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...I am using Xen 4.1.2 (installed from source tarball) with an Ubuntu 11.10 dom0, using the supplied kernel-server-3.0.0-14 image. I have the xen_blkfront module loaded, and see the following message which makes me think I am almost there: [ 8494.188638] blkfront device/vbd/51728 num-ring-pages 1 nr_ents 32. Also, if I attempt xl block-detach for that device, takes up to 30 seconds to return, and following that, xl block-list 0 segfaults. I saw this thread on xen-devel, but it wasn''t clear to me if there has been any resolution of this issue: http://markmail.org/message/siovef5nlq56xuqf...

...orage driver... [ 0.690699] usbcore: registered new interface driver usb-storage [ 0.690706] USB Mass Storage support registered. FATAL: Error inserting video (/lib/modules/2.6.38-11-server/kernel/drivers/acpi/video.ko): No such device [ 0.754312] blkfront device/vbd/51714 num-ring-pages 1 nr_ents 32. [ 0.763736] Initialising Xen virtual ethernet driver. [ 0.764371] blkfront device/vbd/51713 num-ring-pages 1 nr_ents 32. [ 0.778114] Event-channel device installed. [ 0.821458] SGI XFS with ACLs, security attributes, realtime, large block/inode numbers, no debug enabled [ 0.8265...

....orig/xen/include/public/xen.h 2008-06-17 13:59:52.000000000 +0200 +++ 2008-07-21/xen/include/public/xen.h 2008-07-21 08:36:26.000000000 +0200 @@ -231,6 +231,13 @@ DEFINE_XEN_GUEST_HANDLE(xen_pfn_t); * cmd: MMUEXT_SET_LDT * linear_addr: Linear address of LDT base (NB. must be page-aligned). * nr_ents: Number of entries in LDT. + * + * cmd: MMUEXT_CLEAR_PAGE + * mfn: Machine frame number to be cleared. + * + * cmd: MMUEXT_COPY_PAGE + * mfn: Machine frame number of the destination page. + * src_mfn: Machine frame number of the source page. */ #define MMUEXT_PIN_L1_TABLE 0 #define MMUEXT...

...case MMUEXT_TLB_FLUSH_ALL: + case MMUEXT_FLUSH_CACHE: + case MMUEXT_NEW_USER_BASEPTR: + case MMUEXT_FLUSH_CACHE_GLOBAL: + /* None */ + break; + } + + switch(op->cmd) { + case MMUEXT_SET_LDT: + PRE_MEM_READ("__HYPERVISOR_MMUEXT_OP arg2.nr_ents", + (Addr)&op->arg2.nr_ents, + sizeof(op->arg2.nr_ents)); + break; + + case MMUEXT_TLB_FLUSH_MULTI: + case MMUEXT_INVLPG_MULTI: + /* How many??? */ + PRE_MEM_READ("__HYPERVISOR_MMUEXT_OP arg2.vcpumask&q...

...UEXT_INVLPG_ALL + * linear_addr: Linear address to be flushed from all VCPUs'' TLBs. + * + * cmd: MMUEXT_FLUSH_CACHE + * No additional arguments. Writes back and flushes cache contents. + * + * cmd: MMUEXT_SET_LDT + * linear_addr: Linear address of LDT base (NB. must be page-aligned). + * nr_ents: Number of entries in LDT. + */ +#define MMUEXT_PIN_L1_TABLE 0 +#define MMUEXT_PIN_L2_TABLE 1 +#define MMUEXT_PIN_L3_TABLE 2 +#define MMUEXT_PIN_L4_TABLE 3 +#define MMUEXT_UNPIN_TABLE 4 +#define MMUEXT_NEW_BASEPTR 5 +#define MMUEXT_TLB_FLUSH_LOCAL 6 +#define MMUEX...

....orig/xen/include/public/xen.h 2008-09-15 11:25:43.000000000 +0200 +++ 2008-09-19/xen/include/public/xen.h 2008-09-19 14:00:01.000000000 +0200 @@ -231,6 +231,13 @@ DEFINE_XEN_GUEST_HANDLE(xen_pfn_t); * cmd: MMUEXT_SET_LDT * linear_addr: Linear address of LDT base (NB. must be page-aligned). * nr_ents: Number of entries in LDT. + * + * cmd: MMUEXT_CLEAR_PAGE + * mfn: Machine frame number to be cleared. + * + * cmd: MMUEXT_COPY_PAGE + * mfn: Machine frame number of the destination page. + * src_mfn: Machine frame number of the source page. */ #define MMUEXT_PIN_L1_TABLE 0 #define MMUEXT...

