Re: [Xen-devel] [RFC PATCH] crashdump/x86: Add option to get crash kernel region size

2015-11-30 Thread Simon Horman
On Mon, Nov 30, 2015 at 08:39:31AM +0100, Daniel Kiper wrote: > On Mon, Nov 30, 2015 at 08:55:32AM +0900, Simon Horman wrote: > > On Sat, Nov 28, 2015 at 09:14:04PM +0100, Daniel Kiper wrote: > > > Crash kernel region size is available via sysfs on Linux running on > > > bare metal. However, this

Re: [Xen-devel] [RFC PATCH] crashdump/x86: Add option to get crash kernel region size

2015-11-29 Thread Daniel Kiper
On Mon, Nov 30, 2015 at 08:55:32AM +0900, Simon Horman wrote: > On Sat, Nov 28, 2015 at 09:14:04PM +0100, Daniel Kiper wrote: > > Crash kernel region size is available via sysfs on Linux running on > > bare metal. However, this does not work when Linux runs as Xen dom0. > > In this case Xen crash

Re: [Xen-devel] [RFC PATCH] crashdump/x86: Add option to get crash kernel region size

2015-11-29 Thread Simon Horman
On Sat, Nov 28, 2015 at 09:14:04PM +0100, Daniel Kiper wrote: > Crash kernel region size is available via sysfs on Linux running on > bare metal. However, this does not work when Linux runs as Xen dom0. > In this case Xen crash kernel region size should be established using > __HYPERVISOR_kexec_op

[Xen-devel] [RFC PATCH] crashdump/x86: Add option to get crash kernel region size

2015-11-28 Thread Daniel Kiper
Crash kernel region size is available via sysfs on Linux running on bare metal. However, this does not work when Linux runs as Xen dom0. In this case Xen crash kernel region size should be established using __HYPERVISOR_kexec_op hypercall (Linux kernel kexec functionality does not make a lot of