/* * acpi_drivers.h ($Revision: 31 $) * * Copyright (C) 2001, 2002 Andy Grover * Copyright (C) 2001, 2002 Paul Diefenbaugh * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or (at * your option) any later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #ifndef __ACPI_DRIVERS_H__ #define __ACPI_DRIVERS_H__ #define ACPI_MAX_STRING 80 /* * Please update drivers/acpi/debug.c and Documentation/acpi/debug.txt * if you add to this list. */ #define ACPI_BUS_COMPONENT 0x00010000 #define ACPI_AC_COMPONENT 0x00020000 #define ACPI_BATTERY_COMPONENT 0x00040000 #define ACPI_BUTTON_COMPONENT 0x00080000 #define ACPI_SBS_COMPONENT 0x00100000 #define ACPI_FAN_COMPONENT 0x00200000 #define ACPI_PCI_COMPONENT 0x00400000 #define ACPI_POWER_COMPONENT 0x00800000 #define ACPI_CONTAINER_COMPONENT 0x01000000 #define ACPI_SYSTEM_COMPONENT 0x02000000 #define ACPI_THERMAL_COMPONENT 0x04000000 #define ACPI_MEMORY_DEVICE_COMPONENT 0x08000000 #define ACPI_VIDEO_COMPONENT 0x10000000 #define ACPI_PROCESSOR_COMPONENT 0x20000000 /* * _HID definitions * HIDs must conform to ACPI spec(6.1.4) * Linux specific HIDs do not apply to this and begin with LNX: */ #define ACPI_POWER_HID "LNXPOWER" #define ACPI_PROCESSOR_OBJECT_HID "LNXCPU" #define ACPI_SYSTEM_HID "LNXSYSTM" #define ACPI_THERMAL_HID "LNXTHERM" #define ACPI_BUTTON_HID_POWERF "LNXPWRBN" #define ACPI_BUTTON_HID_SLEEPF "LNXSLPBN" #define ACPI_VIDEO_HID "LNXVIDEO" #define ACPI_BAY_HID "LNXIOBAY" #define ACPI_DOCK_HID "LNXDOCK" /* Quirk for broken IBM BIOSes */ #define ACPI_SMBUS_IBM_HID "SMBUSIBM" /* * For fixed hardware buttons, we fabricate acpi_devices with HID * ACPI_BUTTON_HID_POWERF or ACPI_BUTTON_HID_SLEEPF. Fixed hardware * signals only an event; it doesn't supply a notification value. * To allow drivers to treat notifications from fixed hardware the * same as those from real devices, we turn the events into this * notification value. */ #define ACPI_FIXED_HARDWARE_EVENT 0x100 /* -------------------------------------------------------------------------- PCI -------------------------------------------------------------------------- */ /* ACPI PCI Interrupt Link (pci_link.c) */ int acpi_irq_penalty_init(void); int acpi_pci_link_allocate_irq(acpi_handle handle, int index, int *triggering, int *polarity, char **name); int acpi_pci_link_free_irq(acpi_handle handle); /* ACPI PCI Device Binding (pci_bind.c) */ struct pci_bus; struct pci_dev *acpi_get_pci_dev(acpi_handle); /* Arch-defined function to add a bus to the system */ struct pci_bus *pci_acpi_scan_root(struct acpi_pci_root *root); #ifdef CONFIG_X86 void pci_acpi_crs_quirks(void); #else static inline void pci_acpi_crs_quirks(void) { } #endif /* -------------------------------------------------------------------------- Processor -------------------------------------------------------------------------- */ #define ACPI_PROCESSOR_LIMIT_NONE 0x00 #define ACPI_PROCESSOR_LIMIT_INCREMENT 0x01 #define ACPI_PROCESSOR_LIMIT_DECREMENT 0x02 /*-------------------------------------------------------------------------- Dock Station -------------------------------------------------------------------------- */ #ifdef CONFIG_ACPI_DOCK extern int is_dock_device(struct acpi_device *adev); #else static inline int is_dock_device(struct acpi_device *adev) { return 0; } #endif /* CONFIG_ACPI_DOCK */ #endif /*__ACPI_DRIVERS_H__*/ ary='commit info' class='commit-info'> authorBorislav Petkov <bp@suse.de>2017-01-20 21:29:40 +0100 committerThomas Gleixner <tglx@linutronix.de>2017-01-23 09:39:55 +0100 commitc26665ab5c49ad3e142e0f054ca3204f259ba09c (patch) tree3bab11918e18e9d25ef7544dba05cdf39d1abec5 /net parent7a308bb3016f57e5be11a677d15b821536419d36 (diff)
x86/microcode/intel: Drop stashed AP patch pointer optimization
This was meant to save us the scanning of the microcode containter in the initrd since the first AP had already done that but it can also hurt us: Imagine a single hyperthreaded CPU (Intel(R) Atom(TM) CPU N270, for example) which updates the microcode on the BSP but since the microcode engine is shared between the two threads, the update on CPU1 doesn't happen because it has already happened on CPU0 and we don't find a newer microcode revision on CPU1. Which doesn't set the intel_ucode_patch pointer and at initrd jettisoning time we don't save the microcode patch for later application. Now, when we suspend to RAM, the loaded microcode gets cleared so we need to reload but there's no patch saved in the cache. Removing the optimization fixes this issue and all is fine and dandy. Fixes: 06b8534cb728 ("x86/microcode: Rework microcode loading") Signed-off-by: Borislav Petkov <bp@suse.de> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/20170120202955.4091-2-bp@alien8.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'net')