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...============================ --- 2007-12-10.orig/xen/arch/x86/mm.c 2007-12-05 17:13:57.000000000 +0100 +++ 2007-12-10/xen/arch/x86/mm.c 2007-12-10 09:22:53.000000000 +0100 @@ -2028,8 +2028,7 @@ static int set_foreigndom(domid_t domid) if ( unlikely(domid == d->domain_id) ) { - MEM_LOG("Dom %u tried to specify itself as foreign domain", - d->domain_id); + MEM_LOG("Cannot specify itself as foreign domain"); okay = 0; } else if ( unlikely(paging_mode_translate(d)) ) @@ -2045,7 +2044,7 @@ static int set_foreigndom(domid...

...k; } + case MMUEXT_CLEAR_PAGE: + { + unsigned char *ptr; + + okay = get_page_and_type_from_pagenr(mfn, PGT_writable_page, + FOREIGNDOM); + if ( unlikely(!okay) ) + { + MEM_LOG("Error while clearing mfn %lx", mfn); + break; + } + + /* A page is dirtied when it''s being cleared. */ + paging_mark_dirty(d, mfn); + + ptr = fixmap_domain_page(mfn); + clear_page(ptr); + fixunmap_d...

...rom L1 entry 0000000096efe027 for dom8 (XEN) DOM0: (file=mm.c, line=1266) Bad get_page_from_l1e(): pl1e = fefa6a30, nl1e = 96efe027, ol1e = 0, gl1mfn = d8538 (XEN) DOM0: (file=mm.c, line=2283) Could not modify L1 entry: va == fefa6a30, l1e == 96efe027, mfn == d8538 (I''ve added the two MEM_LOG() calls at line 1266 and 2283.) Any ideas where I should begin looking? Or is PAE support languishing? -- Randy _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel

...} + case MMUEXT_CLEAR_PAGE: + { + unsigned char *ptr; + + okay = !get_page_and_type_from_pagenr(mfn, PGT_writable_page, + FOREIGNDOM, 0); + if ( unlikely(!okay) ) + { + MEM_LOG("Error while clearing mfn %lx", mfn); + break; + } + + /* A page is dirtied when it''s being cleared. */ + paging_mark_dirty(d, mfn); + + ptr = fixmap_domain_page(mfn); + clear_page(ptr); + fixunmap_d...

...d = current->domain; - if ( !iomem_access_permitted(d, mfn, mfn) ) + if ( (access = iomem_access_permitted(d, mfn, mfn)) + == IOMEM_ACCESS_NOACCESS ) { if ( mfn != (PADDR_MASK >> PAGE_SHIFT) ) /* INVALID_MFN? */ MEM_LOG("Non-privileged (%u) attempt to map I/O space % 08lx", d->domain_id, mfn); + return 0; + } + + /* If access is IOMEM_ACCESS_READONLY, the l1e_get_flags below + should not have _PAGE_RW set */ + if(access == IOMEM_ACCES...

...? get_page_and_type(page, d, PGT_writable_page) - : get_page(page, d)); + writeable = (l1f & _PAGE_RW) && + !( unlikely(paging_mode_external(d) && (d != curr->domain)) ); + okay = get_data_page(page, d, writeable); if ( !okay ) { MEM_LOG("Error getting mfn %lx (pfn %lx) from L1 entry %" PRIpte @@ -759,11 +782,43 @@ get_page_from_l2e( MEM_LOG("Bad L2 flags %x", l2e_get_flags(l2e) & L2_DISALLOW_MASK); return -EINVAL; } + if ( l2e_get_flags(l2e) & _PAGE_PSE ) + { + unsign...

1: correct LDT checks 2: add address validity check to guest_map_l1e() 3: use {rd,wr}{fs,gs}base when available 4: check for canonical address before doing page walks Signed-off-by: Jan Beulich <jbeulich@suse.com>

Hi Keir: These two patches remove the need for netloop by performing the copying in netback and only if it is necessary. The rationale is that most packets will be processed without delay allowing them to be freed without copying at all. So instead of copying every packet destined to dom0 we''ll only copy those that linger longer than a specified amount of time (currently 0.5s). As it

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

I know you Xen developers are beginning to hate me ;) but... While trying to compile 2.4.24 under DOM0, quickly after issuing ''make dep'' I got: Kernel panic: Failed mmu update: c015bf80, 4 I suspect this address probably isn''t to helpful but this is all I have. I am currently booted in 2.4.21-SuSE and compiling the 2.4.24 regarding another thread here. Regarding

Hello, I''m new to Xen and especially to the hypervisor code. I''m working off a 3.0.4.1 base and have the following questions regarding the memory management code for an x86, 32-bit platform (capable of supporting PAE). I''m doing some research into providing grant table hypercall support from a Windows 2003 HVM. I have made all the necessary changes to allow the

...ear_offset(l1va)]; + ptep = &linear_pg_table[l1_linear_offset(l1va)]; /* * STEP 1. Write-protect the p.t. page so no more updates can occur. */ - if ( unlikely(__get_user(pte, ptep)) ) + if ( unlikely(__copy_from_user(&pte, ptep, sizeof(pte))) ) { MEM_LOG("ptwr: Could not read pte at %p\n", ptep); /* @@ -2325,17 +2328,17 @@ void ptwr_flush(const int which) } PTWR_PRINTK("[%c] disconnected_l1va at %p is %p\n", PTWR_PRINT_WHICH, ptep, pte); - pte &= ~_PAGE_RW; + l1_pgentry_val(pte) &amp...