Re: [Xen-devel] [PATCH] x86/mm: Skip the hypervisor range when walking PGD

2015-11-05 Thread Boris Ostrovsky
On 11/05/2015 05:31 PM, H. Peter Anvin wrote: On 11/05/15 10:56, Boris Ostrovsky wrote: The range between 0x8000 and 0x87ff is reserved for hypervisor and therefore we should not try to follow PGD's indexes corresponding to those addresses. While this has alsways been

Re: [Xen-devel] [PATCH] x86/mm: Skip the hypervisor range when walking PGD

2015-11-05 Thread H. Peter Anvin
On 11/05/15 10:56, Boris Ostrovsky wrote: > The range between 0x8000 and 0x87ff is reserved > for hypervisor and therefore we should not try to follow PGD's indexes > corresponding to those addresses. > > While this has alsways been a problem, with commit e1a58320a38d ("x86

[Xen-devel] [PATCH] x86/mm: Skip the hypervisor range when walking PGD

2015-11-05 Thread Boris Ostrovsky
The range between 0x8000 and 0x87ff is reserved for hypervisor and therefore we should not try to follow PGD's indexes corresponding to those addresses. While this has alsways been a problem, with commit e1a58320a38d ("x86/mm: Warn on W^X mappings") ptdump_walk_pgd_level_co