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KVM: PPC: Always use the GPR accessors

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Always use the GPR accessor functions. This will be important later for
Nested APIv2 support which requires additional functionality for
accessing and modifying VCPU state.

Signed-off-by: Jordan Niethe <jniethe5@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20230914030600.16993-2-jniethe5@gmail.com
This commit is contained in:
Jordan Niethe 2023-09-14 13:05:50 +10:00 committed by Michael Ellerman
parent 0bb80ecc33
commit 0e85b7df9c
6 changed files with 21 additions and 13 deletions
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4
arch/powerpc/kvm/book3s_64_vio.c
View File

@ -786,12 +786,12 @@ long kvmppc_h_get_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
idx = (ioba >> stt->page_shift) - stt->offset;
page = stt->pages[idx / TCES_PER_PAGE];
if (!page) {
vcpu->arch.regs.gpr[4] = 0;
kvmppc_set_gpr(vcpu, 4, 0);
return H_SUCCESS;
}
tbl = (u64 *)page_address(page);
vcpu->arch.regs.gpr[4] = tbl[idx % TCES_PER_PAGE];
kvmppc_set_gpr(vcpu, 4, tbl[idx % TCES_PER_PAGE]);
return H_SUCCESS;
}

8
arch/powerpc/kvm/book3s_hv.c
View File

@ -1267,10 +1267,14 @@ int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu)
return RESUME_HOST;
break;
#endif
case H_RANDOM:
if (!arch_get_random_seed_longs(&vcpu->arch.regs.gpr[4], 1))
case H_RANDOM: {
unsigned long rand;
if (!arch_get_random_seed_longs(&rand, 1))
ret = H_HARDWARE;
kvmppc_set_gpr(vcpu, 4, rand);
break;
}
case H_RPT_INVALIDATE:
ret = kvmppc_h_rpt_invalidate(vcpu, kvmppc_get_gpr(vcpu, 4),
kvmppc_get_gpr(vcpu, 5),

6
arch/powerpc/kvm/book3s_hv_builtin.c
View File

@ -182,9 +182,13 @@ EXPORT_SYMBOL_GPL(kvmppc_hwrng_present);
long kvmppc_rm_h_random(struct kvm_vcpu *vcpu)
{
unsigned long rand;
if (ppc_md.get_random_seed &&
ppc_md.get_random_seed(&vcpu->arch.regs.gpr[4]))
ppc_md.get_random_seed(&rand)) {
kvmppc_set_gpr(vcpu, 4, rand);
return H_SUCCESS;
}
return H_HARDWARE;
}

8
arch/powerpc/kvm/book3s_hv_rm_mmu.c
View File

@ -776,8 +776,8 @@ long kvmppc_h_read(struct kvm_vcpu *vcpu, unsigned long flags,
r = rev[i].guest_rpte | (r & (HPTE_R_R | HPTE_R_C));
r &= ~HPTE_GR_RESERVED;
}
vcpu->arch.regs.gpr[4 + i * 2] = v;
vcpu->arch.regs.gpr[5 + i * 2] = r;
kvmppc_set_gpr(vcpu, 4 + i * 2, v);
kvmppc_set_gpr(vcpu, 5 + i * 2, r);
}
return H_SUCCESS;
}
@ -824,7 +824,7 @@ long kvmppc_h_clear_ref(struct kvm_vcpu *vcpu, unsigned long flags,
}
}
}
vcpu->arch.regs.gpr[4] = gr;
kvmppc_set_gpr(vcpu, 4, gr);
ret = H_SUCCESS;
out:
unlock_hpte(hpte, v & ~HPTE_V_HVLOCK);
@ -872,7 +872,7 @@ long kvmppc_h_clear_mod(struct kvm_vcpu *vcpu, unsigned long flags,
kvmppc_set_dirty_from_hpte(kvm, v, gr);
}
}
vcpu->arch.regs.gpr[4] = gr;
kvmppc_set_gpr(vcpu, 4, gr);
ret = H_SUCCESS;
out:
unlock_hpte(hpte, v & ~HPTE_V_HVLOCK);

4
arch/powerpc/kvm/book3s_hv_rm_xics.c
View File

@ -481,7 +481,7 @@ static void icp_rm_down_cppr(struct kvmppc_xics *xics, struct kvmppc_icp *icp,
unsigned long xics_rm_h_xirr_x(struct kvm_vcpu *vcpu)
{
vcpu->arch.regs.gpr[5] = get_tb();
kvmppc_set_gpr(vcpu, 5, get_tb());
return xics_rm_h_xirr(vcpu);
}
@ -518,7 +518,7 @@ unsigned long xics_rm_h_xirr(struct kvm_vcpu *vcpu)
} while (!icp_rm_try_update(icp, old_state, new_state));
/* Return the result in GPR4 */
vcpu->arch.regs.gpr[4] = xirr;
kvmppc_set_gpr(vcpu, 4, xirr);
return check_too_hard(xics, icp);
}

4
arch/powerpc/kvm/book3s_xive.c
View File

@ -328,7 +328,7 @@ static unsigned long xive_vm_h_xirr(struct kvm_vcpu *vcpu)
*/
/* Return interrupt and old CPPR in GPR4 */
vcpu->arch.regs.gpr[4] = hirq | (old_cppr << 24);
kvmppc_set_gpr(vcpu, 4, hirq | (old_cppr << 24));
return H_SUCCESS;
}
@ -364,7 +364,7 @@ static unsigned long xive_vm_h_ipoll(struct kvm_vcpu *vcpu, unsigned long server
hirq = xive_vm_scan_interrupts(xc, pending, scan_poll);
/* Return interrupt and old CPPR in GPR4 */
vcpu->arch.regs.gpr[4] = hirq | (xc->cppr << 24);
kvmppc_set_gpr(vcpu, 4, hirq | (xc->cppr << 24));
return H_SUCCESS;
}