talos-obmc-linux/drivers/lguest, branch v3.6-rc3

lguest: Make sure interrupt is allocated ok by lguest_setup_irq

2012-01-12T05:14:47+00:00

Make sure the interrupt is allocated correctly by lguest_setup_irq (check the return value of irq_alloc_desc_at for -ENOMEM) Signed-off-by: Stratos Psomadakis Signed-off-by: Rusty Russell (cleanups and commentry)

lguest: move the lguest tool to the tools directory

2012-01-12T05:14:47+00:00

This is a better location instead of having it in Documentation. Signed-off-by: Davidlohr Bueso Signed-off-by: Rusty Russell (fixed compile)

lguest: switch segment-voodoo-numbers to readable symbols

2012-01-12T05:14:47+00:00

When studying lguest's x86 segment descriptor code, it is not longer necessary to have the Intel x86 architecture manual open on the page with the segment descriptor illustration to understand the crazy numbers assigned to both descriptor structure halves a/b. Now the struct desc_struct's fields, like suggested by Glauber de Oliveira Costa in 2008, are used. Signed-off-by: Jacek Galowicz Signed-off-by: Rusty Russell

virtio: harsher barriers for rpmsg.

2012-01-12T05:14:42+00:00

We were cheating with our barriers; using the smp ones rather than the real device ones. That was fine, until rpmsg came along, which is used to talk to a real device (a non-SMP CPU). Unfortunately, just putting back the real barriers (reverting d57ed95d) causes a performance regression on virtio-pci. In particular, Amos reports netbench's TCP_RR over virtio_net CPU utilization increased up to 35% while throughput went down by up to 14%. By comparison, this branch is in the noise. Reference: https://lkml.org/lkml/2011/12/11/22 Signed-off-by: Rusty Russell

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

2012-01-07T01:22:09+00:00

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1958 commits) net: pack skb_shared_info more efficiently net_sched: red: split red_parms into parms and vars net_sched: sfq: extend limits cnic: Improve error recovery on bnx2x devices cnic: Re-init dev->stats_addr after chip reset net_sched: Bug in netem reordering bna: fix sparse warnings/errors bna: make ethtool_ops and strings const xgmac: cleanups net: make ethtool_ops const vmxnet3" make ethtool ops const xen-netback: make ops structs const virtio_net: Pass gfp flags when allocating rx buffers. ixgbe: FCoE: Add support for ndo_get_fcoe_hbainfo() call netdev: FCoE: Add new ndo_get_fcoe_hbainfo() call igb: reset PHY after recovering from PHY power down igb: add basic runtime PM support igb: Add support for byte queue limits. e1000: cleanup CE4100 MDIO registers access e1000: unmap ce4100_gbe_mdio_base_virt in e1000_remove ...

x86: Fix rflags in FAKE_STACK_FRAME

2011-12-06T09:02:38+00:00

The x86_64 kernel pushes the fake kernel stack in arch/x86/kernel/entry_64.S:FAKE_STACK_FRAME, and rflags register in it does not conform to the specification. Although Intel's manual[1] says bit 1 of it shall be set to 1, this bit is cleared to 0 on pushing the fake stack. [1] Intel(R) 64 and IA-32 Architectures Software Developer's Manual Vol.1 3-21 Figure 3-8. EFLAGS Register If it is not on purpose, it is better to be fixed, because it can lead some tools misunderstanding the stack frame. For example, "crash" utility[2] actually detects it and warns you like below: RIP: ffffffff8005dfa2 RSP: ffff8104ce0c7f58 RFLAGS: 00000200 [...] bt: WARNING: possibly bogus exception frame Signed-off-by: Seiichi Ikarashi Tested-by: Masayoshi MIZUMA Cc: Jan Beulich Cc: Frederic Weisbecker Cc: Linus Torvalds Signed-off-by: Ingo Molnar

enable virtio_net to return bus_info in ethtool -i consistent with emulated NICs

2011-11-16T22:26:46+00:00

Add a new .bus_name to virtio_config_ops then modify virtio_net to call through to it in an ethtool .get_drvinfo routine to report bus_info in ethtool -i output which is consistent with other emulated NICs and the output of lspci. Signed-off-by: Rick Jones Signed-off-by: David S. Miller

lguest: add export.h to lguest files for THIS_MODULE/EXPORT_SYMBOL

2011-10-31T23:32:13+00:00

We need this in advance of the module.h cleanup, or we'll get compile errors like this: CC drivers/lguest/lguest_device.o drivers/lguest/lguest_device.c: In function ‘lguest_devices_init’: drivers/lguest/lguest_device.c:490: error: ‘THIS_MODULE’ undeclared (first use in this function) Signed-off-by: Paul Gortmaker

lguest: move process freezing before pending signals check

2011-10-27T00:26:18+00:00

run_guest tries to freeze the current process after it has handled pending interrupts and before it calls lguest_arch_run_guest. This doesn't work nicely if the task has been killed while being frozen and when we want to handle that signal as soon as possible. Let's move try_to_freeze before we check for pending signal so that we can get out of the loop as soon as possible. Signed-off-by: Michal Hocko Acked-by: Rusty Russell Signed-off-by: Rusty Russell

lguest: Allow running under paravirt-enabled KVM.

2011-10-27T00:26:17+00:00

We actually can run under KVM, as it doesn't paravirtualize anything we need to use; reduce the check to checking we are the normal ringlevel. Reported-by: Stefanos Geraggelos Signed-off-by: Rusty Russell # HG changeset patch