On Thu, Feb 15, 2018 at 10:03:18PM +0100, Christoffer Dall wrote: > SPSR_EL1 is not used by a VHE host kernel and can be deferred, but we > need to rework the accesses to this register to access the latest value > depending on whether or not guest system registers are loaded on the CPU > or only reside in memory. > > The handling of accessing the various banked SPSRs for 32-bit VMs is a > bit clunky, but this will be improved in following patches which will > first prepare and subsequently implement deferred save/restore of the > 32-bit registers, including the 32-bit SPSRs. > > Signed-off-by: Christoffer Dall <christoffer.dall@xxxxxxxxxx> > --- > > Notes: > Changes since v2: > - New patch (deferred register handling has been reworked) > > arch/arm/include/asm/kvm_emulate.h | 12 ++++++++++- > arch/arm/kvm/emulate.c | 2 +- > arch/arm64/include/asm/kvm_emulate.h | 41 +++++++++++++++++++++++++++++++----- > arch/arm64/kvm/inject_fault.c | 4 ++-- > virt/kvm/arm/aarch32.c | 2 +- > 5 files changed, 51 insertions(+), 10 deletions(-) > Reviewed-by: Andrew Jones <drjones@xxxxxxxxxx>
