23 Apr, 2013
2 commits
-
This patch tries to coalesce tx requests when constructing grant copy
structures. It enables netback to deal with situation when frontend's
MAX_SKB_FRAGS is larger than backend's MAX_SKB_FRAGS.With the help of coalescing, this patch tries to address two regressions
avoid reopening the security hole in XSA-39.Regression 1. The reduction of the number of supported ring entries (slots)
per packet (from 18 to 17). This regression has been around for some time but
remains unnoticed until XSA-39 security fix. This is fixed by coalescing
slots.Regression 2. The XSA-39 security fix turning "too many frags" errors from
just dropping the packet to a fatal error and disabling the VIF. This is fixed
by coalescing slots (handling 18 slots when backend's MAX_SKB_FRAGS is 17)
which rules out false positive (using 18 slots is legit) and dropping packets
using 19 to `max_skb_slots` slots.To avoid reopening security hole in XSA-39, frontend sending packet using more
than max_skb_slots is considered malicious.The behavior of netback for packet is thus:
1-18 slots: valid
19-max_skb_slots slots: drop and respond with an error
max_skb_slots+ slots: fatal errormax_skb_slots is configurable by admin, default value is 20.
Also change variable name from "frags" to "slots" in netbk_count_requests.
Please note that RX path still has dependency on MAX_SKB_FRAGS. This will be
fixed with separate patch.Signed-off-by: Wei Liu
Acked-by: Ian Campbell
Signed-off-by: David S. Miller -
The maximum packet including header that can be handled by netfront / netback
wire format is 65535. Reduce gso_max_size accordingly.Drop skb and print warning when skb->len > 65535. This can 1) save the effort
to send malformed packet to netback, 2) help spotting misconfiguration of
netfront in the future.Signed-off-by: Wei Liu
Acked-by: Ian Campbell
Signed-off-by: David S. Miller
01 Apr, 2013
1 commit
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Pull block fixes from Jens Axboe:
"Alright, this time from 10K up in the air.Collection of fixes that have been queued up since the merge window
opened, hence postponed until later in the cycle. The pull request
contains:- A bunch of fixes for the xen blk front/back driver.
- A round of fixes for the new IBM RamSan driver, fixing various
nasty issues.- Fixes for multiple drives from Wei Yongjun, bad handling of return
values and wrong pointer math.- A fix for loop properly killing partitions when being detached."
* tag 'for-linus-20130331' of git://git.kernel.dk/linux-block: (25 commits)
mg_disk: fix error return code in mg_probe()
rsxx: remove unused variable
rsxx: enable error return of rsxx_eeh_save_issued_dmas()
block: removes dynamic allocation on stack
Block: blk-flush: Fixed indent code style
cciss: fix invalid use of sizeof in cciss_find_cfgtables()
loop: cleanup partitions when detaching loop device
loop: fix error return code in loop_add()
mtip32xx: fix error return code in mtip_pci_probe()
xen-blkfront: remove frame list from blk_shadow
xen-blkfront: pre-allocate pages for requests
xen-blkback: don't store dev_bus_addr
xen-blkfront: switch from llist to list
xen-blkback: fix foreach_grant_safe to handle empty lists
xen-blkfront: replace kmalloc and then memcpy with kmemdup
xen-blkback: fix dispatch_rw_block_io() error path
rsxx: fix missing unlock on error return in rsxx_eeh_remap_dmas()
Adding in EEH support to the IBM FlashSystem 70/80 device driver
block: IBM RamSan 70/80 error message bug fix.
block: IBM RamSan 70/80 branding changes.
...
