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| author | Nicholas Piggin <npiggin@gmail.com> | 2023-05-30 23:43:13 +1000 |
|---|---|---|
| committer | Daniel Henrique Barboza <danielhb413@gmail.com> | 2023-06-10 10:19:24 -0300 |
| commit | c29b070418c79fa8e09d17e4b52f3ffddd393764 (patch) | |
| tree | a60b9f82f4dc07c01b8fd98363ac82e72bbfe718 /target/ppc/excp_helper.c | |
| parent | fd7abfab662a2bd8bbf63ad52d4b58243cd9c409 (diff) | |
| download | qemu-c29b070418c79fa8e09d17e4b52f3ffddd393764.zip qemu-c29b070418c79fa8e09d17e4b52f3ffddd393764.tar.gz qemu-c29b070418c79fa8e09d17e4b52f3ffddd393764.tar.bz2 | |
target/ppc: PMU implement PERFM interrupts
The PMU raises a performance monitor exception (causing an interrupt
when MSR[EE]=1) when MMCR0[PMAO] is set, and lowers it when clear.
Wire this up and implement the interrupt delivery for books. Linux perf
record can now collect PMI-driven samples.
fire_PMC_interrupt is renamed to perfm_alert, which matches a bit closer
to the new terminology used in the ISA and distinguishes the alert
condition (e.g., counter overflow) from the PERFM (or EBB) interrupts.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <20230530134313.387252-2-npiggin@gmail.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Diffstat (limited to 'target/ppc/excp_helper.c')
| -rw-r--r-- | target/ppc/excp_helper.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/target/ppc/excp_helper.c b/target/ppc/excp_helper.c index befa9aa..8b95410 100644 --- a/target/ppc/excp_helper.c +++ b/target/ppc/excp_helper.c @@ -1543,6 +1543,7 @@ static void powerpc_excp_books(PowerPCCPU *cpu, int excp) case POWERPC_EXCP_ISEG: /* Instruction segment exception */ case POWERPC_EXCP_TRACE: /* Trace exception */ case POWERPC_EXCP_SDOOR: /* Doorbell interrupt */ + case POWERPC_EXCP_PERFM: /* Performance monitor interrupt */ break; case POWERPC_EXCP_HISI: /* Hypervisor instruction storage exception */ msr |= env->error_code; @@ -1585,7 +1586,6 @@ static void powerpc_excp_books(PowerPCCPU *cpu, int excp) */ return; case POWERPC_EXCP_THERM: /* Thermal interrupt */ - case POWERPC_EXCP_PERFM: /* Embedded performance monitor interrupt */ case POWERPC_EXCP_VPUA: /* Vector assist exception */ case POWERPC_EXCP_MAINT: /* Maintenance exception */ case POWERPC_EXCP_HV_MAINT: /* Hypervisor Maintenance exception */ |