ppc/vhyp: reset exception state when handling vhyp hcall

Convention is to reset the exception_index and error_code after handling
an interrupt. The vhyp hcall handler fails to do this. This does not
appear to have ill effects because cpu_handle_exception() clears
exception_index later, but it is fragile and inconsistent. Reset the
exception state after handling vhyp hcall like other handlers.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
This commit is contained in:
Nicholas Piggin 2023-08-08 14:19:43 +10:00 committed by Cédric Le Goater
parent 17f826af86
commit 2c71b4f604

View File

@ -843,6 +843,7 @@ static void powerpc_excp_7xx(PowerPCCPU *cpu, int excp)
PPCVirtualHypervisorClass *vhc =
PPC_VIRTUAL_HYPERVISOR_GET_CLASS(cpu->vhyp);
vhc->hypercall(cpu->vhyp, cpu);
powerpc_reset_excp_state(cpu);
return;
}
@ -1014,6 +1015,7 @@ static void powerpc_excp_74xx(PowerPCCPU *cpu, int excp)
PPCVirtualHypervisorClass *vhc =
PPC_VIRTUAL_HYPERVISOR_GET_CLASS(cpu->vhyp);
vhc->hypercall(cpu->vhyp, cpu);
powerpc_reset_excp_state(cpu);
return;
}
@ -1526,6 +1528,7 @@ static void powerpc_excp_books(PowerPCCPU *cpu, int excp)
PPCVirtualHypervisorClass *vhc =
PPC_VIRTUAL_HYPERVISOR_GET_CLASS(cpu->vhyp);
vhc->hypercall(cpu->vhyp, cpu);
powerpc_reset_excp_state(cpu);
return;
}
if (env->insns_flags2 & PPC2_ISA310) {