22 Mar, 2013
2 commits
-
…git/konrad/xen into for-linus
Konrad writes:
[the branch] has a bunch of fixes. They vary from being able to deal
with unknown requests, overflow in statistics, compile warnings, bug in
the error path, removal of unnecessary logic. There is also one
performance fix - which is to allocate pages for requests when the
driver loads - instead of doing it per request -
For MSI-X capable devices the hypervisor wants to write protect the
MSI-X table and PBA, yet it can't assume that resources have been
assigned to their final values at device enumeration time. Thus have
pciback do that notification, as having the device controlled by it is
a prerequisite to assigning the device to guests anyway.This is the kernel part of hypervisor side commit 4245d33 ("x86/MSI:
add mechanism to fully protect MSI-X table from PV guest accesses") on
the master branch of git://xenbits.xen.org/xen.git.CC: stable@vger.kernel.org
Signed-off-by: Jan Beulich
Signed-off-by: Konrad Rzeszutek Wilk
12 Mar, 2013
1 commit
-
If the frontend is using a non-native protocol (e.g., a 64-bit
frontend with a 32-bit backend) and it sent an unrecognized request,
the request was not translated and the response would have the
incorrect ID. This may cause the frontend driver to behave
incorrectly or crash.Since the ID field in the request is always in the same place,
regardless of the request type we can get the correct ID and make a
valid response (which will report BLKIF_RSP_EOPNOTSUPP).This bug affected 64-bit SLES 11 guests when using a 32-bit backend.
This guest does a BLKIF_OP_RESERVED_1 (BLKIF_OP_PACKET in the SLES
source) and would crash in blkif_int() as the ID in the response would
be invalid.Signed-off-by: David Vrabel
Cc: stable@vger.kernel.org
Signed-off-by: Konrad Rzeszutek Wilk
20 Feb, 2013
4 commits
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On ARM we want these to be the same size on 32- and 64-bit.
This is an ABI change on ARM. X86 does not change.
Signed-off-by: Ian Campbell
Cc: Jan Beulich
Cc: Keir (Xen.org)
Cc: Tim Deegan
Cc: Stefano Stabellini
Cc: linux-arm-kernel@lists.infradead.org
Cc: xen-devel@lists.xen.org
Cc: Konrad Rzeszutek Wilk
Signed-off-by: Konrad Rzeszutek Wilk -
This patch implement real Xen ACPI cpu hotplug driver as module.
When loaded, it replaces Xen stub driver.For booting existed cpus, the driver enumerates them.
For hotadded cpus, which added at runtime and notify OS via
device or container event, the driver is invoked to add them,
parsing cpu information, hypercalling to Xen hypervisor to add
them, and finally setting up new /sys interface for them.Signed-off-by: Liu Jinsong
Signed-off-by: Konrad Rzeszutek Wilk -
This patch implements real Xen acpi memory hotplug driver as module.
When loaded, it replaces Xen stub driver.When an acpi memory device hotadd event occurs, it notifies OS and
invokes notification callback, adding related memory device and parsing
memory information, finally hypercall to xen hypervisor to add memory.Signed-off-by: Liu Jinsong
Signed-off-by: Konrad Rzeszutek Wilk -
Allows for more fine grained error reporting. Only used by PVH and
ARM both of which are marked EXPERIMENTAL precisely because the ABI
is not yet stableSigned-off-by: Ian Campbell
[v1: Rebased without PVH patches]
Signed-off-by: Konrad Rzeszutek Wilk
18 Dec, 2012
1 commit
-
Signed-off-by: Wei Liu
Signed-off-by: Konrad Rzeszutek Wilk
01 Dec, 2012
1 commit
-
…to stable/for-linus-3.8
* 'arm-privcmd-for-3.8' of git://xenbits.xen.org/people/ianc/linux:
xen: arm: implement remap interfaces needed for privcmd mappings.
xen: correctly use xen_pfn_t in remap_domain_mfn_range.
xen: arm: enable balloon driver
xen: balloon: allow PVMMU interfaces to be compiled out
xen: privcmd: support autotranslated physmap guests.
