search for: __direct_remap_pfn_range

hello, I would like to map (Read/Write) pages owned by a HVM guest from my Dom0 Linux kernel module. I have access to the "machine frame numbers" of these pages. 1. What is the right interface to do this? kmap needs ''struct page'' ptrs which I doubt exist for pages owned by a HVM guest. Is there a hypercall to do this then? 2. Do I need to modify the HVM behavior in

...xen.c Tue Feb 7 20:46:13 2006 +++ b/linux-2.6-xen-sparse/arch/i386/mm/ioremap-xen.c Tue Feb 7 23:46:21 2006 @@ -120,7 +120,7 @@ domid_t domid) { /* Same as remap_pfn_range(). */ - vma->vm_flags |= VM_IO | VM_RESERVED; + vma->vm_flags |= VM_IO | VM_RESERVED | VM_PFNMAP; return __direct_remap_pfn_range( vma->vm_mm, address, mfn, size, prot, domid); _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel

...long p return NULL; area->phys_addr = phys_addr; addr = (void __iomem *) area->addr; - flags |= _KERNPG_TABLE; + /* This doesn''t mean the page will always be readonly - caller + could have passed in _PAGE_RW in flags */ + flags |= _KERNPG_TABLE_READONLY; if (__direct_remap_pfn_range(&init_mm, (unsigned long)addr, phys_addr>>PAGE_SHIFT, size, __pgprot(flags), domid)) { @@ -285,7 +287,7 @@ void __iomem *ioremap_nocache (unsigned void __iomem *ioremap_nocache (unsigned long phys_addr, unsigned long size) { unsigned long last_addr; - void __iomem...

This is a cherry pick of two patches that add support for guest paged out frames in the XCP 2.6.32 dom0 patch queue. First patch propagates the ENOENT returned by the hypervisor in the case of a paged out page, all the way up the call chain to the MMAPBATCH_V2 ioctl. The ioctl is mainly used to harvest those return values and retry. The second patch adds retry loops to all backend grant

Hi everyone, I am very excited to see that dom0 pvops is finally coming close to working, so I wanted to give it a try. >From the description it was not clear to me which kernel to chose as base for the patches.hg, so I took the latest (that was ~ 2 weeks ago) kernel on git.kernel.org I could find (post-2.6.28 git tip at that point). I managed to more or less apply all of the patches in the