The (Dom0 only for now) kernel can indicate that it doesn't need its
initrd mapped through a newly added ELF note - it gets passed the PFN
of the initrd in this case instead of the virtual address.
Even for kernels not making use of the new feature, the initrd will
no longer get copied into the initial mapping, but the memory it lives
in will get assigned to and mapped for the guest instead.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
By doing so, we're no longer restricted to be able to place all boot
loader modules into the low 1Gb/4Gb (32-/64-bit) of memory, nor is
there a dependency anymore on where the boot loader places the
modules.
We're also no longer restricted to copy the modules into a place below
4Gb, nor to put them all together into a single piece of memory.
Further it allows even the 32-bit Dom0 kernel to be loaded anywhere in
physical memory (except if it doesn't support PAE-above-4G).
Signed-off-by: Jan Beulich <jbeulich@novell.com>
The implementation of xl was lacking a lot of consts on its char*s.
In this patch we improve matters. It doesn't fix everything. In
particular:
* I only changed char*s and not other structs that ought to be const.
* libxl_send_debug_keys should take a const char* but the pointer
ends up getting sent to DECLARE_HYPERCALL_BOUNCE from xc_private.h
and that won't take a const char*. I wasn't sure what to do so
I have left it.
* There is a great deal of in-place string tokenisation (both
ad-hoc, and using strtok_r). I haven't changed any of that.
* I haven't changed any of the occurrences of char **argv because of
the castless assignment incompatibility between const char** and
char **.
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Attempting to define or create a domain whose XML config contains a
passthru PCI device fails with libvirt
xen84: # cat win2k8r2.xml
...
<hostdev mode='subsystem' type='pci' managed='no'>
<source>
<address domain='0x0000' bus='0x01' slot='0x00' function='0x0'/>
</source>
</hostdev>
...
xen84: # virsh create ./win2k8r2.xml
error: Failed to create domain from ./win2k8r2.xml
error: POST operation failed: xend_post: error from xen daemon:
(xend.err "Error creating domain: 'key'")
The PCI device config maintained by xend includes a 'key' field, which is
initialized by xm client when using that tool and traditional xen config
file. libvirt, which uses xend's sexpr-over-http interface (is that the
proper name for that interface??), does not initialize this field - and
shouldn't be expected to do so IMO. Clients should not be bothered with
xend's internal representation of a PCI device.
This patch populates the 'key' field within xend if it is uninitialized,
similar to current initialization of 'uuid' field. The 'vdevfn' field
suffers a similar problem if not (optionally) specified by user.
AFAICT, the xm client initializes 'vdevfn' to 0x100 if not specified so
I've done the same here.
Signed-off-by: Jim Fehlig <jfehlig@novell.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
I have tested the patch in the following senarios:
1> Non-xsave platform
2> Xsave-capable platform, guest does not support xsave, xen support xsave
3> Xsave-capable platform, guest does support xsave, xen supports xsave
4> Guest (non-xsave) saved on platform without xsave, restored on a
Xsave-capable system.
All passed.
Signed-off-by: Shan Haitao <haitao.shan@intel.com>
Signed-off-by: Han Weidong <weidong.han@intel.com>
Unfortunately it turned out the original Linux code had more issues:
We want to place the region above 4G in any case (even if TOM2 isn't
enabled or invalid), and the base mask definition was improperly typed
(thus causing shifts by FAM10H_MMIO_CONF_BASE_SHIFT to produce other
than the intended result). Fixing this in turn allowed simplifying the
MMIO region detection code, as regions ending below TOM2 now aren't of
interest anymore.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Rather than annotating each and every function and data object (and
then still missing some compiler generated ones, plus getting into
ugliness due to the code also being built from tools/libxc/), use
objcopy to rename all relevant sections.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Arrange for (almost) no code to be generated for x86-32, where the
functionality is disabled anyway. Properly __init-annotate the code.
Remove some pointless bits.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Code for this has been in Linux since 2.6.26, and since Xen itself
wants to use the MMCONFIG access method when possible, clone it
(fixing some rather obvious bugs in that code at once).
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Cleanup whitespace which was introduced in patch that added
__get_paged_frame.
Convert tabs to spaces to follow the coding style in this file.
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Correction/Extension of changeset 22000:4fc66044477d
"Values of cpu_weight and cpu_cap are lost after xend restart"
Values of cpu_weight and cpu_cap taken from managed SXP file have to
be converted from str to int.
Signed-off-by: Lutz Dube <lutz.dube@ts.fujitsu.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
We should bounce the buffers themselves, not the pointers to them!
Error introduced by 22292:a1b39d2b9001 and reported by Yang Z Zhang.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
This patch fixes compilation errors by 22275:e95dc0eb152d:
ia64/xc_ia64_linux_save.c:797: error: too few arguments to function 'callbacks->switch_qemu_logdirty'
and applies 22285:36a317494429 to ia64.
Signed-off-by: KUWAMURA Shin'ya <kuwa@jp.fujitsu.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Cpumap types in tools (libxc and libxl) are changed to be based on bytes like
in the interface to the hypervisor.
