On Wed, Feb 01, 2017 at 04:29:50PM +0000, Marc Zyngier wrote: > On 27/01/17 18:07, Will Deacon wrote: > > The SPE buffer is virtually addressed, using the page tables of the CPU > > MMU. Unusually, this means that the EL0/1 page table may be live whilst > > we're executing at EL2 on non-VHE configurations. When VHE is in use, > > we can use the same property to profile the guest behind its back. > > > > This patch adds the relevant disabling and flushing code to KVM so that > > the host can make use of SPE without corrupting guest memory, and any > > attempts by a guest to use SPE will result in a trap. > > > > Cc: Marc Zyngier <[email protected]> > > Cc: Alex Bennée <[email protected]> > > Cc: Christoffer Dall <[email protected]> > > Signed-off-by: Will Deacon <[email protected]> > > --- > > arch/arm64/include/asm/kvm_arm.h | 3 ++ > > arch/arm64/include/asm/kvm_host.h | 7 ++++- > > arch/arm64/kvm/debug.c | 6 ++++ > > arch/arm64/kvm/hyp/debug-sr.c | 66 > > +++++++++++++++++++++++++++++++++++++-- > > arch/arm64/kvm/hyp/switch.c | 17 +++++++++- > > 5 files changed, 95 insertions(+), 4 deletions(-)
[...] > Acked-by: Marc Zyngier <[email protected]> Thanks! Given that this patch depends on an earlier one in the series (already queued via arm64) and the rest of the series depends on this patch, do you mind if I take this via arm64 for 4.11? It applies cleanly against current -next. Will
