Provide extended physial CPU info for the sake of dom0 MCE handling.
This information includes <cpu,core,thread> info for all logical CPUs,
cpuid information from all of them, and initial MSR values for a few
MSRs that are important to MCE handling.
Signed-off-by: Frank van der Linden <Frank.Vanderlinden@Sun.COM>
Don't automatically update ioapic_irq array when allocating vectors.
Only do so when actually allocating IOAPIC irqs. Also move some
IOAPIC specific defines to io_apic.c.
Signed-off-by: Espen Skoglund <espen.skoglund@netronome.com>
- Check for errors when allocating interrupt vectors
- Clean up if interrupt allocation failed
- Make sure that the allocated vector is not reused
Signed-off-by: Espen Skoglund <espen.skoglund@netronome.com>
This includes making the pagetable walker in xc_pagetab.c behave
correctly for 32-bit and 64-bit HVM guests.
Signed-off-by: Tim Deegan <Tim.Deegan@citrix.com>
and replace them with open-coded equivalents. DECLARE_BITMAP is
not exported to user-space consumers of the Xen headers.
Signed-off-by: Tim Deegan <Tim.Deegan@citrix.com>
host pat is set to cover all memory types by Xen, which is
necessary to support guest mtrr/pat, especially when device
is passthroughed with VT-d. However pat on bsp is not=20
recovered which could make assigned device defunct after S3
resume
Signed-off-by Kevin Tian <kevin.tian@intel.com>
on next use.
Apart from teh small performance gain of this, my primary motivation
is to avoid TLB flushes very early in boot, when the system is not yet
properly set up for cross-TLB shootdowns.
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
This makes TLB flushing on page allocation more conservative, but the
flush clock should still save us most of the time (page freeing and
alloc'ing tends to happen in batches, and not necesasrily close
together). We could add some optimisations to the flush filter if this
does turn out to be a significant overhead for some (useful)
workloads.
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
1. Do not touch deferred_ops in invalidate_shadow_ldt(), as we may
not always be in a context where deferred_ops is valid.
2. Protected the shadow LDT with a lock, now that mmu updates are not
protected by the per-domain lock.
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
Since page_list_move_tail(), page_list_splice_init(), and
page_list_is_eol() are only used by relinquish_memory(), and that
function can easily be changed to use more generic accessors, just
eliminate them altogether.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
I've been asked too many times about a hint in xm man page on how to
'detach' from a guest console - aka Ctrl+]
Signed-off-by: Jim Fehlig <jfehlig@novell.com>
While in some places the guest requested flushes were already folded
into the deferred ops, this wasn't done consistently.
Also avoid using an uninitialized variable, even if doing so has no
correctness issue.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Avoid the call to check_freq() by default, since that function may
spin up to 1ms on certain systems without indicating any kind of severe
failure. This matches similar behavior in Linux.
Avoid doing a cross processor call in get_cur_val() if the current CPU
has its bit set in the mask passed in. Also use the local variable
'cpu' consistently, allowing to remove another local variable.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
... in order to make them disappear from the final image. Of course
they could as well be removed altogether, but I assumed that whoever
added them had a reason to do so.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
... by moving as much of the option processing into cpufreq code as is
possible, by folding the cpufreq_governor option into the cpufreq one
(the governor name, if any, must be specified as the first thing after
the separator following "cpufreq=xen"), and by allowing each
governor to have an option processing routine.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
accessible. GRUB2 seems to like to stick them really high sometimes
(just below 4GB).
The 32-bit C code framework that this sets up can also be used for
other stuff in future:
* early cmdline parsing
* relocating multiboot modules so they too are guaranteed accessible
Its interaction with normal Xen start-of-day, and with the 16-bit
assembly trampoline, needs a bit of thought.
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
This patch fixes the following compilation error.
Since struct page_list_head is defined in mm.h, sched.h needs mm.h.
Other circular inclusions are sorted out.
> In file included from xen/include/asm-ia64/linux-xen/asm/smp.h:50,
> from xen/include/linux/smp.h:5,
> from xen/include/asm-ia64/linux/topology.h:33,
> from xen/include/asm-ia64/linux-xen/linux/gfp.h:6,
> from xen/include/asm/mm.h:11,
> from xen/include/xen/mm.h:90,
> from viosapic.c:35:
> xen/include/xen/sched.h:174: error: field page_list has incomplete
> type
> xen/include/xen/sched.h:175: error: field xenpage_list has
> incomplete type
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
1. No reason for i386 not to use the same definitions as x64
2. No need for shadow_page_info names to hang around.
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
This also neatly eliminates (in certain cases) the need to reserve a
page between nodes, as the heap control structures will never be freed
and thus can serve as the needed separator.
It also adds an additonal fallback attempting to make use of the
wasted tail of a (group of) page(s) used for the _heap array by putting the
avail array there if it fits.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
The previous check was flawed in that it checked
- for a single bit to be set instead of a range of bits to be clear
- a machine address against a mask supposed to be used on MFNs.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Keir Fraser