xen: add pages parameter to xen_remap_domain_mfn_rangeSigned-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
29 Nov, 2012
2 commits
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We use XENMEM_add_to_physmap_range which is the preferred interface
for foreign mappings.Acked-by: Mukesh Rathor
Acked-by: Stefano Stabellini
Signed-off-by: Ian Campbell
Signed-off-by: Konrad Rzeszutek Wilk -
As on ia64 builds we get:
include/xen/interface/version.h: In function 'xen_running_on_version_or_later':
include/xen/interface/version.h:76: error: implicit declaration of function 'HYPERVISOR_xen_version'We can later on make this function exportable if there are
modules using part of it. For right now the only two users are
built-in.Signed-off-by: Konrad Rzeszutek Wilk
27 Nov, 2012
2 commits
-
Commit 92e3229dcdc80ff0b6304f14c578d76e7e10e226
("xen/acpi: ACPI PAD driver") adds a new function but forgets to
use the right header. Without it, we get:In file included from drivers/xen/features.c:15:0:
include/xen/interface/version.h: In function ‘xen_running_on_version_or_later’:
include/xen/interface/version.h:72:2: error: implicit declaration of function ‘xen_domain’ [-Werror=implicit-function-declaration]Signed-off-by: Konrad Rzeszutek Wilk
-
PAD is acpi Processor Aggregator Device which provides a control point
that enables the platform to perform specific processor configuration
and control that applies to all processors in the platform.This patch is to implement Xen acpi pad logic. When running under Xen
virt platform, native pad driver would not work. Instead Xen pad driver,
a self-contained and thin logic level, would take over acpi pad logic.When acpi pad notify OSPM, xen pad logic intercept and parse _PUR object
to get the expected idle cpu number, and then hypercall to hypervisor.
Xen hypervisor would then do the rest work, say, core parking, to idle
specific number of cpus on its own policy.Signed-off-by: Jan Beulich
Signed-off-by: Liu Jinsong
Signed-off-by: Konrad Rzeszutek Wilk
20 Oct, 2012
3 commits
-
* commit 'v3.7-rc1': (10892 commits)
Linux 3.7-rc1
x86, boot: Explicitly include autoconf.h for hostprogs
perf: Fix UAPI fallout
ARM: config: make sure that platforms are ordered by option string
ARM: config: sort select statements alphanumerically
UAPI: (Scripted) Disintegrate include/linux/byteorder
UAPI: (Scripted) Disintegrate include/linux
UAPI: Unexport linux/blk_types.h
UAPI: Unexport part of linux/ppp-comp.h
perf: Handle new rbtree implementation
procfs: don't need a PATH_MAX allocation to hold a string representation of an int
vfs: embed struct filename inside of names_cache allocation if possible
audit: make audit_inode take struct filename
vfs: make path_openat take a struct filename pointer
vfs: turn do_path_lookup into wrapper around struct filename variant
audit: allow audit code to satisfy getname requests from its names_list
vfs: define struct filename and have getname() return it
btrfs: Fix compilation with user namespace support enabled
userns: Fix posix_acl_file_xattr_userns gid conversion
userns: Properly print bluetooth socket uids
... -
This correctly sizes it as 64 bit on ARM but leaves it as unsigned
long on x86 (therefore no intended change on x86).The long and ulong guest handles are now unused (and a bit dangerous)
so remove them.Acked-by: Stefano Stabellini
Signed-off-by: Ian Campbell
Signed-off-by: Konrad Rzeszutek Wilk -
Signed-off-by: Ian Campbell
Signed-off-by: Konrad Rzeszutek Wilk
12 Oct, 2012
1 commit
-
Pull Xen fixes from Konrad Rzeszutek Wilk:
"This has four bug-fixes and one tiny feature that I forgot to put
initially in my tree due to oversight.The feature is for kdump kernels to speed up the /proc/vmcore reading.
There is a ram_is_pfn helper function that the different platforms can
register for. We are now doing that.The bug-fixes cover some embarrassing struct pv_cpu_ops variables
being set to NULL on Xen (but not baremetal). We had a similar issue
in the past with {write|read}_msr_safe and this fills the three
missing ones. The other bug-fix is to make the console output (hvc)
be capable of dealing with misbehaving backends and not fall flat on
its face. Lastly, a quirk for older XenBus implementations that came
with an ancient v3.4 hypervisor (so RHEL5 based) - reading of certain
non-existent attributes just hangs the guest during bootup - so we
take precaution of not doing that on such older installations.Feature:
- Register a pfn_is_ram helper to speed up reading of /proc/vmcore.
Bug-fixes:
- Three pvops call for Xen were undefined causing BUG_ONs.
- Add a quirk so that the shutdown watches (used by kdump) are not
used with older Xen (3.4).
