Ard Biesheuvel a509a66a9d arm64: permit ACPI core to map kernel memory used for table overrides ... Jonathan reports that the strict policy for memory mapped by the ACPI core breaks the use case of passing ACPI table overrides via initramfs. This is due to the fact that the memory type used for loading the initramfs in memory is not recognized as a memory type that is typically used by firmware to pass firmware tables. Since the purpose of the strict policy is to ensure that no AML or other ACPI code can manipulate any memory that is used by the kernel to keep its internal state or the state of user tasks, we can relax the permission check, and allow mappings of memory that is reserved and marked as NOMAP via memblock, and therefore not covered by the linear mapping to begin with. Fixes: 1583052d11 ("arm64/acpi: disallow AML memory opregions to access kernel memory") Fixes: 325f5585ec ("arm64/acpi: disallow writeable AML opregion mapping for EFI code regions") Reported-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Tested-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Cc: Sudeep Holla <sudeep.holla@arm.com> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Link: https://lore.kernel.org/r/20200929132522.18067-1-ardb@kernel.org Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>		2020-09-30 22:27:51 +01:00
..
acpi	ACPI updates for 5.9-rc1	2020-08-03 20:37:22 -07:00
asm-generic	iomap: constify ioreadX() iomem argument (as in generic implementation)	2020-08-14 19:56:57 -07:00
clocksource	include/: replace HTTP links with HTTPS ones	2020-08-12 10:57:59 -07:00
crypto	mm, treewide: rename kzfree() to kfree_sensitive()	2020-08-07 11:33:22 -07:00
drm	Linux 5.9-rc2	2020-08-25 11:00:02 +02:00
dt-bindings	Here's some more updates that missed the last pull request because I	2020-08-12 12:19:49 -07:00
keys	It's been a busy cycle for documentation - hopefully the busiest for a	2020-08-04 22:47:54 -07:00
kunit
kvm
linux	arm64: permit ACPI core to map kernel memory used for table overrides	2020-09-30 22:27:51 +01:00
math-emu	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
media	media updates for v5.9-rc1	2020-08-07 13:00:53 -07:00
memory
misc	ocxl: Address kernel doc errors & warnings	2020-07-29 23:47:52 +10:00
net	ipv6: some fixes for ipv6_dev_find()	2020-08-18 15:58:53 -07:00
pcmcia
ras
rdma	RDMA 5.9 merge window pull request	2020-08-06 16:43:36 -07:00
scsi
soc	include/: replace HTTP links with HTTPS ones	2020-08-12 10:57:59 -07:00
sound	ALSA: hda: Add dma stop delay variable	2020-08-05 12:27:47 +02:00
target	scsi: target: Make iscsit_register_transport() return void	2020-08-04 20:56:56 -04:00
trace	powerpc fixes for 5.9 #4	2020-08-30 10:56:12 -07:00
uapi	Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf	2020-08-21 12:54:50 -07:00
vdso	lib/vdso: Allow to add architecture-specific vdso data	2020-08-06 10:57:30 +02:00
video
xen	xen: branch for v5.9-rc3	2020-08-29 12:44:30 -07:00