search for: hypervisor_update_va_mapping

Installed 134 on some IBM x3550 and keep getting the message: HYPERVISOR_update_va_mapping failed. Press any key to reboot. Is there anything I can do to try to get around it? 134 boots just fine without XEN. -- This message posted from opensolaris.org

The ARM platform has no concept of PVMMU and therefor no HYPERVISOR_update_va_mapping et al. Allow this code to be compiled out when not required. In some similar situations (e.g. P2M) we have defined dummy functions to avoid this, however I think we can/should draw the line at dummying out actual hypercalls. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> --- arch/x8...

...e) { SetPageForeign(pte, pte_free); set_page_count(pte, 1); } -#endif return pte; } void pte_free(struct page *pte) { - unsigned long va = (unsigned long)__va(page_to_pfn(pte)<<PAGE_SHIFT); + unsigned long pfn = page_to_pfn(pte); - if (!pte_write(*virt_to_ptep(va))) - BUG_ON(HYPERVISOR_update_va_mapping( - va, pfn_pte(page_to_pfn(pte), PAGE_KERNEL), 0)); + if (!PageHighMem(pte)) { + unsigned long va = (unsigned long)__va(pfn << PAGE_SHIFT); + + if (!pte_write(*virt_to_ptep(va))) + BUG_ON(HYPERVISOR_update_va_mapping( + va, pfn_pte(pfn, PAGE_KERNEL), 0)); + } else { + struct m...

...to understand the code of balloon ,and got confused about the following parts of code: static int decrease_reservation(unsigned long nr_pages) { .... if (!PageHighMem(page)) { v = phys_to_virt(pfn << PAGE_SHIFT); scrub_pages(v, 1); ret = HYPERVISOR_update_va_mapping( (unsigned long)v, __pte_ma(0), 0); BUG_ON(ret); } #ifdef CONFIG_XEN_SCRUB_PAGES else { v = kmap(page); scrub_pages(v, 1); kunmap(page); } #endif .... } I am confused about the scrub_pages(), what is the m...

This series implements ballooning for Xen on ARM and builds and Mukesh''s PVH privcmd stuff to implement foreign page mapping on ARM, replacing the old "HACK: initial (very hacky) XENMAPSPACE_gmfn_foreign" patch. The baseline is a bit complex, it is basically Stefano''s xenarm-forlinus branch (commit bbd6eb29214e) merged with Konrad''s linux-next-pvh branch

...ge); + /* + * Ballooned out frames are effectively replaced with + * a scratch frame. Ensure direct mappings and the + * p2m are consistent. + */ + scratch_page = get_balloon_scratch_page(); #ifdef CONFIG_XEN_HAVE_PVMMU if (xen_pv_domain() && !PageHighMem(page)) { ret = HYPERVISOR_update_va_mapping( @@ -422,24 +426,19 @@ static enum bp_state decrease_reservation(unsigned long nr_pages, gfp_t gfp) BUG_ON(ret); } #endif - } - - /* Ensure that ballooned highmem pages don''t have kmaps. */ - kmap_flush_unused(); - flush_tlb_all(); - - /* No more mappings: invalidate P2M and add to...

...[] = { virt_to_mfn(0), virt_to_mfn(&shared_info) }; + xen_pfn_t mfns[] = { virt_to_mfn(&shared_info) }; int n = sizeof(mfns)/sizeof(*mfns); pte_t nullpte = { }; + /* Use page 0 as the CoW zero page */ + memset(NULL, 0, PAGE_SIZE); + mfn_zero = pfn_to_mfn(0); if (HYPERVISOR_update_va_mapping(0, nullpte, UVMF_INVLPG)) printk("Unable to unmap page 0\n"); diff -r 27ad7ed41be2 extras/mini-os/arch/x86/traps.c --- a/extras/mini-os/arch/x86/traps.c Fri Jan 18 15:55:13 2008 +0000 +++ b/extras/mini-os/arch/x86/traps.c Fri Jan 18 16:02:32 2008 +0000 @@ -118,6 +118,46 @@ void page_w...

...iled: %i\n", + __func__, ret); + goto error; + } + + if (xen_pv_domain()) { + pfn = PFN_DOWN(balloon_stats.hotplug_start_paddr); + pfn_limit = pfn + (balloon_stats.hotplug_size >> PAGE_SHIFT); + + for (; pfn < pfn_limit; ++pfn) + if (!PageHighMem(pfn_to_page(pfn))) + BUG_ON(HYPERVISOR_update_va_mapping( + (unsigned long)__va(pfn << PAGE_SHIFT), + mfn_pte(pfn_to_mfn(pfn), PAGE_KERNEL), 0)); + } + + ret = online_pages(PFN_DOWN(balloon_stats.hotplug_start_paddr), + balloon_stats.hotplug_size >> PAGE_SHIFT); + + if (ret) { + pr_err("%s: online_pages: Failed: %i\n", _...

