| Message ID | 1365417138-8202-3-git-send-email-Bharat.Bhushan@freescale.com |
|---|---|
| State | New, archived |
| Headers | show |
On Mon, Apr 08, 2013 at 04:02:13PM +0530, Bharat Bhushan wrote: > Instruction emulation return EMULATE_DO_PAPR when it requires > exit to userspace on book3s. Similar return is required > for booke. EMULATE_DO_PAPR reads out to be confusing so it is > renamed to EMULATE_EXIT_USER. This and the following patch look like an unnecessary and confusing change to me. If you want an EMULATE_EXIT_USER, why not just add it and use it in your new code, and leave the EMULATE_DO_PAPR code alone? Paul. -- To unsubscribe from this list: send the line "unsubscribe kvm-ppc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On 10.04.2013, at 00:37, Paul Mackerras wrote: > On Mon, Apr 08, 2013 at 04:02:13PM +0530, Bharat Bhushan wrote: >> Instruction emulation return EMULATE_DO_PAPR when it requires >> exit to userspace on book3s. Similar return is required >> for booke. EMULATE_DO_PAPR reads out to be confusing so it is >> renamed to EMULATE_EXIT_USER. > > This and the following patch look like an unnecessary and confusing > change to me. If you want an EMULATE_EXIT_USER, why not just add it > and use it in your new code, and leave the EMULATE_DO_PAPR code alone? I actually suggested that change to Bharat on a former patch review. I think it clutters the EMULATE_ exit ID name space if we extend it with simple "go to user space with message x" types every time we add a new user space exit. Alex -- To unsubscribe from this list: send the line "unsubscribe kvm-ppc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/arch/powerpc/include/asm/kvm_ppc.h b/arch/powerpc/include/asm/kvm_ppc.h index f589307..8c2c8ef 100644 --- a/arch/powerpc/include/asm/kvm_ppc.h +++ b/arch/powerpc/include/asm/kvm_ppc.h @@ -44,7 +44,7 @@ enum emulation_result { EMULATE_DO_DCR, /* kvm_run filled with DCR request */ EMULATE_FAIL, /* can't emulate this instruction */ EMULATE_AGAIN, /* something went wrong. go again */ - EMULATE_DO_PAPR, /* kvm_run filled with PAPR request */ + EMULATE_EXIT_USER, /* emulation requires exit to user-space */ }; extern int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu); diff --git a/arch/powerpc/kvm/book3s_emulate.c b/arch/powerpc/kvm/book3s_emulate.c index 836c569..cdd19d6 100644 --- a/arch/powerpc/kvm/book3s_emulate.c +++ b/arch/powerpc/kvm/book3s_emulate.c @@ -194,7 +194,7 @@ int kvmppc_core_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu, run->papr_hcall.args[i] = gpr; } - emulated = EMULATE_DO_PAPR; + emulated = EMULATE_EXIT_USER; break; } #endif diff --git a/arch/powerpc/kvm/book3s_pr.c b/arch/powerpc/kvm/book3s_pr.c index 286e23e..b960faf 100644 --- a/arch/powerpc/kvm/book3s_pr.c +++ b/arch/powerpc/kvm/book3s_pr.c @@ -762,7 +762,7 @@ program_interrupt: run->exit_reason = KVM_EXIT_MMIO; r = RESUME_HOST_NV; break; - case EMULATE_DO_PAPR: + case EMULATE_EXIT_USER: run->exit_reason = KVM_EXIT_PAPR_HCALL; vcpu->arch.hcall_needed = 1; r = RESUME_HOST_NV;
Instruction emulation return EMULATE_DO_PAPR when it requires exit to userspace on book3s. Similar return is required for booke. EMULATE_DO_PAPR reads out to be confusing so it is renamed to EMULATE_EXIT_USER. Signed-off-by: Bharat Bhushan <bharat.bhushan@freescale.com> --- arch/powerpc/include/asm/kvm_ppc.h | 2 +- arch/powerpc/kvm/book3s_emulate.c | 2 +- arch/powerpc/kvm/book3s_pr.c | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-)