On 24.06.14 02:22, Sam Bobroff wrote:
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 <sam.bobr...@au1.ibm.com>
---
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);
We have a nice g_strdup_printf() helper function that allocates memory
for us automatically based on the printf size. Just use that one here ;).
Alex
