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spapr: Add RTAS sysparm SPLPAR Characteristics 

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.bobroff@au1.ibm.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Sam bobroff 2014-06-25 13:54:32 +10:00 committed by Alexander Graf
parent b907d7b0fd
commit 3b50d8974b
2 changed files with 9 additions and 0 deletions
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8
hw/ppc/spapr_rtas.c
View File

@ -234,6 +234,13 @@ static void rtas_ibm_get_system_parameter(PowerPCCPU *cpu,
target_ulong ret = RTAS_OUT_SUCCESS;
switch (parameter) {
case RTAS_SYSPARM_SPLPAR_CHARACTERISTICS: {
char *param_val = g_strdup_printf("MaxEntCap=%d,MaxPlatProcs=%d",
max_cpus, smp_cpus);
rtas_st_buffer(buffer, length, (uint8_t *)param_val, strlen(param_val));
g_free(param_val);
break;
}
case RTAS_SYSPARM_DIAGNOSTICS_RUN_MODE: {
uint8_t param_val = DIAGNOSTICS_RUN_MODE_DISABLED;
@ -260,6 +267,7 @@ static void rtas_ibm_set_system_parameter(PowerPCCPU *cpu,
target_ulong ret = RTAS_OUT_NOT_SUPPORTED;
switch (parameter) {
case RTAS_SYSPARM_SPLPAR_CHARACTERISTICS:
case RTAS_SYSPARM_DIAGNOSTICS_RUN_MODE:
case RTAS_SYSPARM_UUID:
ret = RTAS_OUT_NOT_AUTHORIZED;

1
include/hw/ppc/spapr.h
View File

@ -398,6 +398,7 @@ static inline int spapr_allocate_lsi(int hint)
#define RTAS_TOKEN_MAX (RTAS_TOKEN_BASE + 0x21)
/* RTAS ibm,get-system-parameter token values */
#define RTAS_SYSPARM_SPLPAR_CHARACTERISTICS 20
#define RTAS_SYSPARM_DIAGNOSTICS_RUN_MODE 42
#define RTAS_SYSPARM_UUID 48