diff options
Diffstat (limited to 'drivers/acpi/bus.c')
| -rw-r--r-- | drivers/acpi/bus.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c index 569bd15f211b..621bd43c2a8a 100644 --- a/drivers/acpi/bus.c +++ b/drivers/acpi/bus.c @@ -298,6 +298,13 @@ EXPORT_SYMBOL_GPL(osc_sb_native_usb4_support_confirmed); bool osc_sb_cppc2_support_acked; +/* + * ACPI 6.? Proposed Operating System Capabilities for modifying CPU + * present/enable. + */ +bool osc_sb_hotplug_enabled_support_acked; +bool osc_sb_hotplug_present_support_acked; + static u8 sb_uuid_str[] = "0811B06E-4A27-44F9-8D60-3CBBC22E7B48"; static void acpi_bus_osc_negotiate_platform_control(void) { @@ -346,6 +353,11 @@ static void acpi_bus_osc_negotiate_platform_control(void) if (!ghes_disable) capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_APEI_SUPPORT; + + capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_HOTPLUG_ENABLED_SUPPORT; + if (IS_ENABLED(CONFIG_ACPI_HOTPLUG_PRESENT_CPU)) + capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_HOTPLUG_PRESENT_SUPPORT; + if (ACPI_FAILURE(acpi_get_handle(NULL, "\\_SB", &handle))) return; @@ -383,6 +395,10 @@ static void acpi_bus_osc_negotiate_platform_control(void) capbuf_ret[OSC_SUPPORT_DWORD] & OSC_SB_NATIVE_USB4_SUPPORT; osc_cpc_flexible_adr_space_confirmed = capbuf_ret[OSC_SUPPORT_DWORD] & OSC_SB_CPC_FLEXIBLE_ADR_SPACE; + osc_sb_hotplug_enabled_support_acked = + capbuf_ret[OSC_SUPPORT_DWORD] & OSC_SB_HOTPLUG_ENABLED_SUPPORT; + osc_sb_hotplug_present_support_acked = + capbuf_ret[OSC_SUPPORT_DWORD] & OSC_SB_HOTPLUG_PRESENT_SUPPORT; } kfree(context.ret.pointer); |