This is the error HYPERVISOR_UPDATE_va_mapping() failed Press any key to reboot. Please help. Thanks a lot. -- This message posted from opensolaris.org

hi, all, I read this sentence. Guest OSes are responsible for allocating and initializing PTs for processes (restricted to read only access) allocates and initialize a page and register it with Xen to serve as the new PT Can any one teach me where is the code about registering a page with Xen in Xen''s code? I appreciate your help! Thanks. Wait

...========================================= --- linux-2.6.11.orig/arch/xen/i386/mm/pgtable.c 2005-06-22 16:25:17.000000000 +0200 +++ linux-2.6.11/arch/xen/i386/mm/pgtable.c 2005-06-23 18:20:45.000000000 +0200 @@ -486,7 +486,8 @@ void mm_pin(struct mm_struct *mm) mm_walk(mm, PAGE_KERNEL_RO); HYPERVISOR_update_va_mapping( (unsigned long)mm->pgd, - pfn_pte(virt_to_phys(mm->pgd)>>PAGE_SHIFT, PAGE_KERNEL_RO), 0); + pfn_pte(virt_to_phys(mm->pgd)>>PAGE_SHIFT, PAGE_KERNEL_RO), + UVMF_TLB_FLUSH); xen_pgd_pin(__pa(mm->pgd)); mm->context.pinned = 1; spin_lock(...

...n-sparse/include/asm-xen/asm-ia64/hypercall.h --- a/linux-2.6-xen-sparse/include/asm-xen/asm-ia64/hypercall.h Sun Dec 4 19:12:00 2005 +++ b/linux-2.6-xen-sparse/include/asm-xen/asm-ia64/hypercall.h Tue Dec 6 16:25:53 2005 @@ -355,34 +355,27 @@ #endif return 1; } +#endif static inline int HYPERVISOR_update_va_mapping( unsigned long va, pte_t new_val, unsigned long flags) { -#if 0 - int ret; - unsigned long ign1, ign2, ign3; - - __asm__ __volatile__ ( - TRAP_INSTR - : "=a" (ret), "=b" (ign1), "=c" (ign2), "=d" (ign3) - : "0" (__HYPERV...

Hi, when creating a bigger (> 50 GB) HVM guest with maxmem > memory we get softlockups from time to time. kernel: [ 802.084335] BUG: soft lockup - CPU#1 stuck for 22s! [xend:31351] I tracked this down to the call of xc_domain_set_pod_target() and further p2m_pod_set_mem_target(). Unfortunately I can this check only with xen-4.2.2 as I don''t have a machine with enough memory for

Hi, Here is the third version of memory hotplug support for Xen guests patch. This one cleanly applies to git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen.git repository, xen/memory-hotplug head. On Fri, Aug 06, 2010 at 04:03:18PM +0400, Vasiliy G Tolstov wrote: [...] > Testing on sles 11 sp1 and opensuse 11.3. On results - send e-mail.. Thx. On Fri, Aug 06, 2010 at 12:34:08PM

...llowing simple sequence of events from domain zero: 1. Pause guest (unprivileged) 2. Grabs the PTE associated with a random (but present) page within the guest''s kernel''s address space (using a modified xc_translate_foreign_address) 3. Flips the present bit to zero 4. Calls HYPERVISOR_update_va_mapping otherdomain (from the kernel module) 5. Re-performs xc_translate_foreign_address on the same PTE 6. Verifies the the present bit was indeed changed to zero Upon successful return from update_va_mapping (i.e. return code == zero), my problem involves the last step mentioned above. The present bit s...

...G_ON(start_pfn != table_end); + table_end = table_rsrv_end; /* Re-vector virtual addresses pointing into the initial mapping to the just-established permanent ones. */ @@ -739,6 +773,24 @@ void __meminit init_memory_mapping(unsig for (; start < end; start += PAGE_SIZE) WARN_ON(HYPERVISOR_update_va_mapping( start, __pte_ma(0), 0)); + + /* Switch to the real shared_info page, and clear the + * dummy page. */ + set_fixmap(FIX_SHARED_INFO, xen_start_info->shared_info); + HYPERVISOR_shared_info = (shared_info_t *)fix_to_virt(FIX_SHARED_INFO); + memset(empty_zero_page, 0, sizeof(empty_zero_p...

We have implemented hugepage support for guests in following manner In our implementation we added a parameter hugepage_num which is specified in the config file of the DomU. It is the number of hugepages that the guest is guaranteed to receive whenever the kernel asks for hugepage by using its boot time parameter or reserving after booting (eg. Using echo XX > /proc/sys/vm/nr_hugepages).

Hi Andi, This series of patches implements the Xen paravirt-ops interface. It applies to 2.6.21-rc7 + your patches + the last batch of pv_ops patches I posted. This patch generally restricts itself to Xen-specific parts of the tree, though it does make a few small changes elsewhere. These patches include: - some helper routines for allocating address space and walking pagetables - Xen

Hi Andi, This series of patches implements the Xen paravirt-ops interface. It applies to 2.6.21-rc7 + your patches + the last batch of pv_ops patches I posted. This patch generally restricts itself to Xen-specific parts of the tree, though it does make a few small changes elsewhere. These patches include: - some helper routines for allocating address space and walking pagetables - Xen

Hi Andi, This series of patches implements the Xen paravirt-ops interface. It applies to 2.6.21-git13 + patches-2.6.21-git7-070507-1.tar.gz (I think "unwinder" is the only patch which doesn't apply to git13, and the sched-clock patches are the only ones which this series actually needs). Changes since the last posting: - More netfront review and cleanup - Added ability to