search for: get_page_from_l1

Xen 3.2.1-rc1 64 bit Dom0: 2.6.16.33 PAE DomU: 2.6.18.8 (from a pull a few weeks ago) If you need the symbols, there from the same Xen I linked to in my post from a few days ago... (XEN) mm.c:3498:d4 ptwr_emulate: could not get_page_from_l1e() (XEN) Unhandled page fault in domain 4 on VCPU 0 (ec=0003) (XEN) Pagetable walk from 00000000c08187f0: (XEN) L4[0x000] = 00000004dfa38027 000000000000063c (XEN) L3[0x003] = 00000004e0071027 0000000000000003 (XEN) L2[0x004] = 00000004df8cd067 00000000000007a7 (XEN) L1[0x018] = 00000004df85c06...

...h/x86/mm.c Wed Jul 25 14:03:12 2007 +0100 @@ -594,6 +594,14 @@ get_##level##_linear_pagetable( return 1; \ } + +int iomem_page_test(unsigned long mfn, struct page_info *page) +{ + return unlikely(!mfn_valid(mfn)) || + unlikely(page_get_owner(page) == dom_io); +} + + int get_page_from_l1e( l1_pgentry_t l1e, struct domain *d) @@ -611,8 +619,7 @@ get_page_from_l1e( return 0; } - if ( unlikely(!mfn_valid(mfn)) || - unlikely(page_get_owner(page) == dom_io) ) + if ( iomem_page_test(mfn, page) ) { /* DOMID_IO reverts to caller for privileg...

...ERT(mfn_valid(mfn)); ASSERT((page->u.inuse.type_info & PGT_type_mask) == PGT_l1_page_table); ASSERT((page->u.inuse.type_info & PGT_count_mask) != 0); ASSERT(page_get_owner(page) == d); /* Check the new PTE. */ nl1e = l1e_from_intpte(val); - if ( unlikely(!get_page_from_l1e(gl1e_to_ml1e(d, nl1e), d)) ) + if ( unlikely(!get_page_from_l1e(nl1e, d)) ) { if ( (CONFIG_PAGING_LEVELS >= 3) && is_pv_32bit_domain(d) && (bytes == 4) && (addr & 4) && !do_cmpxchg && @@ -3270,7 +3271,7 @@ static int ptw...

...unaddressed the case where PV guests map the MSI-X table page(s) before setting up the first MSI-X interrupt (see the original c/s 22182:68cc3c514a0a description for options). Signed-off-by: Jan Beulich <jbeulich@suse.com> --- a/xen/arch/x86/mm.c +++ b/xen/arch/x86/mm.c @@ -869,7 +869,7 @@ get_page_from_l1e( return -EINVAL; } - if ( !(l1f & _PAGE_RW) || IS_PRIV(pg_owner) || + if ( !(l1f & _PAGE_RW) || !rangeset_contains_singleton(mmio_ro_ranges, mfn) ) return 0; dprintk(XENLOG_G_WARNING, ___________________________...

...bled state device vif8.0 entered promiscuous mode (XEN) DOM0: (file=mm.c, line=1688) Bad type (saw 28000001 != exp e0000000) for mfn 96efe (pfn 573) (XEN) DOM0: (file=mm.c, line=606) Error getting mfn 96efe (pfn 573) from 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 su...

...5 MHz (estimated) Counted CPU_CLK_UNHALTED events (Clock cycles when not halted) with a unit mask of 0x00 (Unhalted core cycles) count 100000 samples % image name app name symbol name 71855 4.6699 xen-syms-pae-3.0.4_13138-0.33 xen-syms-pae-3.0.4_13138-0.33 get_page_from_l1e 71812 4.6672 xen-syms-pae-3.0.4_13138-0.33 xen-syms-pae-3.0.4_13138-0.33 handle_exception 58634 3.8107 xen-syms-pae-3.0.4_13138-0.33 xen-syms-pae-3.0.4_13138-0.33 put_page_from_l1e 56301 3.6591 xen-syms-pae-3.0.4_13138-0.33 xen-syms-pae-3.0.4_13138-0.33 do_update_va_mapping 49543...

...5 MHz (estimated) Counted CPU_CLK_UNHALTED events (Clock cycles when not halted) with a unit mask of 0x00 (Unhalted core cycles) count 100000 samples % image name app name symbol name 71855 4.6699 xen-syms-pae-3.0.4_13138-0.33 xen-syms-pae-3.0.4_13138-0.33 get_page_from_l1e 71812 4.6672 xen-syms-pae-3.0.4_13138-0.33 xen-syms-pae-3.0.4_13138-0.33 handle_exception 58634 3.8107 xen-syms-pae-3.0.4_13138-0.33 xen-syms-pae-3.0.4_13138-0.33 put_page_from_l1e 56301 3.6591 xen-syms-pae-3.0.4_13138-0.33 xen-syms-pae-3.0.4_13138-0.33 do_update_va_mapping 49543...

