The add hypercall will add a new PCI device and register it. The
remove hypercall will remove the pci_dev strucure for the device. The
IOMMU hardware (if present) will be notifed as well.
Add management and locking of PCI device structures
Add functions for managing pci_dev structures. Create a list
containing all current pci_devs. Remove msi_pdev_list. Create a
read-write lock protecting all pci_dev lists. Add spinlocks for
pci_dev access. Do necessary modifications to MSI code.
Restructure VT-d device scope and PCI bridge handling
Create a bitmap for each device scope indicating which buses are
covered by the scope. Upon mapping PCI-PCI bridges we now detect
whether we have a bridge to a non-PCIe bus. If so, all devices mapped
on that bus are squashed to the requester-id of the bridge. Bridges
to PCIe busses are ignored. The requester-id squashing also
determines the iommu device group id for the device.
Move the pci_dev list from hvm to arch_domain since PCI devs are no
longer hvm specific. Also removed locking for pci_dev lists. Will
reintroduce them later.
This makes stubdom use the host's gcc instead of downloading/compiling
binutils+gcc. That requires a bunch of changes and even uncovered a
few bugs, but saves a lot of time.
Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>
cvs -z3 -d:pserver:anonymous@cvs.savannah.nongnu.org:/sources/vgabios
co vgabios
Patchs backported:
- vgabios: Support VESA power management extensions. (cs 17692)
- x86, hvm: Allow Cirrus VGA BIOS to clear framebuffer with minimal
PIO writes. (cs 16242)
This patch fixes the bug with the IDR boot CD.
Signed-off-by: Jean Guyader <jean.guyader@eu.citrix.com>
Teach xc_save to use event-channel-based domain suspend if available.
If the guest provides a suspend event channel through xenstore,
xc_save will use it in preference to the old xenstore-based method.
Xend is still informed when the domain has suspended so that it can
perform device migration in parallel with last-round migration.
Add facility to get notification of domain suspend by event channel.
This event channel will be notified when the domain transitions to the
suspended state, which can be much faster than raising VIRQ_DOM_EXC
and waiting for the notification to be propagated via xenstore.
No attempt is made here to prevent multiple subscribers (last one
wins), or to detect that the subscriber has gone away. Userspace tools
should take care.
ioemu: Support more Capability Structures (including MSI/MSI-X)
and Device Specific Registers for pt device.
I implemented following Capability Structures and Device Specific
Registers.
* Configuration Header Type 0
-> emulation.
"emulation" does not mean no accessing real I/O device.
Access real I/O device, but guest value and real value
might be different.
* MSI Capability Structure
-> emulation.
Behavior is not changed from existed implementation in
pt-msi.c, although code is changed.
* MSI-X Capability Structure
-> emulation.
Behavior is not changed from existed implementation in
pt-msi.c, although code is changed.
* PCI Express Capability Structure
-> emulation.
* PCI Power Management Capability Structure
-> emulation.
* Vital Product Data Capability Structure
-> emulation.
Emulated register is only Next Capability Pointer
Register.
All other registers are passthrough.
* Vendor Specific Capability Structure
-> emulation
Emulated register is only Next Capability Pointer
Register.
All other registers are passthrough.
* Device Specific Register (exclude capability structures)
-> passthrough.
The device drivers in guest domain are allowed to access
Device Specific Register. So various I/O device will work.
I assigned following device to guest domain, and they worked fine.
- PCIe NIC (MSI)
- PCI NIC (MSI)
- UHCI (INTx interrupt)
- IDE Controller (INTx interrupt)
Remove the resetting of the policy from this point in the test case
since the new default policy has the '__UNLABELED__' label, which is
not expected in subsequent checks.
Support building of out-of-tree merged qemu from git
This provides support for building the new merged qemu from
qemu-xen.git, or from a local checkout.
The default is still to use the in-tree version, because the patchman
infrastructure for testing, and propagation from staging to
xen-unstable, needs a small amount of work to cope with git.
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
iommu: Fix hvm_dpci_eoi for smp guest in ioapic interrupt mode
My testing shows, for some smp guests, ent->fields.mask will not be
unmasked when hvm_dpci_eoi() is invoked at the first time. In that
case, we should rely on timeout call back to do pirq_guest_eoi() and
should not stop the per-irq timer too early.
From: Wei Wang <wei.wang2@amd.com> Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
It's not a sensible thing to do, and it is easier than auditing all
state save/restore functions for safety (most importantly, racing
against domain_relinquish_resources).
Also place a spin_barrier on domain_lock after asserting d->is_dying,
allowing critical regions under the domain_lock to safely check
is_dying and avoid races with domain_relinquish_resources().
Provide emulation for all FPU instructions except fsave/frstore &
fnstenv/fldenv.
While the main purpose of the patch is to avoid current and future
"gotchas" on FPU intructions used by various OS boot-loaders, it is
complete enough to run DOS realmode FPU applications and benchmarks,
but don't expect to set any speed records.
Keir Fraser [Mon, 30 Jun 2008 13:19:09 +0000 (14:19 +0100)]
x86_emulate: read/write/insn_fetch emulation hooks now all take a
pointer to emulator data buffer, and an arbitrary byte count (up to
the size of a page of memory).
