linux/include/xen/interface, branch v4.1

xen: synchronize include/xen/interface/xen.h with xen

2015-03-16T14:49:13Z

The header include/xen/interface/xen.h doesn't contain all definitions from Xen's version of that header. Update it accordingly. Signed-off-by: Juergen Gross Reviewed-by: David Vrabel Signed-off-by: David Vrabel

xen/gntdev: mark userspace PTEs as special on x86 PV guests

2015-01-28T14:04:21Z

In an x86 PV guest, get_user_pages_fast() on a userspace address range containing foreign mappings does not work correctly because the M2P lookup of the MFN from a userspace PTE may return the wrong page. Force get_user_pages_fast() to fail on such addresses by marking the PTEs as special. If Xen has XENFEAT_gnttab_map_avail_bits (available since at least 4.0), we can do so efficiently in the grant map hypercall. Otherwise, it needs to be done afterwards. This is both inefficient and racy (the mapping is visible to the task before we fixup the PTEs), but will be fine for well-behaved applications that do not use the mapping until after the mmap() system call returns. Guests with XENFEAT_auto_translated_physmap (ARM and x86 HVM or PVH) do not need this since get_user_pages() has always worked correctly for them. Signed-off-by: David Vrabel Reviewed-by: Stefano Stabellini

x86/xen: properly retrieve NMI reason

2015-01-13T09:39:50Z

Using the native code here can't work properly, as the hypervisor would normally have cleared the two reason bits by the time Dom0 gets to see the NMI (if passed to it at all). There's a shared info field for this, and there's an existing hook to use - just fit the two together. This is particularly relevant so that NMIs intended to be handled by APEI / GHES actually make it to the respective handler. Note that the hook can (and should) be used irrespective of whether being in Dom0, as accessing port 0x61 in a DomU would be even worse, while the shared info field would just hold zero all the time. Note further that hardware NMI handling for PVH doesn't currently work anyway due to missing code in the hypervisor (but it is expected to work the native rather than the PV way). Signed-off-by: Jan Beulich Reviewed-by: Boris Ostrovsky Signed-off-by: David Vrabel

xen/arm: introduce GNTTABOP_cache_flush

2014-12-04T12:41:54Z

Introduce support for new hypercall GNTTABOP_cache_flush. Use it to perform cache flashing on pages used for dma when necessary. If GNTTABOP_cache_flush is supported by the hypervisor, we don't need to bounce dma map operations that involve foreign grants and non-coherent devices. Signed-off-by: Stefano Stabellini Reviewed-by: Catalin Marinas Acked-by: Ian Campbell

xen/arm: remove handling of XENFEAT_grant_map_identity

2014-12-04T12:41:45Z

The feature has been removed from Xen. Also Linux cannot use it on ARM32 without CONFIG_ARM_LPAE. Signed-off-by: Stefano Stabellini Acked-by: Ian Campbell Reviewed-by: David Vrabel Reviewed-by: Catalin Marinas

xen: sync some headers with xen tree

2014-10-03T11:34:52Z

To be able to use an initially unmapped initrd with xen the following header files must be synced to a newer version from the xen tree: include/xen/interface/elfnote.h include/xen/interface/xen.h As the KEXEC and DUMPCORE related ELFNOTES are not relevant for the kernel they are omitted from elfnote.h. Signed-off-by: Juergen Gross Signed-off-by: David Vrabel

xen: Add Xen pvSCSI protocol description

2014-09-23T13:36:19Z

Add the definition of pvSCSI protocol used between the pvSCSI frontend in a XEN domU and the pvSCSI backend in a XEN driver domain (usually Dom0). This header was originally provided by Fujitsu for Xen based on Linux 2.6.18. Changes are: - Added comments. - Adapt to Linux style guide. - Add support for larger SG-lists by putting them in an own granted page. - Remove stale definitions. Signed-off-by: Juergen Gross Signed-off-by: David Vrabel

xen/arm: introduce XENFEAT_grant_map_identity

2014-09-11T18:11:52Z

The flag tells us that the hypervisor maps a grant page to guest physical address == machine address of the page in addition to the normal grant mapping address. It is needed to properly issue cache maintenance operation at the completion of a DMA operation involving a foreign grant. Signed-off-by: Stefano Stabellini Tested-by: Denis Schneider

xen: Define EFI related stuff

2014-07-18T20:23:57Z

Define constants and structures which are needed to properly execute EFI related hypercall in Xen dom0. This patch is based on Jan Beulich and Tang Liang work. Signed-off-by: Jan Beulich Signed-off-by: Tang Liang Signed-off-by: Daniel Kiper Reviewed-by: David Vrabel Acked-by: Stefano Stabellini Signed-off-by: Matt Fleming

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

2014-06-12T21:27:40Z

Pull networking updates from David Miller: 1) Seccomp BPF filters can now be JIT'd, from Alexei Starovoitov. 2) Multiqueue support in xen-netback and xen-netfront, from Andrew J Benniston. 3) Allow tweaking of aggregation settings in cdc_ncm driver, from Bjørn Mork. 4) BPF now has a "random" opcode, from Chema Gonzalez. 5) Add more BPF documentation and improve test framework, from Daniel Borkmann. 6) Support TCP fastopen over ipv6, from Daniel Lee. 7) Add software TSO helper functions and use them to support software TSO in mvneta and mv643xx_eth drivers. From Ezequiel Garcia. 8) Support software TSO in fec driver too, from Nimrod Andy. 9) Add Broadcom SYSTEMPORT driver, from Florian Fainelli. 10) Handle broadcasts more gracefully over macvlan when there are large numbers of interfaces configured, from Herbert Xu. 11) Allow more control over fwmark used for non-socket based responses, from Lorenzo Colitti. 12) Do TCP congestion window limiting based upon measurements, from Neal Cardwell. 13) Support busy polling in SCTP, from Neal Horman. 14) Allow RSS key to be configured via ethtool, from Venkata Duvvuru. 15) Bridge promisc mode handling improvements from Vlad Yasevich. 16) Don't use inetpeer entries to implement ID generation any more, it performs poorly, from Eric Dumazet. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1522 commits) rtnetlink: fix userspace API breakage for iproute2 < v3.9.0 tcp: fixing TLP's FIN recovery net: fec: Add software TSO support net: fec: Add Scatter/gather support net: fec: Increase buffer descriptor entry number net: fec: Factorize feature setting net: fec: Enable IP header hardware checksum net: fec: Factorize the .xmit transmit function bridge: fix compile error when compiling without IPv6 support bridge: fix smatch warning / potential null pointer dereference via-rhine: fix full-duplex with autoneg disable bnx2x: Enlarge the dorq threshold for VFs bnx2x: Check for UNDI in uncommon branch bnx2x: Fix 1G-baseT link bnx2x: Fix link for KR with swapped polarity lane sctp: Fix sk_ack_backlog wrap-around problem net/core: Add VF link state control policy net/fsl: xgmac_mdio is dependent on OF_MDIO net/fsl: Make xgmac_mdio read error message useful net_sched: drr: warn when qdisc is not work conserving ...