cb84.....