This patch series implements the Linux Xen guest in terms of the paravirt-ops interface. The features in implemented this patch series are: * domU only * UP only (most code is SMP-safe, but there's no way to create a new vcpu) * writable pagetables, with late pinning/early unpinning (no shadow pagetable support) * supports both PAE and non-PAE modes * xen console * virtual block

This patch series implements the Linux Xen guest in terms of the paravirt-ops interface. The features in implemented this patch series are: * domU only * UP only (most code is SMP-safe, but there's no way to create a new vcpu) * writable pagetables, with late pinning/early unpinning (no shadow pagetable support) * supports both PAE and non-PAE modes * xen console * virtual block

This patch series implements the Linux Xen guest in terms of the paravirt-ops interface. The features in implemented this patch series are: * domU only * UP only (most code is SMP-safe, but there's no way to create a new vcpu) * writable pagetables, with late pinning/early unpinning (no shadow pagetable support) * supports both PAE and non-PAE modes * xen console * virtual block

...hipset [ 0.706669] agpgart-intel 0000:00:06.0: detected gtt size: 2097152K total, 262144K mappable [ 0.707625] agpgart-intel 0000:00:06.0: detected 65536K stolen memory [ 0.712747] brd: module loaded [ 0.713276] loop: module loaded [ 0.720074] blkfront device/vbd/768 num-ring-pages 1 nr_ents 32. [ 0.720628] vbd vbd-5632: 19 xenbus_dev_probe on device/vbd/5632 [ 0.720855] vbd vbd-5632: failed to write error node for device/vbd/5632 (19 xenbus_dev_probe on device/vbd/5632) [ 0.721371] ata_piix 0000:00:01.1: version 2.13 [ 0.721978] ata_piix 0000:00:01.1: setting latency time...

Hi Andi, This patch series implements the Linux Xen guest as a paravirt_ops backend. The features in implemented this patch series are: * domU only * UP only (most code is SMP-safe, but there's no way to create a new vcpu) * writable pagetables, with late pinning/early unpinning (no shadow pagetable support) * supports both PAE and non-PAE modes * xen hvc console (console=hvc0) *

Hi Andi, This patch series implements the Linux Xen guest as a paravirt_ops backend. The features in implemented this patch series are: * domU only * UP only (most code is SMP-safe, but there's no way to create a new vcpu) * writable pagetables, with late pinning/early unpinning (no shadow pagetable support) * supports both PAE and non-PAE modes * xen hvc console (console=hvc0) *

Hi Andi, This patch series implements the Linux Xen guest as a paravirt_ops backend. The features in implemented this patch series are: * domU only * UP only (most code is SMP-safe, but there's no way to create a new vcpu) * writable pagetables, with late pinning/early unpinning (no shadow pagetable support) * supports both PAE and non-PAE modes * xen hvc console (console=hvc0) *

Hi Andi, This patch series implements the Linux Xen guest in terms of the paravirt-ops interface. The features in implemented this patch series are: * domU only * UP only (most code is SMP-safe, but there's no way to create a new vcpu) * writable pagetables, with late pinning/early unpinning (no shadow pagetable support) * supports both PAE and non-PAE modes * xen console * virtual

Hi Andi, This patch series implements the Linux Xen guest in terms of the paravirt-ops interface. The features in implemented this patch series are: * domU only * UP only (most code is SMP-safe, but there's no way to create a new vcpu) * writable pagetables, with late pinning/early unpinning (no shadow pagetable support) * supports both PAE and non-PAE modes * xen console * virtual

Hi Andi, This patch series implements the Linux Xen guest in terms of the paravirt-ops interface. The features in implemented this patch series are: * domU only * UP only (most code is SMP-safe, but there's no way to create a new vcpu) * writable pagetables, with late pinning/early unpinning (no shadow pagetable support) * supports both PAE and non-PAE modes * xen console * virtual

Unlike full virtualization in which the virtual machine provides the same platform interface as running natively on the hardware, paravirtualization requires modification to the guest operating system to work with the platform interface provided by the hypervisor. Xen was designed with performance in mind. Calls to the hypervisor are minimized, batched if necessary, and non-critical codepaths

Unlike full virtualization in which the virtual machine provides the same platform interface as running natively on the hardware, paravirtualization requires modification to the guest operating system to work with the platform interface provided by the hypervisor. Xen was designed with performance in mind. Calls to the hypervisor are minimized, batched if necessary, and non-critical codepaths

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