Re: [PATCH v6 14/38] KVM: arm64: Provide __flush_dcache_area at EL2

[Will Deacon]

On Fri, Mar 19, 2021 at 10:01:22AM +0000, Quentin Perret wrote:
> We will need to do cache maintenance at EL2 soon, so compile a copy of
> __flush_dcache_area at EL2, and provide a copy of arm64_ftr_reg_ctrel0
> as it is needed by the read_ctr macro.
> 
> Signed-off-by: Quentin Perret <qperret@xxxxxxxxxx>
> ---
>  arch/arm64/include/asm/kvm_cpufeature.h |  2 ++
>  arch/arm64/kvm/hyp/nvhe/Makefile        |  3 ++-
>  arch/arm64/kvm/hyp/nvhe/cache.S         | 13 +++++++++++++
>  arch/arm64/kvm/hyp/nvhe/hyp-smp.c       |  6 ++++++
>  arch/arm64/kvm/sys_regs.c               |  1 +
>  5 files changed, 24 insertions(+), 1 deletion(-)
>  create mode 100644 arch/arm64/kvm/hyp/nvhe/cache.S

Acked-by: Will Deacon <will@xxxxxxxxxx>

Will