[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-ppc] [PATCH 4/4] spapr: Add RTAS sysparm SPLPAR Characteristics
From: |
Sam Bobroff |
Subject: |
[Qemu-ppc] [PATCH 4/4] spapr: Add RTAS sysparm SPLPAR Characteristics |
Date: |
Tue, 24 Jun 2014 10:22:54 +1000 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Icedove/24.5.0 |
Add support for the SPLPAR Characteristics parameter to the emulated
RTAS call ibm,get-system-parameter.
The support provides just enough information to allow "cat
/proc/powerpc/lparcfg" to succeed without generating a kernel error
message.
Without this patch the above command will produce the following kernel
message: arch/powerpc/platforms/pseries/lparcfg.c \
parse_system_parameter_string Error calling get-system-parameter \
(0xfffffffd)
Signed-off-by: Sam Bobroff <address@hidden>
---
hw/ppc/spapr_rtas.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/hw/ppc/spapr_rtas.c b/hw/ppc/spapr_rtas.c
index 8d94845..4270e7a 100644
--- a/hw/ppc/spapr_rtas.c
+++ b/hw/ppc/spapr_rtas.c
@@ -224,6 +224,7 @@ static void rtas_stop_self(PowerPCCPU *cpu,
sPAPREnvironment *spapr,
env->msr = 0;
}
+#define SPLPAR_CHARACTERISTICS 20
#define DIAGNOSTICS_RUN_MODE 42
#define UUID 48
@@ -238,8 +239,20 @@ static void rtas_ibm_get_system_parameter(PowerPCCPU *cpu,
target_ulong length = rtas_ld(args, 2);
target_ulong ret = RTAS_OUT_SUCCESS;
uint8_t zero = 0;
+ uint8_t param_buf[64];
+ int param_len;
switch (parameter) {
+ case SPLPAR_CHARACTERISTICS:
+ param_len = snprintf((char *)param_buf, sizeof param_buf,
+ "MaxEntCap=%d,MaxPlatProcs=%d",
+ max_cpus, smp_cpus);
+ if (param_len >= 0) {
+ rtas_st_buffer(buffer, length, param_buf, param_len);
+ } else {
+ ret = RTAS_OUT_HW_ERROR;
+ }
+ break;
case DIAGNOSTICS_RUN_MODE:
rtas_st_buffer(buffer, length, &zero, sizeof zero);
break;
--
1.9.0
- [Qemu-ppc] [PATCH 4/4] spapr: Add RTAS sysparm SPLPAR Characteristics,
Sam Bobroff <=