search for: page_alloc_lock

...ng.c @@ -639,7 +639,7 @@ static int page_make_sharable(struct domain *d, } page_set_owner(page, dom_cow); - d->tot_pages--; + domain_decrease_tot_pages(d, 1); drop_dom_ref = (d->tot_pages == 0); page_list_del(page, &d->page_list); spin_unlock(&d->page_alloc_lock); @@ -680,7 +680,7 @@ static int page_make_private(struct domain *d, struct page_info *page) ASSERT(page_get_owner(page) == dom_cow); page_set_owner(page, d); - if ( d->tot_pages++ == 0 ) + if ( domain_increase_tot_pages(d, 1) == 0 ) get_domain(d); page_list_add_t...

These two patches were originally part of the XSM series that I have posted, and remain prerequisites for that series. However, they are independent of the XSM changes and are a useful simplification regardless of the use of XSM. The Acked-bys on these patches were provided before rebasing them over the copyback changes in 26268:1b72138bddda, which had minor conflicts that I resolved. [PATCH

..._handle, diff -r 58d131f1fb35 -r 2c9db26f1d0e xen/arch/ia64/xen/domain.c --- a/xen/arch/ia64/xen/domain.c Fri Aug 24 16:32:56 2007 +0100 +++ b/xen/arch/ia64/xen/domain.c Tue Aug 28 13:06:41 2007 +0900 @@ -936,7 +936,7 @@ static void relinquish_memory(struct dom spin_unlock_recursive(&d->page_alloc_lock); } -void domain_relinquish_resources(struct domain *d) +int domain_relinquish_resources(struct domain *d) { /* Relinquish guest resources for VT-i domain. */ if (d->vcpu[0] && VMX_DOMAIN(d->vcpu[0])) @@ -954,6 +954,8 @@ void domain_relinquish_resources(struct /*...

...amd_iov_error("Invalid IO pagetable entry phys_addr = %lx\n", + phys_addr); return -EFAULT; } @@ -582,8 +582,8 @@ int amd_iommu_sync_p2m(struct domain *d) if ( iommu_l2e == 0 ) { spin_unlock(&d->page_alloc_lock); - amd_iov_error("Invalid IO pagetable entry gfn = %lx\n", gfn); spin_unlock_irqrestore(&hd->mapping_lock, flags); + amd_iov_error("Invalid IO pagetable entry gfn = %lx\n", gfn); return -EFAULT; } ___________...

...REGARDING LACK OF EMBARGO ============================== While the response to this issue was being prepared by the security team, the bug was independently discovered by a third party who publicly disclosed it without realising the security impact. ISSUE DESCRIPTION ================= The locks page_alloc_lock and grant_table.lock are not always taken in the same order. This opens the possibility of deadlock. IMPACT ====== A malicious guest administrator can deny service to the entire host. VULNERABLE SYSTEMS ================== Xen versions going back to at least Xen 3.2 are vulnerable. To exploit...

This patch series is a reworking of a series developed by Mukesh Rathor at Oracle. The entirety of the design and development was done by him; I have only reworked, reorganized, and simplified things in a way that I think makes more sense. The vast majority of the credit for this effort therefore goes to him. This version is labelled v13 because it is based on his most recent series, v11.

What are the outstanding things to do before we think we can start on the 4.2 -rc''s? Does anyone have a timetable in mind? hypervisor: * ??? - Keir, Tim, Jan? tools: * libxl stable API -- we would like 4.2 to define a stable API which downstream''s can start to rely on not changing. Aspects of this are: * event handling (IanJ working