These were mostly ones from xen/arch/x86/boot/cmdline.S which are handled early
and therefore do not use the usual infrastructure and so got missed in the
initial trawl.
The document now contains (AFAICT) every still valid option which was
previously documented at:
http://wiki.xen.org/wiki?title=Xen_Hypervisor_Boot_Options&oldid=1379
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Committed-by: Ian Jackson <ian.jackson.citrix.com>
Since device_tree_for_each_node() is called before printk() works, a
variable is used to switch between using early_printk() and printk().
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Committed-by: Ian Campbell <ian.campbell@citrix.com>
Add a simple dom0_mem command line argument. It's not as flexible as
the x86 equivalent (the 'max' and 'min' prefixes are not supported).
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Committed-by: Ian Campbell <ian.campbell@citrix.com>
Use the /chosen node's bootargs parameter for the Xen command line.
Parse it early on before the serial console is setup.
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Committed-by: Ian Campbell <ian.campbell@citrix.com>
Build a flat device tree for dom0 based on the one supplied to Xen.
The following changes are made:
* In the /chosen node, the xen,dom0-bootargs parameter is renamed to
bootargs.
* In all memory nodes, the reg parameters are adjusted to reflect
the amount of memory dom0 can use. The p2m is updated using this
info.
Support for passing ATAGS to dom0 is removed.
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
[ removed device_tree_dump call -- ijc ]
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Committed-by: Ian Campbell <ian.campbell@citrix.com>
Rather than having the per-VCPU stack contain a pointer to the
per-PCPU state, use the CPU's hypervisor thread ID register for that.
Signed-off-by: Tim Deegan <tim@xen.org>
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
[ s/cpuid/id in set_processor_id -- ijc ]
Committed-by: Ian Campbell <ian.campbell@citrix.com>
This patch adds interrupt support for AMD lightweight profiling. It
registers interrupt handler using alloc_direct_apic_vector(). When
notified, SVM reinjects virtual interrupts into guest VM using
guest's virtual local APIC.
Signed-off-by: Wei Huang <wei.huang2@amd.com>
Signed-off-by: Keir Fraser <keir@xen.org>
Committed-by: Keir Fraser <keir@xen.org>
Regardless of table sharing or processor vendor, these features cannot coexist
since iommu's don't expect gfn->mfn mappings to change, and sharing and paging
depend on trapping all accesses.
Signed-off-by: Andres Lagar-Cavilla <andres@lagarcavilla.org>
Acked-by: Tim Deegan <tim@xen.org>
Committed-by: Tim Deegan <tim@xen.org>
The p2m-pt.c code, used by both shadow and AMD NPT modes, was not aware of
paging types, and the implications those types have on p2m entries. Add support
to the page table-based p2m to understand the paging types. This is a necessary
step towards enabling memory paging on AMD NPT mode, but not yet the full
solution.
Tested not to break neither shadow mode nor "normal" (i.e. no paging) AMD NPT
mode.
Signed-off-by: Andres Lagar-Cavilla <andres@lagarcavilla.org>
Acked-by: Tim Deegan <tim@xen.org>
Committed-by: Tim Deegan <tim@xen.org>
Otherwise, INVALID_MFN tramples over high order bits used for additional flags.
Signed-off-by: Andres Lagar-Cavilla <andres@lagarcavilla.org>
Acked-by: Tim Deegan <tim@xen.org>
Committed-by: Tim Deegan <tim@xen.org>
Also replace some plain numbers by using suitable defines (to make
clear what they are standing for).
Generated code is identical (apart from line number changes and
functions possibly getting ordered differently).
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Keir Fraser <keir@xen.org>
Leaving certain bits set when being started from an environment where
the HPET was already in use can affect functionality. Clear those bits
to be on the safe side.
We should also consider ignoring the HPET altogether if any reserved
bits are found to be set.
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Keir Fraser <keir@xen.org>
... by the call to hpet_disable() added in the immediately preceding
patch.