Keir Fraser [Mon, 30 Jun 2008 09:00:53 +0000 (10:00 +0100)]
blktap: link against libgcrypt rather than libcrypto
tapdisk, part of blktap, links against libcrypto. tapdisk includes
GPLv2 (tapaio.c) and other licensed code (block-qcow.c). The license
of OpenSSL is considered incompatible with the GPL by many
people. This patch changes them to link against libgcrypt, which is
LGPL.
Keir Fraser [Mon, 30 Jun 2008 08:57:27 +0000 (09:57 +0100)]
stubdom: add live migration support by having ioemu just notify the
hypervisor about memory changes.
The impact on disk performance is typically making it from 71.5MBps
down to 70.5Mbps during the live migration. The impact on network
performance is actually even hard to measure.
Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>
Keir Fraser [Fri, 27 Jun 2008 15:16:47 +0000 (16:16 +0100)]
x86: Add cpufreq logic to S3 suspend/resume
When suspend to S3, stop the cpufreq dbs governor. When resume from
S3, firstly sync cpu state and freq at the 1st dbs timer; from 2nd dbs
timer on, cpufreq dbs governor control cpu px transfer according to
its workload algorithm. Px statistic is also handled.
Signed-off-by: Liu Jinsong <jinsong.liu@intel.com>
Keir Fraser [Fri, 27 Jun 2008 13:43:29 +0000 (14:43 +0100)]
hvm rombios: Move function calls out of 'post' function section
Through recent additions to the rombios the code section of the post
function has filled up considerably. When I enable the BX_TCGBIOS
compile time option the BIOS crashes since the post section code
(starts at $e05b) spills over into the nmi entry point (starts at
$e2c3). as86 doesn't cause an error when building.
Keir Fraser [Fri, 27 Jun 2008 13:11:41 +0000 (14:11 +0100)]
vt-d: Minor fixing of interrupt remapping
When ir_ctrl->iremap_index == -1, it means there is no remap
entry. So it needn't to convert from remap format to normal ioapic
format.
Signed-off-by: Weidong Han <weidong.han@intel.com>
Keir Fraser [Fri, 20 Jun 2008 17:02:46 +0000 (18:02 +0100)]
AMD PowerNow! in Xen
This patch set moves support for AMD's PowerNow! technology from
dom0 into the hypervisor, now that there is support for
transferring ACPI data to the hypervisor. It will only work for
AMD processors that support the architectural P-state driver,
such as 3rd generation Opterons, Phenoms, and Turion Ultras.
This patch creates the Architectural P-state driver inside
of the Xen hypervisor and hooks it into the Xen code. It
has been tested at AMD with a variety of para- and fully-
virtualized guests for a week without regressions.
Signed-off-by: Mark Langsdorf <mark.langsdorf@amd.com> Acked-by: Conny Seidel <conny.seidel@amd.com>
Keir Fraser [Thu, 19 Jun 2008 10:09:10 +0000 (11:09 +0100)]
vmx: Clean up and fix guest MSR load/save handling:
1. msr_bitmap/msr_area/msr_host_area must be freed when a vcpu is
destroyed
2. vmx_create_vmcs()/vmx_destroy_vmcs() are only ever called once,
and can hence be simplified slightly
3. Change vmx_*_msr() interfaces to make it crystal clear that they
operate only on current (hence safe against vmwrite() and also
against concurrency races).
4. Change vmx_add_*_msr() implementation to make it crystal clear
that msr_area is not dereferenced before it is allocated.
Only (1) is a bug fix. (2)-(4) are for code clarity.
Keir Fraser [Wed, 18 Jun 2008 10:55:34 +0000 (11:55 +0100)]
ioemu: Fix usbdevice parameter to encode vbd type.
usbdevice = "disk:<filename>"
expect a raw device (as this probably is the most usual case) and
usbdevice = "disk-qcow:<filename>"
expect a COW image (autodetected, probably qcow2).
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Keir Fraser [Wed, 18 Jun 2008 08:40:39 +0000 (09:40 +0100)]
ioemu: generic PCI device config-space emulation
This patch is an extension for qemu-dm to enable emulation of generic
PCI devices. The information for the PCI devices can be passed by
command line parameter.
The command line parameter is "-pciemulation" followed by the
information which contains a label and hex value of the configuration
registers separated by ":".
The configuration registers for each PCI device are below.
vendorid
deviceid
command
status
revision
classcode
headertype
subvendorid
subsystemid
interruputline
interruptpin
Keir Fraser [Wed, 18 Jun 2008 08:39:14 +0000 (09:39 +0100)]
ioemu: Disable format auto-probing in monitor command change
Format auto-probing of writable images is a security hole. The last
known remaining instance is monitor command change. Disable probing
there and use raw. This breaks change for images in all other
formats.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Keir Fraser [Wed, 18 Jun 2008 08:36:47 +0000 (09:36 +0100)]
Add PV-GRUB
This fetches GRUB1 sources, applies the {graphical, print function,
save default, and ext3_256byte} patches from debian, and applies a
patch to make it work on x86_64 and port it to Mini-OS. By using
libxc, PV-GRUB can then "kexec" the loaded kernel from inside the
domain itself, hence permitting to avoid the security-concerned
pygrub.
Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>
projects / xen.git / log