This patch enables support of hugepages in a pv Xen environment. It is against the latest xen unstable tree on http://xenbits.xensource.com. The patch assumes the guest is passing a physically aligned hugepage. It does reference counting on all the underlying pages. Dave McCracken Oracle Corp. _______________________________________________ Xen-devel mailing list

...e console: Checking if this processor honours the WP bit even in supervisor mode... <1>BUG: unable to handle kernel paging request at virtual address c0f5672c and in xm dmesg: (XEN) mm.c:612:d18 Non-privileged (18) attempt to map I/O space 003fc2f2 (XEN) mm.c:3267:d18 ptwr_emulate: could not get_page_from_l1e() (Se details in attachement) It does not happen all times, if the DomU boots, then it will run fine for ages. If it crashes, it is always at boot time at that place. So workaround is to ''xm create'' until it boots... I can reproduce the problem in basically all the combination...

Hi, --- background ---------------------------------------------------- * what the makedumpfile is: To shorten the size of the dumpfile and the time of creating the dumpfile, makedumpfile copies only the necessary pages for analysis to the dumpfile from /proc/vmcore. You can specify the kind of unnecessary pages with dump_level. If you want to shorten the size further, enable the

...rc |= iomem_permit_access(dom0, 0UL, ~0UL, IOMEM_ACCESS_READWRITE); rc |= irqs_permit_access(dom0, 0, NR_IRQS-1); /* diff -r b58bcd6551e2 xen/arch/x86/mm.c --- a/xen/arch/x86/mm.c Fri Dec 01 16:21:46 2006 +0000 +++ b/xen/arch/x86/mm.c Fri Dec 01 16:22:41 2006 +0000 @@ -552,7 +552,7 @@ get_page_from_l1e( { unsigned long mfn = l1e_get_pfn(l1e); struct page_info *page = mfn_to_page(mfn); - int okay; + int okay, access; if ( !(l1e_get_flags(l1e) & _PAGE_PRESENT) ) return 1; @@ -570,11 +570,19 @@ get_page_from_l1e( if ( d == dom_io ) d = curr...

..._info *page, int writeable) +{ + if ( writeable ) + put_page_and_type(page); + else + put_page(page); +} + /* * We allow root tables to map each other (a.k.a. linear page tables). It * needs some special care with reference counts and access permissions: @@ -656,6 +679,7 @@ get_page_from_l1e( struct vcpu *curr = current; struct domain *owner; int okay; + int writeable; if ( !(l1f & _PAGE_PRESENT) ) return 1; @@ -698,10 +722,9 @@ get_page_from_l1e( * contribute to writeable mapping refcounts. (This allows the * qemu-dm helper process i...

This fixes various problems that cropped up with the vdso patches. - Patch 1 fixes an information leak to userspace. - Patches 2 and 3 fix the kernel build on gold. - Patches 4 and 5 fix Xen (I hope). - Patch 6 (optional) adds a trace event to vsyscall emulation. It will make it easier to handle performance regression reports :) [1]

This fixes various problems that cropped up with the vdso patches. - Patch 1 fixes an information leak to userspace. - Patches 2 and 3 fix the kernel build on gold. - Patches 4 and 5 fix Xen (I hope). - Patch 6 (optional) adds a trace event to vsyscall emulation. It will make it easier to handle performance regression reports :) [1]

This fixes various problems that cropped up with the vdso patches. - Patch 1 fixes an information leak to userspace. - Patches 2 and 3 fix the kernel build on gold. - Patches 4 and 5 fix Xen (I hope). - Patch 6 (optional) adds a trace event to vsyscall emulation. It will make it easier to handle performance regression reports :) [1]

Hello, Recently many advanced memory mechanisms are introduced into Xen. One problem we found is the conflict between p2m query and setting. For example, backend drivers always map domU’s page to its own space, during the mapping procedure, situations as follow may happen, when mfn is obtained by gfn_to_mfn(), this mfn is likely to be paged out. first case: grant mapping

Hi All, I am not very familiar with xen details. Now I am thinking of building two privilged domain(domain 0 not driver domain) at boot time. The other question is that wether it is possible to create another domain 0 by domain-builder running in domain0? Does it make sense when domain 0 is shut down unexpectedly another domain 0 can run at once. Maybe it is absurd. I am looking forwards

...Sep 2 18:56:37 glaurung genunix: /xpvd/xnb@42,0 (xnbo3) online Xen panic[dom=0xffff8300defb2080/vcpu=0xffff8300dfcdc080]: Xen BUG at mm.c:101 ffff828c8024f558 xpv:do_invalid_op+4d1 ffff828c8024f5f8 xpv:handle_exception+45 ffff828c8024f6d8 xpv:map_pages_to_xen+471 ffff828c8024f768 xpv:get_page_from_l1e+464 ffff828c8024f7c8 xpv:ptwr_emulated_update+142 ffff828c8024f848 xpv:ptwr_emulated_cmpxchg+a9 ffff828c8024f878 xpv:x86_emulate+525f ffff828c8024fe68 xpv:ptwr_do_page_fault+12e ffff828c8024fed8 xpv:do_page_fault+208 ffff828c8024ff18 xpv:handle_exception+45 ffffff003e031a90 unix:hati...

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

Hi, I installed Xen 4.0.1 from source on Debian 5.0.8 and when boot my computer hardware reboots at like "Scrubbing Free RAM". I tryed to find some information here but none was helpfull to me. Anyone? I have 4GB memory and a AMD Turion II X2 M500 (