Re: [PATCH] KVM: PPC: remove mmio_vsx_tx_sx_enabled in PR KVM MMIO emulation

On Thu, May 24, 2018 at 05:01:26PM +0800, wei.guo.simon@gmail.com wrote:

From: Simon Guo <redacted>

Originally PR KVM MMIO emulation uses only 0~31#(5 bits) for VSR
reg number, and use mmio_vsx_tx_sx_enabled field together for
0~63# VSR regs.

Currently PR KVM MMIO emulation is reimplemented with analyse_instr()
assistence. analyse_instr() returns 0~63 for VSR register number, so
it is not necessary to use additional mmio_vsx_tx_sx_enabled field
any more.

This patch extends related reg bits(expand io_gpr to u16 from u8
and use 6 bits for VSR reg#), so that mmio_vsx_tx_sx_enabled can
be removed.

Signed-off-by: Simon Guo <redacted>

It applies to HV KVM too. I will correct the commit message in next 
version.

Thanks,
- Simon