On Sun, May 12, 2019 at 09:36:16AM +0100, Andrew Jones wrote:
> These are the SVE equivalents to kvm_arch_get/put_fpsimd.
>
> Signed-off-by: Andrew Jones <drjo...@redhat.com>
> ---
> target/arm/kvm64.c | 127 +++++++++++++++++++++++++++++++++++++++++++--
> 1 file changed, 123 insertions(+), 4 deletions(-)
[...]
> +static int kvm_arch_put_sve(CPUState *cs)
> +{
> + ARMCPU *cpu = ARM_CPU(cs);
> + CPUARMState *env = &cpu->env;
> + struct kvm_one_reg reg;
> + int n, ret;
> +
> + for (n = 0; n < KVM_ARM64_SVE_NUM_ZREGS; n++) {
> + uint64_t *q = aa64_vfp_qreg(env, n);
> +#ifdef HOST_WORDS_BIGENDIAN
> + uint64_t d[ARM_MAX_VQ * 2];
> + int i;
> + for (i = 0; i < cpu->sve_max_vq * 2; i++) {
> + d[i] = q[cpu->sve_max_vq * 2 - 1 - i];
> + }
> + reg.addr = (uintptr_t)d;
> +#else
> + reg.addr = (uintptr_t)q;
> +#endif
> + reg.id = KVM_REG_ARM64_SVE_ZREG(n, 0);
Will this silently go wrong if more than one slice is required (i.e.,
the register size grows beyond 8192 bits?)
[...]
Cheers
---Dave
