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acpi: Put CPPC workaround behind i386/amd64 if def

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While CPPC is available on arm64 platforms with ACPI we don't know if we
need to work around issues with firmware there.
This commit is contained in:
Tom Jones 2022-10-11 09:30:34 +01:00
parent bab2efd47b
commit eee0f7aea4
1 changed files with 4 additions and 0 deletions
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4
sys/dev/acpica/acpi_cpu.c
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@ -153,7 +153,9 @@ static struct sysctl_ctx_list cpu_sysctl_ctx;
static struct sysctl_oid *cpu_sysctl_tree;
static int cpu_cx_generic;
static int cpu_cx_lowest_lim;
#if defined(__i386__) || defined(__amd64__)
static bool cppc_notify;
#endif
static struct acpi_cpu_softc **cpu_softc;
ACPI_SERIAL_DECL(cpu, "ACPI CPU");
@ -985,11 +987,13 @@ acpi_cpu_startup(void *arg)
NULL, 0, acpi_cpu_global_cx_lowest_sysctl, "A",
"Global lowest Cx sleep state to use");
#if defined(__i386__) || defined(__amd64__)
/* Add sysctl handler to control registering for CPPC notifications */
cppc_notify = 1;
SYSCTL_ADD_BOOL(&cpu_sysctl_ctx, SYSCTL_CHILDREN(cpu_sysctl_tree),
OID_AUTO, "cppc_notify", CTLFLAG_RDTUN | CTLFLAG_MPSAFE,
&cppc_notify, 0, "Register for CPPC Notifications");
#endif
/* Take over idling from cpu_idle_default(). */
cpu_cx_lowest_lim = 0;