Re: [PATCH v3 02/11] x86/kexec: Add extra pointers to transition page table PGD, PUD, PMD and PTE

2013-01-03 Thread Borislav Petkov
On Thu, Dec 27, 2012 at 03:19:24PM -0800, Daniel Kiper wrote: > > Hmm... this code is being redone at the moment... this might conflict. > > Is this available somewhere? May I have a look at it? http://marc.info/?l=linux-kernel&m=135581534620383 The for-x86-boot-v7 and -v8 branches. HTH. -- R

Re: [RFC PATCH] virtio-net: reset virtqueue affinity when doing cpu hotplug

2013-01-03 Thread Eric Dumazet
On Wed, 2012-12-26 at 15:06 +0800, Wanlong Gao wrote: > Add a cpu notifier to virtio-net, so that we can reset the > virtqueue affinity if the cpu hotplug happens. It improve > the performance through enabling or disabling the virtqueue > affinity after doing cpu hotplug. > > Cc: Rusty Russell >

Re: [PATCH] virtio_console: correct error message on failure of debugfs_create_dir

2013-01-03 Thread Arnd Bergmann
On Friday 21 December 2012, Amit Shah wrote: > On (Thu) 20 Dec 2012 [14:11:21], Sasha Levin wrote: > > debugfs_create_dir() returns NULL if it fails, there's little point in > > calling PTR_ERR on it. > > debugfs_create_dir() does return an error value if debugfs is not > enabled. > > This check f

Re: [PATCH v3 02/11] x86/kexec: Add extra pointers to transition page table PGD, PUD, PMD and PTE

2013-01-03 Thread Jan Beulich
>>> On 27.12.12 at 03:18, Daniel Kiper wrote: > Some implementations (e.g. Xen PVOPS) could not use part of identity page > table > to construct transition page table. It means that they require separate > PUDs, > PMDs and PTEs for virtual and physical (identity) mapping. To satisfy that > requi

Re: [Xen-devel] [PATCH v3 00/11] xen: Initial kexec/kdump implementation

2013-01-03 Thread Jan Beulich
>>> On 02.01.13 at 12:26, Andrew Cooper wrote: > On 27/12/12 18:02, Eric W. Biederman wrote: >> It probably make sense to split them apart a little even. > > Thinking about this split, there might be a way to simply it even more. > > /sbin/kexec can load the "Xen" crash kernel itself by issuing

Re: [PATCH v2 1/5] virtio: add functions for piecewise addition of buffers

2013-01-03 Thread Paolo Bonzini
Il 02/01/2013 06:03, Rusty Russell ha scritto: > Paolo Bonzini writes: >> The virtqueue_add_buf function has two limitations: >> >> 1) it requires the caller to provide all the buffers in a single call; >> >> 2) it does not support chained scatterlists: the buffers must be >> provided as an array

Re: [PATCH v2 1/5] virtio: add functions for piecewise addition of buffers

2013-01-03 Thread Wanlong Gao
On 01/02/2013 01:03 PM, Rusty Russell wrote: > Paolo Bonzini writes: >> The virtqueue_add_buf function has two limitations: >> >> 1) it requires the caller to provide all the buffers in a single call; >> >> 2) it does not support chained scatterlists: the buffers must be >> provided as an array of