- Fix ungraceful state transition for the HVC console."* tag 'stable/for-linus-3.7-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
xen/pv-on-hvm kexec: add quirk for Xen 3.4 and shutdown watches.
xen/bootup: allow {read|write}_cr8 pvops call.
xen/bootup: allow read_tscp call for Xen PV guests.
xen pv-on-hvm: add pfn_is_ram helper for kdump
xen/hvc: handle backend CLOSED without CLOSING
07 Oct, 2012
1 commit
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Pull ADM Xen support from Konrad Rzeszutek Wilk:
Features:
* Allow a Linux guest to boot as initial domain and as normal guests
on Xen on ARM (specifically ARMv7 with virtualized extensions). PV
console, block and network frontend/backends are working.
Bug-fixes:
* Fix compile linux-next fallout.
* Fix PVHVM bootup crashing.The Xen-unstable hypervisor (so will be 4.3 in a ~6 months), supports
ARMv7 platforms.The goal in implementing this architecture is to exploit the hardware
as much as possible. That means use as little as possible of PV
operations (so no PV MMU) - and use existing PV drivers for I/Os
(network, block, console, etc). This is similar to how PVHVM guests
operate in X86 platform nowadays - except that on ARM there is no need
for QEMU. The end result is that we share a lot of the generic Xen
drivers and infrastructure.Details on how to compile/boot/etc are available at this Wiki:
http://wiki.xen.org/wiki/Xen_ARMv7_with_Virtualization_Extensions
and this blog has links to a technical discussion/presentations on the
overall architecture:http://blog.xen.org/index.php/2012/09/21/xensummit-sessions-new-pvh-virtualisation-mode-for-arm-cortex-a15arm-servers-and-x86/
* tag 'stable/for-linus-3.7-arm-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen: (21 commits)
xen/xen_initial_domain: check that xen_start_info is initialized
xen: mark xen_init_IRQ __init
xen/Makefile: fix dom-y build
arm: introduce a DTS for Xen unprivileged virtual machines
MAINTAINERS: add myself as Xen ARM maintainer
xen/arm: compile netback
xen/arm: compile blkfront and blkback
xen/arm: implement alloc/free_xenballooned_pages with alloc_pages/kfree
xen/arm: receive Xen events on ARM
xen/arm: initialize grant_table on ARM
xen/arm: get privilege status
xen/arm: introduce CONFIG_XEN on ARM
xen: do not compile manage, balloon, pci, acpi, pcpu and cpu_hotplug on ARM
xen/arm: Introduce xen_ulong_t for unsigned long
xen/arm: Xen detection and shared_info page mapping
docs: Xen ARM DT bindings
xen/arm: empty implementation of grant_table arch specific functions
xen/arm: sync_bitops
xen/arm: page.h definitions
xen/arm: hypercalls
...
04 Oct, 2012
2 commits
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Register pfn_is_ram helper speed up reading /proc/vmcore in the kdump
kernel. See commit message of 997c136f518c ("fs/proc/vmcore.c: add hook
to read_from_oldmem() to check for non-ram pages") for details.It makes use of a new hvmop HVMOP_get_mem_type which was introduced in
xen 4.2 (23298:26413986e6e0) and backported to 4.1.1.The new function is currently only enabled for reading /proc/vmcore.
Later it will be used also for the kexec kernel. Since that requires
more changes in the generic kernel make it static for the time being.Signed-off-by: Olaf Hering
Signed-off-by: Konrad Rzeszutek Wilk -
Pull preparatory patches for user API disintegration from David Howells:
"The patches herein prepare for the extraction of the Userspace API
bits from the various header files named in the Kbuild files.New subdirectories are created under either include/uapi/ or
arch/x/include/uapi/ that correspond to the subdirectory containing
that file under include/ or arch/x/include/.The new subdirs under the uapi/ directory are populated with Kbuild
files that mostly do nothing at this time. Further patches will
disintegrate the headers in each original directory and fill in the
Kbuild files as they do it.These patches also:
(1) fix up #inclusions of "foo.h" rather than .
(2) Remove some redundant #includes from the DRM code.