In order to retain the behavior intended by c/s 23776:0ddb4481f883,
implement one of the alternative options pointed out there: remove CPUs
from the online map in __stop_this_cpu() (and hence doing so in
stop_this_cpu() is no longer needed).
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Keir Fraser <keir@xen.org>
Linux up to now is not smart enough to properly clear the HPET when it
boots, which is particularly a problem when a kdump attempt from
running under Xen is being made. Linux itself added code to work around
this to its shutdown paths quite some time ago, so let's do something
similar in Xen: Save the configuration register settings during boot,
and restore them during shutdown. This should cover the majority of
cases where the secondary kernel might not come up because timer
interrupts don't work.
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Keir Fraser <keir@xen.org>
As part of this I looked through the relevant chapter from interfaces.tex (from
4.1, deleted in unstable) to ensure no critical information was missing.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Keir Fraser <keir@xen.org>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Committed-by: Ian Campbell <ian.campbell@citrix.com>
There's no need for a lock here, elimination of which makes the
function a leaf one, thus allowing for better (and smaller) code.
Further, use the variable next_channel according to its name - so far
it represented the most recently used channel rather than the next one
to use.
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Keir Fraser <keir@xen.org>
This patch implement Xen core parking.
Different core parking sequence has different power/performance
result, due to cpu socket/core/thread topology.
This patch provide power-first and performance-first policies, users
can choose core parking policy by their own demand.
Signed-off-by: Liu, Jinsong <jinsong.liu@intel.com>
Committed-by: Keir Fraser <keir@xen.org>
This patch implement hypercall through which dom0 send core parking
request, and get core parking result.
Due to the characteristic of continue_hypercall_on_cpu, dom0
seperately send/get core parking request/result.
Signed-off-by: Liu, Jinsong <jinsong.liu@intel.com>
Committed-by: Keir Fraser <keir@xen.org>
The operand needs to use the 'w' modifier in case the compiler happens
to pick a register (which apparently it does for no-one but the
reporter of this problem).
Reported-by: Lin Ming <mlin@ss.pku.edu.cn>
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Keir Fraser <keir@xen.org>
Don't adjust the RAM location/size when loading an ELF for dom0. It
was vmlinux specific and no longer needed because Linux can be loaded
from a zImage. Support for loading ELF images is not removed as it
may be useful for loading things other than the Linux kernel.
This also makes preparing the device tree for dom0 easier.
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Committed-by: Ian Campbell <ian.campbell@citrix.com>
Add a device_tree_dump() function which prints to main structure and
properties names of a flat device tree (but not the properties values
yet).
This will be useful for debugging problems with the device tree
generated for dom0.
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Committed-by: Ian Campbell <ian.campbell@citrix.com>
Add device_tree_for_each_node() to iterate over all nodes in a flat
device tree. Use this in device_tree_early_init().
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Committed-by: Ian Campbell <ian.campbell@citrix.com>
When matching node by their name, correctly ignore the unit address
(@...) part of the name. Previously, a "memory-controller" node would
be incorrectly matched as a "memory" node.
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Committed-by: Ian Campbell <ian.campbell@citrix.com>
Move the public libfdt headers to xen/include/xen/libfdt/ so CFLAGS
does need to be set to find them. This requires minor tweaks to one
of the headers imported from upstream.
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Committed-by: Ian Campbell <ian.campbell@citrix.com>
The only hard tabs remaining in xen/arch/arm and xen/include/asm-arm are now
only in .S files and .[ch] imported from Linux
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Committed-by: Ian Campbell <ian.campbell@citrix.com>
Use it to replace x86-specific early_boot boolean variable.
Also use it to detect suspend/resume case during cpu offline/online
to avoid unnecessarily breaking vcpu and cpupool affinities.
Signed-off-by: Keir Fraser <keir@xen.org>
Acked-by: Juergen Gross <juergen.gross@ts.fujitsu.com>
Ian Campbell