linux_dsm_epyc7002/drivers/firmware
Matthew Garrett a5c03c31af x86/efi: Clarify that reset attack mitigation needs appropriate userspace
Some distributions have turned on the reset attack mitigation feature,
which is designed to force the platform to clear the contents of RAM if
the machine is shut down uncleanly. However, in order for the platform
to be able to determine whether the shutdown was clean or not, userspace
has to be configured to clear the MemoryOverwriteRequest flag on
shutdown - otherwise the firmware will end up clearing RAM on every
reboot, which is unnecessarily time consuming. Add some additional
clarity to the kconfig text to reduce the risk of systems being
configured this way.

Signed-off-by: Matthew Garrett <mjg59@google.com>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-efi@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: stable@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2018-01-19 09:17:41 +01:00
..
broadcom tree-wide: replace config_enabled() with IS_ENABLED() 2016-08-04 08:50:07 -04:00
efi x86/efi: Clarify that reset attack mitigation needs appropriate userspace 2018-01-19 09:17:41 +01:00
google firmware: vpd: Fix platform driver and device registration/unregistration 2017-11-28 16:57:18 +01:00
meson firmware: meson-sm: Allow 0 as valid return value 2017-03-23 12:22:40 -07:00
tegra ARM: SoC driver updates for v4.15 2017-11-16 16:05:01 -08:00
arm_scpi.c firmware: arm_scpi: Revert updates made during v4.15 merge window 2017-12-03 19:39:22 -08:00
dcdbas.c firmware/dcdbas: Constify attribute_group structures 2017-08-21 09:43:51 +02:00
dcdbas.h dcdbas: export functionality for use in other drivers 2009-01-08 08:31:12 -08:00
dell_rbu.c sysfs: add struct file* to bin_attr callbacks 2010-05-21 09:37:31 -07:00
dmi_scan.c firmware: dmi_scan: Check DMI structure length 2017-06-15 13:46:01 +02:00
dmi-id.c firmware: dmi: Fix permissions of product_family 2017-06-15 13:46:01 +02:00
dmi-sysfs.c x86, mpparse, x86/acpi, x86/PCI, x86/dmi, SFI: Use memremap() for RAM mappings 2017-07-18 11:37:58 +02:00
edd.c [SCSI] edd: Treat "XPRS" host bus type the same as "PCI" 2011-10-31 13:26:19 +04:00
iscsi_ibft_find.c efi: Make 'efi_enabled' a function to query EFI facilities 2013-01-30 11:51:59 -08:00
iscsi_ibft.c ibft: Expose iBFT acpi header via sysfs 2016-05-16 11:14:29 -04:00
Kconfig firmware: qcom: scm: Expose download-mode control 2017-10-11 23:48:27 -05:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
memmap.c drivers/firmware/memmap.c: fix kernel-doc format 2015-06-25 17:00:41 -07:00
pcdp.c x86, mpparse, x86/acpi, x86/PCI, x86/dmi, SFI: Use memremap() for RAM mappings 2017-07-18 11:37:58 +02:00
pcdp.h Update broken web addresses in the kernel. 2010-10-18 11:03:14 +02:00
psci_checker.c drivers/firmware: psci: Convert timers to use timer_setup() 2017-11-21 15:46:44 -08:00
psci.c firmware: Convert to using %pOF instead of full_name 2017-08-16 17:19:50 +02:00
qcom_scm-32.c remoteproc updates for v4.15 2017-11-17 20:14:10 -08:00
qcom_scm-64.c remoteproc updates for v4.15 2017-11-17 20:14:10 -08:00
qcom_scm.c remoteproc updates for v4.15 2017-11-17 20:14:10 -08:00
qcom_scm.h remoteproc updates for v4.15 2017-11-17 20:14:10 -08:00
qemu_fw_cfg.c fw_cfg: fix driver remove 2017-12-01 16:55:09 +02:00
raspberrypi.c ARM: bcm2835: Add the Raspberry Pi firmware driver 2015-10-14 15:30:06 -07:00
scpi_pm_domain.c firmware: scpi: add device power domain support using genpd 2016-06-21 10:26:51 +01:00
ti_sci.c ti_sci: Use %pS printk format for direct addresses 2017-10-09 09:54:14 -07:00
ti_sci.h firmware: ti_sci: Add support for reboot core service 2016-10-27 12:09:12 +03:00