(3) Make the kernel build infrastructure handle Kbuild files both in
the old places and the new UAPI place that both specify headers
to be exported.(4) Fix some kernel tools that #include kernel headers during their
build.I have compile tested this with allyesconfig against x86_64,
allmodconfig against i386 and a scattering of additional defconfigs of
other arches. Prepared for main scriptSigned-off-by: David Howells
Acked-by: Arnd Bergmann
Acked-by: Thomas Gleixner
Acked-by: Michael Kerrisk
Acked-by: Paul E. McKenney
Acked-by: Dave Jones
Acked-by: H. Peter Anvin "* tag 'uapi-prep-20121002' of git://git.infradead.org/users/dhowells/linux-headers:
UAPI: Plumb the UAPI Kbuilds into the user header installation and checking
UAPI: x86: Differentiate the generated UAPI and internal headers
UAPI: Remove the objhdr-y export list
UAPI: Move linux/version.h
UAPI: Set up uapi/asm/Kbuild.asm
UAPI: x86: Fix insn_sanity build failure after UAPI split
UAPI: x86: Fix the test_get_len tool
UAPI: (Scripted) Set up UAPI Kbuild files
UAPI: Partition the header include path sets and add uapi/ header directories
UAPI: (Scripted) Convert #include "..." to #include in kernel system headers
UAPI: (Scripted) Convert #include "..." to #include in drivers/gpu/
UAPI: (Scripted) Remove redundant DRM UAPI header #inclusions from drivers/gpu/.
UAPI: Refer to the DRM UAPI headers with and from certain headers only
03 Oct, 2012
2 commits
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Pull Xen update from Konrad Rzeszutek Wilk:
"Features:
- When hotplugging PCI devices in a PV guest we can allocate
Xen-SWIOTLB later.
- Cleanup Xen SWIOTLB.
- Support pages out grants from HVM domains in the backends.
- Support wild cards in xen-pciback.hide=(BDF) arguments.
- Update grant status updates with upstream hypervisor.
- Boot PV guests with more than 128GB.
- Cleanup Xen MMU code/add comments.
- Obtain XENVERS using a preferred method.
- Lay out generic changes to support Xen ARM.
- Allow privcmd ioctl for HVM (used to do only PV).
- Do v2 of mmap_batch for privcmd ioctls.
- If hypervisor saves the LED keyboard light - we will now instruct
the kernel about its state.
Fixes:
- More fixes to Xen PCI backend for various calls/FLR/etc.
- With more than 4GB in a 64-bit PV guest disable native SWIOTLB.
- Fix up smatch warnings.
- Fix up various return values in privmcmd and mm."* tag 'stable/for-linus-3.7-x86-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen: (48 commits)
xen/pciback: Restore the PCI config space after an FLR.
xen-pciback: properly clean up after calling pcistub_device_find()
xen/vga: add the xen EFI video mode support
xen/x86: retrieve keyboard shift status flags from hypervisor.
xen/gndev: Xen backend support for paged out grant targets V4.
xen-pciback: support wild cards in slot specifications
xen/swiotlb: Fix compile warnings when using plain integer instead of NULL pointer.
xen/swiotlb: Remove functions not needed anymore.
xen/pcifront: Use Xen-SWIOTLB when initting if required.
xen/swiotlb: For early initialization, return zero on success.
xen/swiotlb: Use the swiotlb_late_init_with_tbl to init Xen-SWIOTLB late when PV PCI is used.
xen/swiotlb: Move the error strings to its own function.
xen/swiotlb: Move the nr_tbl determination in its own function.
xen/arm: compile and run xenbus
xen: resynchronise grant table status codes with upstream
xen/privcmd: return -EFAULT on error
xen/privcmd: Fix mmap batch ioctl error status copy back.
xen/privcmd: add PRIVCMD_MMAPBATCH_V2 ioctl
xen/mm: return more precise error from xen_remap_domain_range()
xen/mmu: If the revector fails, don't attempt to revector anything else.
... -
Convert #include "..." to #include in kernel system headers.
