search for: hypervisor_mmu_update

Hello, I am hacking on a Mini-OS that is able to run as domain 0 and is able to start a guest (another Mini-OS for now). I was able to get a memory allocated to the guest and am now trying to build its pagetable and after that copy the kernel to the right places. The problem is: Given a machine frame number from a memory frame of the guest, how do I conceptionally map this into

hi, I''m developing my own 32-bit (no PAE) paravirtualized kernel for xen with Mini-OS as a starting point. I am currently working on process page table support (equivalent of arch/i386/mm/pgtable-xen.c) and mostly following Linux for the moment. I noticed that linux-2.6.18-xen never pins an L1 table (a pte), yet __pgd_pin() walks the page directory and gives up write access on the kernel

> I have come accross a problem when trying to do a > direct_remap_area_pages() call in a backend driver that is > running in a privileged user domain. The call ends up with an > error code (-14 = -EFAULT). This in turn is caused by the > hypervisor call > HYPERVISOR_mmu_update() which returns an error code of -22 = > -EINVAL after failing in set_foreigndom due to not (!?!) > being privileged. The same call returns no error if run in domain-0. > However, I found the solution to fix this. I needed to make > a fake(*) PCI device available to the privileged...

...irt_to_machine(pte) | MMU_PT_UPDATE_PRESERVE_AD; + u[i].ptr = (__pmd_val(*pmd) & PHYSICAL_PAGE_MASK) + | ((unsigned long)pte & ~PAGE_MASK) + | MMU_PT_UPDATE_PRESERVE_AD; u[i].val = __pte_val(pte_modify(*pte, newprot)); if (++i == MAX_BATCHED_FULL_PTES) { if ((rc = HYPERVISOR_mmu_update( _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel

...==================================== --- head-2007-10-15.orig/arch/i386/mm/hypervisor.c 2007-10-19 17:17:09.000000000 +0200 +++ head-2007-10-15/arch/i386/mm/hypervisor.c 2007-10-19 17:17:59.000000000 +0200 @@ -56,6 +56,7 @@ void xen_l1_entry_update(pte_t *ptr, pte u.val = __pte_val(val); BUG_ON(HYPERVISOR_mmu_update(&u, 1, NULL, DOMID_SELF) < 0); } +EXPORT_SYMBOL_GPL(xen_l1_entry_update); void xen_l2_entry_update(pmd_t *ptr, pmd_t val) { Index: head-2007-10-15/drivers/xen/blktap/blktap.c =================================================================== --- head-2007-10-15.orig/drivers/xen/blktap/...

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

Hi, I have installed b_78 on a Dell 2950 and booting to bare metal works fine but when I try to boot using the grub entry Solaris xVM it will boot to the point where it displays the uname info and then just stays there. It will not boot past that point. I have enabled VT technology in the BIOS (but only after the installation). Where/what can I look at to trouble shoot this? I am new to xen and

Hi, everyone I know that this has been asked to death on the list, and in the past few days I''ve been trying to see if there were other options for getting a xen host to use more than 4GB of RAM. I''ve tried xen-unstable x86_64 on Xeon EM64Ts as well as xen-unstable with the initial PAE support but neither got me too far from booting: the former hangs when using the supplied

...stion is the following: mmu_updates[0].ptr = ((pgentry_t)tab[l2_table_offset(pt_page)] & PAGE_MASK) + sizeof(pgentry_t) * l1_table_offset(pt_page); mmu_updates[0].val = ((pgentry_t)pfn_to_mfn(*pt_pfn) << PAGE_SHIFT) | _PAGE_RW | _PAGE_PRESENT; if(HYPERVISOR_mmu_update(mmu_updates, 1, NULL, DOMID_SELF) < 0) { printk("New PT could not be mapped R/W.\n"); do_exit(); } Any help is appreciated. Regards, Julian _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lis...

I am learning xen's memory management recently. I find most docs is how to use the hypercall related memory management. Can somesome tell me where is the implementation of the them in the xen source. Or some docs explaining it will be ideal. 年少不惧江湖老，放歌四海任逍遥。未解前路多少事，欲与青天试比高。 _______________________________________________ Xen-users mailing list Xen-users@lists.xen.org

...lude "arch-x86_64.h" +#elif defined(__ia64__) +#include "arch-ia64.h" +#elif defined(__powerpc__) +#include "arch-powerpc.h" +#else +#error "Unsupported architecture" +#endif + +/* + * HYPERCALLS + */ + +#define __HYPERVISOR_set_trap_table 0 +#define __HYPERVISOR_mmu_update 1 +#define __HYPERVISOR_set_gdt 2 +#define __HYPERVISOR_stack_switch 3 +#define __HYPERVISOR_set_callbacks 4 +#define __HYPERVISOR_fpu_taskswitch 5 +#define __HYPERVISOR_sched_op_compat 6 /* compat since 0x00030101 */ +#define __HYPERVISOR_plat...

On 31.10.13 04:34, Miguel Clara wrote: > I was trying to get a core-dump for a domU with xl and got this error: > > # xl dump-core 20 test.core > Memory fault > > GDB shows this: > > a# gdb xl xl.core > GNU gdb (GDB) 7.3.1 > Copyright (C) 2011 Free Software Foundation, Inc. > License GPLv3+: GNU GPL version 3 or later<http://gnu.org/licenses/gpl.html> >

Can''t seem to fully boot a domU on either EM64T or Opteron with x86_64 xen-unstable. Both systems'' report this from xen: (XEN) (file=traps.c, line=872) Non-priv domain attempted WRMSR(00000000c0000100. (XEN) (file=traps.c, line=872) Non-priv domain attempted WRMSR(00000000c0000102. (XEN) (file=traps.c, line=880) Non-priv domain attempted RDMSR(00000000c0000080. They boot

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

2011/7/19 Stefano Stabellini <stefano.stabellini@eu.citrix.com>: > CC''ing Tim and xen-devel > > On Mon, 18 Jul 2011, Jiageng Yu wrote: >> 2011/7/16 Stefano Stabellini <stefano.stabellini@eu.citrix.com>: >> > On Fri, 15 Jul 2011, Jiageng Yu wrote: >> >> 2011/7/15 Jiageng Yu <yujiageng734@gmail.com>: >> >> > 2011/7/15

This patch series contains a set of patches making minios rather easier to use, from an application development point of view. Overview of patches: 1 Command line argument parsing support, from Xen. 2 Weak console handler function. 3 Build system tweaks for application directories. 4 Trailing whitespace cleanup. (because it is very messy) Patch 4 is likely to be more controversial than

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

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