search for: l1e_from_pfn

This patch series restores the use of superpages when restoring or migrating a VM, while retaining efficient batching of 4k pages when superpages are not appropriate or available. Signed-off-by: George Dunlap <george.dunlap@eu.citrix.com> _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel

There has been some progress, but still no joy. Definitely not intended for inclusion at this point. Tim, Wei, I added a Xen command line toggle to disable IOMMU and P2M table sharing. Tim, I verified that changes to p2m-pt.c don''t break shadow mode (64bit hypervisor and Win 7 guest). Hongkaixing, I incorporated your suggestion in patch 2, so I should add your Signed-off-by eventually.

...ow that we''re not going to need the LDT for HVM guests, + * and only HVM guests are allowed unaligned writes. */ + map = (void *)LDT_VIRT_START(v); + offset = l1_linear_offset((unsigned long) map); + l1e_write(&__linear_l1_table[offset], + l1e_from_pfn(mfn_x(mfn1), __PAGE_HYPERVISOR)); + l1e_write(&__linear_l1_table[offset + 1], + l1e_from_pfn(mfn_x(mfn2), __PAGE_HYPERVISOR)); + flush_tlb_local(); + map += (vaddr & ~PAGE_MASK); + } + + return map; +} + +/* Tidy up after the emulated write: undo...

...set(hva)] = + l2e_from_pfn (l1_mfn, __PAGE_HYPERVISOR); + printk("map_param_share_page: set l2 page table entry\n"); + + /* set l1 page table */ + mpl1e = (l1_pgentry_t *)map_domain_page(l1_mfn); + memset(mpl1e, 0, PAGE_SIZE); + mpl1e[l1_table_offset(hva)] = + l1e_from_pfn(mfn, __PAGE_HYPERVISOR); + unmap_domain_page(mpl1e); + printk("map_param_share_page: set l1 page table entry\n"); + + return 0; +} + +asmlinkage unsigned long do_virtual_device_op(unsigned long op, + unsigned long arg1, +...

...Yunhong Jiang @@ -967,13 +967,13 @@ shadow_set_p2m_entry(struct domain *d, u p2m_entry = p2m_find_entry(table, &gfn_remainder, gfn, 0, L1_PAGETABLE_ENTRIES); ASSERT(p2m_entry); - if ( valid_mfn(mfn) ) + if ( mfn_valid(mfn) ) *p2m_entry = l1e_from_pfn(mfn_x(mfn), __PAGE_HYPERVISOR|_PAGE_USER); else *p2m_entry = l1e_empty(); /* Track the highest gfn for which we have ever had a valid mapping */ - if ( valid_mfn(mfn) && (gfn > d->arch.max_mapped_pfn) ) + if ( mfn_valid(mfn) && (gfn > d->arch.ma...

...ne cpumask_t vcpumask_to_pcpu return pmask; } +#ifdef __i386__ +static inline void *fixmap_domain_page(unsigned long mfn) +{ + unsigned int cpu = smp_processor_id(); + void *ptr = (void *)fix_to_virt(FIX_PAE_HIGHMEM_0 + cpu); + + l1e_write(fix_pae_highmem_pl1e - cpu, + l1e_from_pfn(mfn, __PAGE_HYPERVISOR)); + flush_tlb_one_local(ptr); + return ptr; +} +static inline void fixunmap_domain_page(const void *ptr) +{ + unsigned int cpu = virt_to_fix((unsigned long)ptr) - FIX_PAE_HIGHMEM_0; + + l1e_write(fix_pae_highmem_pl1e - cpu, l1e_empty()); + this_cpu(make_cr3_ti...

...ne cpumask_t vcpumask_to_pcpu return pmask; } +#ifdef __i386__ +static inline void *fixmap_domain_page(unsigned long mfn) +{ + unsigned int cpu = smp_processor_id(); + void *ptr = (void *)fix_to_virt(FIX_PAE_HIGHMEM_0 + cpu); + + l1e_write(fix_pae_highmem_pl1e - cpu, + l1e_from_pfn(mfn, __PAGE_HYPERVISOR)); + flush_tlb_one_local(ptr); + return ptr; +} +static inline void fixunmap_domain_page(const void *ptr) +{ + unsigned int cpu = virt_to_fix((unsigned long)ptr) - FIX_PAE_HIGHMEM_0; + + l1e_write(fix_pae_highmem_pl1e - cpu, l1e_empty()); + this_cpu(make_cr3_ti...

Hi, V6: The only change from V5 is in patch #6: - changed comment to reflect autoxlate - removed a redundant ASSERT - reworked logic a bit so that get_page_from_gfn() is called with NULL for p2m type as before. arm has ASSERT wanting it to be NULL. Tim: patch 4 needs your approval. Daniel: patch 5 needs your approval. These patches implement PVH dom0. Patches 1 and 2