Signed-off-by: David Howells
Acked-by: Arnd Bergmann
Acked-by: Thomas Gleixner
Acked-by: Paul E. McKenney
Acked-by: Dave Jones
27 Sep, 2012
1 commit
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…x-pvhvm into stable/for-linus-3.7
* 'xenarm-for-linus' of git://xenbits.xen.org/people/sstabellini/linux-pvhvm:
arm: introduce a DTS for Xen unprivileged virtual machines
MAINTAINERS: add myself as Xen ARM maintainer
xen/arm: compile netback
xen/arm: compile blkfront and blkback
xen/arm: implement alloc/free_xenballooned_pages with alloc_pages/kfree
xen/arm: receive Xen events on ARM
xen/arm: initialize grant_table on ARM
xen/arm: get privilege status
xen/arm: introduce CONFIG_XEN on ARM
xen: do not compile manage, balloon, pci, acpi, pcpu and cpu_hotplug on ARM
xen/arm: Introduce xen_ulong_t for unsigned long
xen/arm: Xen detection and shared_info page mapping
docs: Xen ARM DT bindings
xen/arm: empty implementation of grant_table arch specific functions
xen/arm: sync_bitops
xen/arm: page.h definitions
xen/arm: hypercalls
arm: initial Xen supportSigned-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
24 Sep, 2012
2 commits
-
In order to add xen EFI frambebuffer video support, it is required to add
xen-efi's new video type (XEN_VGATYPE_EFI_LFB) case and handle it in the
function xen_init_vga and set the video type to VIDEO_TYPE_EFI to enable
efi video mode.The original patch from which this was broken out from:
http://marc.info/?i=4E099AA6020000780004A4C6@nat28.tlf.novell.comSigned-off-by: Jan Beulich
Signed-off-by: Tang Liang
[v2: The original author is Jan Beulich and Liang Tang ported it to upstream]
Signed-off-by: Konrad Rzeszutek Wilk -
The xen c/s 25873 allows the hypervisor to retrieve the NUMLOCK flag.
With this patch, the Linux kernel can get the state according to the
data in the BIOS.Acked-by: Jan Beulich
Signed-off-by: Konrad Rzeszutek Wilk
19 Sep, 2012
1 commit
-
Just like for the in-tree early console debug port driver, the
hypervisor - when using a debug port based console - also needs to be
told about controller resets, so it can suppress using and then
re-initialize the debug port accordingly.Other than the in-tree driver, the hypervisor driver actually cares
about doing this only for the device where the debug is port actually
in use, i.e. it needs to be told the coordinates of the device being
reset (quite obviously, leveraging the addition done for that would
likely benefit the in-tree driver too).Signed-off-by: Jan Beulich
Acked-by: Konrad Rzeszutek Wilk
Acked-by: Alan Stern
Signed-off-by: Greg Kroah-Hartman
14 Sep, 2012
2 commits
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Adds GNTST_address_too_big and GNTST_eagain.
Signed-off-by: Ian Campbell
Signed-off-by: Konrad Rzeszutek Wilk -
All the original Xen headers have xen_ulong_t as unsigned long type, however
when they have been imported in Linux, xen_ulong_t has been replaced with
unsigned long. That might work for x86 and ia64 but it does not for arm.
Bring back xen_ulong_t and let each architecture define xen_ulong_t as they
see fit.Also explicitly size pointers (__DEFINE_GUEST_HANDLE) to 64 bit.
Changes in v3:
- remove the incorrect changes to multicall_entry;
- remove the change to apic_physbase.Signed-off-by: Stefano Stabellini
Acked-by: Konrad Rzeszutek Wilk
12 Sep, 2012
1 commit
-
…/tip into stable/for-linus-3.7
* 'x86/platform' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (9690 commits)
x86: Document x86_init.paging.pagetable_init()
x86: xen: Cleanup and remove x86_init.paging.pagetable_setup_done()
x86: Move paging_init() call to x86_init.paging.pagetable_init()
x86: Rename pagetable_setup_start() to pagetable_init()
x86: Remove base argument from x86_init.paging.pagetable_setup_start
Linux 3.6-rc5
HID: tpkbd: work even if the new Lenovo Keyboard driver is not configured
Remove user-triggerable BUG from mpol_to_str
xen/pciback: Fix proper FLR steps.
