Re: [RFC PATCH v2 10/23] KVM: arm64: Extend reset_unknown() to handle mixed RES0/UNKNOWN registers

2018-11-15 Thread Dave Martin
On Fri, Nov 02, 2018 at 09:11:19AM +0100, Christoffer Dall wrote: > On Fri, Sep 28, 2018 at 02:39:14PM +0100, Dave Martin wrote: > > The reset_unknown() system register helper initialises a guest > > register to a distinctive junk value on vcpu reset, to help expose > > and debug deficient

Re: [RFC PATCH v2 10/23] KVM: arm64: Extend reset_unknown() to handle mixed RES0/UNKNOWN registers

2018-11-02 Thread Christoffer Dall
On Fri, Sep 28, 2018 at 02:39:14PM +0100, Dave Martin wrote: > The reset_unknown() system register helper initialises a guest > register to a distinctive junk value on vcpu reset, to help expose > and debug deficient register initialisation within the guest. > > Some registers such as the SVE

[RFC PATCH v2 10/23] KVM: arm64: Extend reset_unknown() to handle mixed RES0/UNKNOWN registers

2018-09-28 Thread Dave Martin
The reset_unknown() system register helper initialises a guest register to a distinctive junk value on vcpu reset, to help expose and debug deficient register initialisation within the guest. Some registers such as the SVE control register ZCR_EL1 contain a mixture of UNKNOWN fields and RES0