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| author | Simon Guo <wei.guo.simon@gmail.com> | 2018-05-28 09:48:26 +0800 |
|---|---|---|
| committer | Paul Mackerras <paulus@ozlabs.org> | 2018-07-18 15:14:45 +1000 |
| commit | 4eeb85568e5653c71d901f7593d3f3e7e2a5414f (patch) | |
| tree | 5af1dc881d288592a9f2e3811cc2eae0fc1c87e6 /arch/powerpc/kvm/emulate_loadstore.c | |
| parent | 6f0d349d922ba44e4348a17a78ea51b7135965b1 (diff) | |
| download | linux-4eeb85568e5653c71d901f7593d3f3e7e2a5414f.tar.bz2 | |
KVM: PPC: Remove mmio_vsx_tx_sx_enabled in KVM MMIO emulation
Originally PPC 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 PPC KVM MMIO emulation is reimplemented with analyse_instr()
assistance. 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 <wei.guo.simon@gmail.com>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Diffstat (limited to 'arch/powerpc/kvm/emulate_loadstore.c')
| -rw-r--r-- | arch/powerpc/kvm/emulate_loadstore.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/arch/powerpc/kvm/emulate_loadstore.c b/arch/powerpc/kvm/emulate_loadstore.c index afde788be141..75dce1ef3bc8 100644 --- a/arch/powerpc/kvm/emulate_loadstore.c +++ b/arch/powerpc/kvm/emulate_loadstore.c @@ -106,7 +106,6 @@ int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu) * if mmio_vsx_tx_sx_enabled == 1, copy data between * VSR[32..63] and memory */ - vcpu->arch.mmio_vsx_tx_sx_enabled = get_tx_or_sx(inst); vcpu->arch.mmio_vsx_copy_nums = 0; vcpu->arch.mmio_vsx_offset = 0; vcpu->arch.mmio_copy_type = KVMPPC_VSX_COPY_NONE; @@ -242,8 +241,8 @@ int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu) } emulated = kvmppc_handle_vsx_load(run, vcpu, - KVM_MMIO_REG_VSX | (op.reg & 0x1f), - io_size_each, 1, op.type & SIGNEXT); + KVM_MMIO_REG_VSX|op.reg, io_size_each, + 1, op.type & SIGNEXT); break; } #endif @@ -363,7 +362,7 @@ int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu) } emulated = kvmppc_handle_vsx_store(run, vcpu, - op.reg & 0x1f, io_size_each, 1); + op.reg, io_size_each, 1); break; } #endif |