Re: [Xen-devel] [Patch V2 2/2] xen: before ballooning hotplugged memory, set frames to invalid

2015-03-23 Thread David Vrabel
On 20/03/15 13:46, Daniel Kiper wrote: On Fri, Mar 20, 2015 at 01:55:39PM +0100, Juergen Gross wrote: Commit 25b884a83d487fd62c3de7ac1ab5549979188482 (x86/xen: set regions above the end of RAM as 1:1) introduced a regression. Should not we fill everything above maxmem with

Re: [Xen-devel] [Patch V2 2/2] xen: before ballooning hotplugged memory, set frames to invalid

2015-03-23 Thread David Vrabel
On 20/03/15 13:44, Boris Ostrovsky wrote: On 03/20/2015 08:55 AM, Juergen Gross wrote: Commit 25b884a83d487fd62c3de7ac1ab5549979188482 (x86/xen: set regions above the end of RAM as 1:1) introduced a regression. To be able to add memory pages which were added via memory hotplug to a pv

[Xen-devel] [Patch V2 2/2] xen: before ballooning hotplugged memory, set frames to invalid

2015-03-20 Thread Juergen Gross
Commit 25b884a83d487fd62c3de7ac1ab5549979188482 (x86/xen: set regions above the end of RAM as 1:1) introduced a regression. To be able to add memory pages which were added via memory hotplug to a pv domain, the pages must be invalid instead of identity in the p2m list before they can be added.

Re: [Xen-devel] [Patch V2 2/2] xen: before ballooning hotplugged memory, set frames to invalid

2015-03-20 Thread Juergen Gross
On 03/20/2015 02:46 PM, Daniel Kiper wrote: On Fri, Mar 20, 2015 at 01:55:39PM +0100, Juergen Gross wrote: Commit 25b884a83d487fd62c3de7ac1ab5549979188482 (x86/xen: set regions above the end of RAM as 1:1) introduced a regression. To be able to add memory pages which were added via memory

Re: [Xen-devel] [Patch V2 2/2] xen: before ballooning hotplugged memory, set frames to invalid

2015-03-20 Thread Juergen Gross
On 03/20/2015 02:44 PM, Boris Ostrovsky wrote: On 03/20/2015 08:55 AM, Juergen Gross wrote: Commit 25b884a83d487fd62c3de7ac1ab5549979188482 (x86/xen: set regions above the end of RAM as 1:1) introduced a regression. To be able to add memory pages which were added via memory hotplug to a pv

Re: [Xen-devel] [Patch V2 2/2] xen: before ballooning hotplugged memory, set frames to invalid

2015-03-20 Thread Boris Ostrovsky
On 03/20/2015 08:55 AM, Juergen Gross wrote: Commit 25b884a83d487fd62c3de7ac1ab5549979188482 (x86/xen: set regions above the end of RAM as 1:1) introduced a regression. To be able to add memory pages which were added via memory hotplug to a pv domain, the pages must be invalid instead of