Linux 3.2 was released on Jan 4th and this release saw a lot of
interesting work.
For the full credit list, please see the bottom of the email.
We did not have any new drivers in this release, but we did have some
awesome goodness:
- Remove the XEN_PLATFORM_PCI config option. We need it 99% of time
and not having it enabled caused tons of headaches. Squashing it in
fixed a lot of distro bugs were the xen-platform-pci.ko module was not
present in the installer.
- Rework the E820 parser. It also for proper accounting of memory in
the "low" (so below 4GB) and "high" (>4GB) memory that
can be used for
ballooning. In other words, what you see in ''xm list'' vs
''xl list'' is more
truthfull.
- Support "big-iron" machines with PCI segments (another layer in
case you
run out of PCI buses, so more than 256 devices).
- PVonHVM kexec support. It all worked until we found out that under Amazon
EC2 (and Xen 3.4.x) it would lock up the guest so had to revert the new
functionality . Will revisit this for 3.4 with a
''feature-XX'' flag.
- MMU improvements by not using the ''vmalloc_sync_all'' slow
call but being
more selective.
- Initial work to make HVM domains be capable of being device drivers or
even host the XenBus daemon.
- Initial work laid out for netback page-flipping (also called zero-copying).
- Block can pass in discard (TRIM/UNMAP) requests to the backends.
- Block can support the old-style ''feature-barrier'' that was
removed in 2.6.36 kernels.
- Tons of cleanup to make the code easier to read.
- Security fixes in the gnt/gnt_alloc ioctl calls.
- Work with more than 32 VCPUs.
- Tons of bug-fixes in various layers. The most critical were back-ported to
the stable kernels.
Dan Carpenter (4):
xen/pciback: double lock typo
xen-gntdev: integer overflow in gntdev_alloc_map()
xen-gntalloc: integer overflow in gntalloc_ioctl_alloc()
xen-gntalloc: signedness bug in add_grefs()
Dan Magenheimer (1):
xen: Fix selfballooning and ensure it doesn''t go too far
Daniel De Graaf (5):
xenbus: Fix loopback event channel assuming domain 0
xenbus: don''t rely on xen_initial_domain to detect local xenstore
xen/gntdev: Fix sleep-inside-spinlock
xen: Remove hanging references to CONFIG_XEN_PLATFORM_PCI
xen/balloon: Avoid OOM when requesting highmem
David Vrabel (9):
xen/balloon: account for pages released during memory setup
xen/balloon: simplify test for the end of usable RAM
xen: allow balloon driver to use more than one memory region
xen: allow extra memory to be in multiple regions
xen: release all pages within 1-1 p2m mappings
xen: use generic functions instead of xen_{alloc, free}_vm_area()
block: xen-blkback: use API provided by xenbus module to map rings
net: xen-netback: use API provided by xenbus module to map rings
xen: map foreign pages for shared rings by updating the PTEs directly
Ian Campbell (12):
atm: convert to SKB paged frag API.
IB: amso1100: convert to SKB paged frag API.
IB: nes: convert to SKB paged frag API.
IPoIB: convert to SKB paged frag API.
tg3: convert to SKB paged frag API.
bnx2: convert to SKB paged frag API.
bnx2x: convert to SKB paged frag API.
bnx2fc: convert to SKB paged frag API.
fcoe: convert to SKB paged frag API.
xen: netfront: convert to SKB paged frag API.
genirq: Add IRQF_RESUME_EARLY and resume such IRQs earlier
xen: only limit memory map to maximum reservation for domain 0.
Jan Beulich (5):
xen/pci: make bus notifier handler return sane values
xen/pciback: use mutex rather than spinlock in passthrough backend
xen/pciback: miscellaneous adjustments
xen/pci: support multi-segment systems
xen-blkback: use kzalloc() in favor of kmalloc()+memset()
Jeremy Fitzhardinge (1):
stop_machine: make stop_machine safe and efficient to call early
Joe Jin (1):
xen-blkback: fixed indentation and comments
Konrad Rzeszutek Wilk (30):
Revert "xen/debug: WARN_ON when identity PFN has no _PAGE_IOMAP flag
set."
