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Signed-off-by: Jan Beulich <jbeulich@suse.com>
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They apparently leave the USB legacy emulation bits set in ICH10's
SMI Control and Enable register, but fail to handle the resulting SMIs
gracefully. The hangs can apparently extend indefinitely, but are
commonly observed to last between a few seconds and a minute.
This assumes that only ICH10-based systems on Intel main boards with
Intel BIOS may be affected. Until Intel comes up with a more precise
identification of affected BIOSes, all Intel ones on Intel boards
will get this workaround applied.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
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Following what Linux did quite a while ago, don't generally disallow
MMCFG base addresses to live above the 4Gb boundary: New systems are
assumed to be fine, and SGI ones are, too.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
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Besides introducing the relevant code paralleling parts of what is
under xen/arch/x86/boot/, this adjusts the build logic so that with a
single compilation two images (gzip-compressed ELF and EFI
application)
can get created. The EFI part of this depends on a new enough compiler
(supposedly gcc 4.4.x and above, but so far only tested to work with
4.5.x) and a properly configured linker (must support the i386pep
emulation). If either functionality is found to not be available, the
EFI part of the build will simply be skipped.
The patch adds all code to allow Xen and the (accordingly enabled)
Dom0 kernel to boot, but doesn't allow Dom0 to make use of EFI
runtime calls (this will be the subject of the next patch).
Parts of the code were lifted from an earlier never published OS
project of ours - whether respective license information needs to be
added to the respective source file is unclear to me (I was told
internally that adding a GPLv2 license header can be done if needed by
the community).
Open issues (not preventing this from being committed imo):
The trampoline allocation and initialization isn't really nice. This
is due to the trampoline needing to be placed at a fixed address, and
hence making the trampoline relocatable would seem desirable here (as
well as for BIOS-based booting, where the trampoline location needed
to be adjusted a number of time already in the past, due to it
colliding with firmware data).
By excluding mem.S, edd.S, and video.S from copied trampoline (i.e.
moving up wakeup.S? and making sure none of the symbols are used from
EFI code), the effective trampoline size could at least be reduced.
Should the mappings of [__XEN_VIRT_START, mbi.mem_upper) and
[_end, __XEN_VIRT_START+BOOTSTRAP_MAP_BASE) be destroyed, despite
non-EFI code also keeping them?
Signed-off-by: Jan Beulich <jbeulich@novell.com>
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Besides being (in my eyes) desirable cleanup, this at once represents
another prerequisite for native EFI booting support.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
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We're building for one case (CONFIG_ACPI_PCI defined) only, yet still
had the other case's code in there. Additionally there was quite a bit
of pseudo-duplication between disabled(!) DMI scan and ACPI boot code.
acpi_pci_disabled had only a single reader, which is off by default
(i.e. must be enable on the command line), so it seems pointless to
keep it.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
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This also includes the removal of some entirely unused functions.
The patch builds upon the makefile adjustments done in the earlier
sent patch titled "move more kernel decompression bits to .init.*
sections".
Signed-off-by: Jan Beulich <jbeulich@novell.com>
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... decreasing cache footprint. As a prerequisite this requires making
cmdline_parse() a little more flexible.
Also remove a few variables altogether, and adjust sections
annotations for several others.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Keir Fraser <keir@xen.org>
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In order for Dom0 to be able to map the DMI table, it must not be in
E820 RAM; since some BIOS versions apparently fail to set the type
correctly for the page(s) containing this table, adjust it before
starting to consume memory.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Keir Fraser <keir@xensource.com>
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Basic infrastructure for Xen S3 support with a common CPU
context save/restore logic for both 32bit and 64bit.
Wakeup code is split into two parts:
- the first locates after trampoline code, to share all the
tricks on the latter, like relocation base and identy mapping
- the 2nd part locates in xen code segment, to do the actual
CPU context restore
Signed-off-by Ke Yu <ke.yu@intel.com>
Signed-off-by Kevin Tian <kevin.tian@intel.com>
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legacy boxes with very non-standard APIC setup.
From: Raj Subrahmanian <raj.subrahmanian@unisys.com>
Signed-off-by: Keir Fraser <keir@xensource.com>
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character-array type. Fix two bad callers.
Signed-off-by: Keir Fraser <keir@xensource.com>
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Retain safe_strcpy(). It can hide the third argument to strlcpy() in
most cases.
Based on patches from Christoph Egger <Christoph.Egger@amd.com>
Signed-off-by: Keir Fraser <keir@xensource.com>
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Signed-off-by: Steven Hand <steven@xensource.com>
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Add support for memory-mapped ns16550 uart.
Signed-off-by: Keir Fraser <keir@xensource.com>
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sched.h:
g/c unneeded include.
Many files:
Rename xen/slab.h to xen/xmalloc.h and fix resulting fallout.
xmalloc.h:
Rename: xen/include/xen/slab.h -> xen/include/xen/xmalloc.h
sched.h, multicall.c, dom_mem_ops.c, asm-offsets.c:
cleanup incorrect includes.
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>
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Many files:
Don't include xen/slab.h and xen/domain.h at the _END_ of xen/sched.h.
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>
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gcc4 build fixes.
Signed-off-by: Keir Fraser <keir@xensource.com>
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Ported genapic to Xen: support for bigsmp and numa platforms such as
es7000.
Signed-off-by: Keir Fraser <keir@xensource.com>
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