OpenE2K/qemu-e2k
13
4
Fork 0
Code Issues 4 Pull Requests Projects 2 Releases Activity

target/ppc: Support directed privileged doorbell interrupt (SDOOR)

Browse Source 
BookS msgsndp instruction to self or DPDES register can cause SDOOR
interrupts which crash QEMU with exception not implemented.

Linux does not use msgsndp in SMT1, and KVM only uses DPDES to cause
doorbells when emulating a SMT guest (which is not the default), so
this has gone unnoticed.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20230530130526.372701-1-npiggin@gmail.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
This commit is contained in:
Nicholas Piggin 2023-05-30 23:05:26 +10:00 committed by Daniel Henrique Barboza
parent 2e9855555e
commit fd7abfab66
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
target/ppc/excp_helper.c
View File

@ -1542,6 +1542,7 @@ static void powerpc_excp_books(PowerPCCPU *cpu, int excp)
case POWERPC_EXCP_DSEG: /* Data segment exception */
case POWERPC_EXCP_ISEG: /* Instruction segment exception */
case POWERPC_EXCP_TRACE: /* Trace exception */
case POWERPC_EXCP_SDOOR: /* Doorbell interrupt */
break;
case POWERPC_EXCP_HISI: /* Hypervisor instruction storage exception */
msr |= env->error_code;
@ -1587,7 +1588,6 @@ static void powerpc_excp_books(PowerPCCPU *cpu, int excp)
case POWERPC_EXCP_PERFM: /* Embedded performance monitor interrupt */
case POWERPC_EXCP_VPUA: /* Vector assist exception */
case POWERPC_EXCP_MAINT: /* Maintenance exception */
case POWERPC_EXCP_SDOOR: /* Doorbell interrupt */
case POWERPC_EXCP_HV_MAINT: /* Hypervisor Maintenance exception */
cpu_abort(cs, "%s exception not implemented\n",
powerpc_excp_name(excp));