xen-pcifront: Update warning comment to use ''e820_host''
option.
xen-swiotlb: Retry up three times to allocate Xen-SWIOTLB
xen-swiotlb: Fix wrong panic.
xen-swiotlb: When doing coherent alloc/dealloc check before swizzling the
MFNs.
xen/pciback: Use mutexes when working with Xenbus state transitions.
xen/pciback: use mutex rather than spinlock in vpci backend
xen/p2m: Make debug/xen/mmu/p2m visible again.
xen/p2m: Use SetPagePrivate and its friends for M2P overrides.
xen/pv-on-hvm:kexec: Fix implicit declaration of function
''xen_hvm_domain''
xen/pciback: Add flag indicating device has been assigned by Xen
xen-blkfront: If no barrier or flush is supported, use invalid operation.
xen/blkback: Support ''feature-barrier'' aka old-style
BARRIER requests.
xen/blkback: Report VBD_WSECT (wr_sect) properly.
xen/blkback: Fix the inhibition to map pages when discarding sector
ranges.
xen/blkback: Check for proper operation.
xen/blkback: Fix two races in the handling of barrier requests.
xen/pciback: Do not dereference psdev during printk when it is NULL.
xen/pciback: Check if the device is found instead of blindly assuming so.
xen/events: BUG() when we can''t allocate our event->irq array.
xen/events: Don''t check the info for NULL as it is already done.
xen/irq: If we fail during msi_capability_init return proper error code.
xen/xenbus: Remove the unnecessary check.
xen/enlighten: Fix compile warnings and set cx to known value.
xen/p2m/debugfs: Fix potential pointer exception.
xen/p2m/debugfs: Make type_name more obvious.
xen/pm_idle: Make pm_idle be default_idle under Xen.
x86/paravirt: PTE updates in k(un)map_atomic need to be synchronous,
regardless of lazy_mmu mode
xen/swiotlb: Use page alignment for early buffer allocation.
Revert "xen/pv-on-hvm kexec: add xs_reset_watches to shutdown watches
from old kernel"
Laszlo Ersek (1):
xen-blkfront: plug device number leak in xlblk_init() error path
Li Dongyang (4):
xen-blkfront: add BLKIF_OP_DISCARD and discard request struct
xen-blkback: Implement discard requests
(''feature-discard'')
xen-blkfront: Handle discard requests.
xen-blkfront: fix a deadlock while handling discard response
Linus Torvalds (2):
Revert "hvc_console: display printk messages on console."
Revert "rtc: Expire alarms after the time is set."
Olaf Hering (6):
xen: use static initializers in xen-balloon.c
xen/pv-on-hvm kexec: prevent crash in xenwatch_thread() when stale watch
events arrive
xen/pv-on-hvm kexec: rebind virqs to existing eventchannel ports
xen/pv-on-hvm kexec+kdump: reset PV devices in kexec or crash kernel
xen/pv-on-hvm kexec: update xs_wire.h:xsd_sockmsg_type from xen-unstable
xen/pv-on-hvm kexec: add xs_reset_watches to shutdown watches from old
kernel
Randy Dunlap (1):
xen-swiotlb: fix printk and panic args
Ruslan Pisarev (6):
Xen: fix whitespaces,tabs coding style issue in drivers/xen/balloon.c
Xen: fix whitespaces,tabs coding style issue in drivers/xen/events.c
Xen: fix braces coding style issue in gntdev.c and grant-table.c
Xen: fix whitespaces,tabs coding style issue in drivers/xen/pci.c
Xen: fix braces coding style issue in xenbus_probe.h
Xen: fix braces and tabs coding style issue in xenbus_probe.c
Stefano Stabellini (4):
xen: add an "highmem" parameter to alloc_xenballooned_pages
xen: modify kernel mappings corresponding to granted pages
xen: XEN_PVHVM depends on PCI
xen: remove XEN_PLATFORM_PCI config option
Thomas Meyer (1):
xen/pciback: use resource_size()
Yu Ke (1):
xen/acpi: Domain0 acpi parser related platform hypercall
Zhenzhong Duan (1):
xen:pvhvm: enable PVHVM VCPU placement when using more than 32 CPUs.