Re: [Xen-devel] [PATCH 07/12] xen: arm: Handle CP15 register traps from userspace

2015-03-26 Thread Ian Campbell
On Wed, 2015-03-25 at 18:59 +, Julien Grall wrote: > Hi Ian, > > On 25/03/15 14:22, Ian Campbell wrote: > > Previously userspace access to PM* would have been incorrectly (but > > benignly) implemented as RAZ/WI when running on a 32-bit kernel and > > would cause a hypervisor exception (host c

Re: [Xen-devel] [PATCH 07/12] xen: arm: Handle CP15 register traps from userspace

2015-03-25 Thread Julien Grall
Hi Ian, On 25/03/15 14:22, Ian Campbell wrote: > Previously userspace access to PM* would have been incorrectly (but > benignly) implemented as RAZ/WI when running on a 32-bit kernel and > would cause a hypervisor exception (host crash) when running a 64-bit > kernel (this was already solved via t

[Xen-devel] [PATCH 07/12] xen: arm: Handle CP15 register traps from userspace

2015-03-25 Thread Ian Campbell
Previously userspace access to PM* would have been incorrectly (but benignly) implemented as RAZ/WI when running on a 32-bit kernel and would cause a hypervisor exception (host crash) when running a 64-bit kernel (this was already solved via the fix to XSA-102). CLIDR, CCSIDR, DCCISW, ACTLR, PMINT