Re: [Xen-devel] [PATCH] hvmloader: avoid tests when they would clobber used memory

2017-05-19 Thread Julien Grall
On 18/05/17 11:19, Andrew Cooper wrote: On 16/05/17 11:16, Jan Beulich wrote: First of all limit the memory range used for testing to 4Mb: There's no point placing page tables right above 8Mb when they can equally well live at the bottom of the chunk at 4Mb - rep_io_test() cares about the 5Mb.

Re: [Xen-devel] [PATCH] hvmloader: avoid tests when they would clobber used memory

2017-05-18 Thread Andrew Cooper
On 16/05/17 11:16, Jan Beulich wrote: > First of all limit the memory range used for testing to 4Mb: There's no > point placing page tables right above 8Mb when they can equally well > live at the bottom of the chunk at 4Mb - rep_io_test() cares about the > 5Mb...7Mb range only anyway. In a subsequ

[Xen-devel] [PATCH] hvmloader: avoid tests when they would clobber used memory

2017-05-16 Thread Jan Beulich
First of all limit the memory range used for testing to 4Mb: There's no point placing page tables right above 8Mb when they can equally well live at the bottom of the chunk at 4Mb - rep_io_test() cares about the 5Mb...7Mb range only anyway. In a subsequent patch this will then also allow simply loo