uml: fix compile error in deliver_alarm()
dj: memory scribble in logi_dj
Fix order of arguments to compat_put_time[spec|val]
xen: Use correct masking in xen_swiotlb_alloc_coherent.
xen: fix logical error in tlb flushing
xen/p2m: Fix one-off error in checking the P2M tree directory.
powerpc: Don't use __put_user() in patch_instruction
powerpc: Make sure IPI handlers see data written by IPI senders
powerpc: Restore correct DSCR in context switch
powerpc: Fix DSCR inheritance in copy_thread()
powerpc: Keep thread.dscr and thread.dscr_inherit in sync
...
23 Aug, 2012
2 commits
-
All the original Xen headers have xen_pfn_t as mfn and pfn type, however
when they have been imported in Linux, xen_pfn_t has been replaced with
unsigned long. That might work for x86 and ia64 but it does not for arm.
Bring back xen_pfn_t and let each architecture define xen_pfn_t as they
see fit.Signed-off-by: Stefano Stabellini
Acked-by: Konrad Rzeszutek Wilk
Signed-off-by: Konrad Rzeszutek Wilk -
This hypercall has been present since Xen 3.1, and is the preferred
method for a domain to obtain its UUID. Fall back to the xenstore method
if using an older version of Xen (which returns -ENOSYS).Signed-off-by: Daniel De Graaf
Signed-off-by: Konrad Rzeszutek Wilk
22 Aug, 2012
2 commits
-
Changes in v2:
- remove pvclock hack;
- remove include linux/types.h from xen/interface/xen.h.
v3:
- Compile under IA64
Signed-off-by: Stefano Stabellini
Signed-off-by: Konrad Rzeszutek Wilk -
Update struct xen_add_to_physmap to be in sync with Xen's version of the
structure.
The size field was introduced by:changeset: 24164:707d27fe03e7
user: Jean Guyader
date: Fri Nov 18 13:42:08 2011 +0000
summary: mm: New XENMEM space, XENMAPSPACE_gmfn_rangeAccording to the comment:
"This new field .size is located in the 16 bits padding between .domid
and .space in struct xen_add_to_physmap to stay compatible with older
versions."Changes in v2:
- remove erroneous comment in the commit message.
Signed-off-by: Stefano Stabellini
Signed-off-by: Konrad Rzeszutek Wilk
09 Aug, 2012
2 commits
-
Signed-off-by: Stefano Stabellini
Acked-by: Konrad Rzeszutek Wilk -
Use Xen features to figure out if we are privileged.
XENFEAT_dom0 was introduced by 23735 in xen-unstable.hg.
Signed-off-by: Stefano Stabellini
Acked-by: Konrad Rzeszutek Wilk
20 Jul, 2012
2 commits
-
Add xs_reset_watches function to shutdown watches from old kernel after
kexec boot. The old kernel does not unregister all watches in the
shutdown path. They are still active, the double registration can not
be detected by the new kernel. When the watches fire, unexpected events
will arrive and the xenwatch thread will crash (jumps to NULL). An
orderly reboot of a hvm guest will destroy the entire guest with all its
resources (including the watches) before it is rebuilt from scratch, so
the missing unregister is not an issue in that case.With this change the xenstored is instructed to wipe all active watches
for the guest. However, a patch for xenstored is required so that it
accepts the XS_RESET_WATCHES request from a client (see changeset
23839:42a45baf037d in xen-unstable.hg). Without the patch for xenstored
the registration of watches will fail and some features of a PVonHVM
guest are not available. The guest is still able to boot, but repeated
kexec boots will fail.Signed-off-by: Olaf Hering
Signed-off-by: Konrad Rzeszutek Wilk -
This patch provide Xen physical cpus online/offline sys interface.
User can use it for their own purpose, like power saving:
by offlining some cpus when light workload it save power greatly.Its basic workflow is, user online/offline cpu via sys interface,
then hypercall xen to implement, after done xen inject virq back to dom0,
and then dom0 sync cpu status.Signed-off-by: Jiang, Yunhong
Signed-off-by: Liu, Jinsong
Signed-off-by: Konrad Rzeszutek Wilk