To make handling easier the size of used cpumaps is always based on the
number of physical cpus supported by the hypervisor. This eliminates the need
to keep track of the cpumap size in external interfaces.
In libxl a macro for cycling through a cpumap is added (libxl_for_each_cpu).
Interfaces changed:
libxl_set_vcpuaffinity()
libxl_cpumap_alloc()
xc_vcpu_setaffinity()
xc_vcpu_getaffinity()
xc_cpupool_freeinfo()
Signed-off-by: Juergen Gross <juergen.gross@ts.fujitsu.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Not checking leads to warn_unused_result checks triggering in some
libraries and compilers. Combined with -Werror this breaks the build.
Signed-off-by: Gianni Tedesco <gianni.tedesco@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
If the device at <secbus>:00.0 is the device the mapping operation was
initiated for, trying to map it a second time will fail, and hence
this second mapping attempt must be prevented (as was done prior to
said c/s).
While at it, simplify the code a little, too.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Acked-by: Weidong Han <weidong.han@intel.com>
22066:eccfdeb41b80 replaced tools/libxc/ia64/aclinux.h with
xen/include/acpi/platform/aclinux.h.
Because both are incompatible, tools cannot be built on ia64.
This patch fixes compilation errors by defining identifiers at
ac_ia64_tools.h.
Signed-off-by: KUWAMURA Shin'ya <kuwa@jp.fujitsu.com>
Primarily fix up register names in public header file for
compatibility with old unmodified versions of virtual firmware and
qemu-dm. Also fixes a bug in the read case of handle_evt_io().
Signed-off-by: Keir Fraser <keir@xen.org>
There's no need for a loop here: if the value to be compared against
and the value to be stored are equal, cmpxchg{,8b} act just like a
load anyway.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
By default, Xen will handle the old ACPI IO port. But it can switch to
the new one by setting the HVM_PARAM_ACPI_IOPORTS_LOCATION to 1.
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Signed-off-by: Keir Fraser <keir@xen.org>
The new TSC Deadline Timer offers system software a low overhead
per-logical-thread deadline timer in TSC units.
The timer is implemented via a new architectural 64-bit register,
IA32_TSC_DEADLINE_MSR. Reads and writes of this MSR occur in program
order, but are non-serializing.
The support for this feature is indicated by
CPUID.01H:ECX.TSC_Deadline[bit 24] =3D 1 as documented in the Intel
Architecture Software Developer's Manual.
The LOCAL APIC on new processors has a mode where its underlying
hardware timer can now be accessed via the non-serializing
IA32_TSC_DEADLINE_MSR in TSC tick units.
If this mode is present, prefer it over the traditional LAPIC timer
mode. KERN_DEBUG dmesg will print "TSC deadline timer enabled" when
TDT is used.
Bootparam "tdt=off" is available to revert to LAPIC timer mode.
This patch is based on original work by Len Brown for Linux kernel.
cc: Len Brown <len.brown@intel.com>
Signed-off-by: Wei Gang <gang.wei@intel.com>
Signed-off-by: Keir Fraser <keir@xen.org>
Consolidate VT-d quirks into a single file - quirks.c. This includes
quirks to workaround OEM BIOS issue with VT-d enabling in IGD, Cantiga
VT-d buffer flush issue, Cantiga IGD Vt-d low power related errata,
and a quirk to workaround issues related to wifi direct assignment.
Signed-off-by: Allen Kay <allen.m.kay@intel.com>
Reviewed-by: Jan Beulich <JBeulich@novell.com>
* Add traces for credit reset and scheduling a tasklet
* Remove tsc for traces which probably don't need them
* Print domain info in the debug dump
Signed-off-by: George Dunlap <george.dunlap@eu.citrix.com>
The previous code had a bug where, if a second vcpu woke up and ran
runq_tickle before the first vcpu had actually started running on a
tickled processor, the code would choose the same cpu to tickle, and
the result would be a "missed tickle" -- only one of the vcpus would
run, despite having idle processors.
This change:
* Keeps a mask of idle cpus
* Keeps a mask of cpus which have been tickled, but not entered
schedule yet.
The new tickle code first looks at the set of idle-but-not-tickled
cpus; if it's not empty, it tickles one.
If that doesn't work, it looks at the set of not-idle-but-not-tickled
cpus, finds the one with the lowest credit; if that's lower than the
waking vcpu, it tickles that one.
If any cpu is tickled, its bit in the tickled mask is set, and cleared
when schedule() is called.
Signed-off-by: George Dunlap <george.dunlap@eu.citrix.com>
Sometimes we would rather connect to an HVM's serial console than it's
VGA display. In this case we cannot see or interact with the ethernet
booting process. This is a bit annoying so let's just enable it.
Signed-off-by: Gianni Tedesco <gianni.tedesco@citrix.com>
Keir Fraser
Anthony Perard
Ian Jackson
Jim Fehlig
Lutz Dube
Ian Campbell
KUWAMURA Shin'ya
Juergen Gross
Gianni Tedesco