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Catalin Marinas da32064cb9 FROMGIT: arm64: mte: Map hotplugged memory as Normal Tagged 
In a system supporting MTE, the linear map must allow reading/writing
allocation tags by setting the memory type as Normal Tagged. Currently,
this is only handled for memory present at boot. Hotplugged memory uses
Normal non-Tagged memory.

Introduce pgprot_mhp() for hotplugged memory and use it in
add_memory_resource(). The arm64 code maps pgprot_mhp() to
pgprot_tagged().

Note that ZONE_DEVICE memory should not be mapped as Tagged and
therefore setting the memory type in arch_add_memory() is not feasible.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Fixes: 0178dc7613 ("arm64: mte: Use Normal Tagged attributes for the linear map")
Reported-by: Patrick Daly <pdaly@codeaurora.org>
Tested-by: Patrick Daly <pdaly@codeaurora.org>
Link: https://lore.kernel.org/r/1614745263-27827-1-git-send-email-pdaly@codeaurora.org
Cc: <stable@vger.kernel.org> # 5.10.x
Cc: Will Deacon <will@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: David Hildenbrand <david@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Link: https://lore.kernel.org/r/20210309122601.5543-1-catalin.marinas@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
(cherry picked from commit d15dfd3138
 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-next/fixes)
Signed-off-by: Will Deacon <willdeacon@google.com>
Bug: 181697456
Change-Id: Id1077c49637d4791fee781dd4c013b112e77ae0d
2021-03-10 11:47:51 +00:00
..
acpi ACPICA: Fix exception code class checks 2021-03-04 11:37:24 +01:00
asm-generic Merge 5.10.20 into android12-5.10 2021-03-07 12:33:33 +01:00
clocksource
crypto UPSTREAM: crypto: blake2b - sync with blake2s implementation 2021-02-23 08:06:20 +01:00
drm This is the 5.10.15 stable release 2021-02-10 09:53:50 +01:00
dt-bindings UPSTREAM: dt-bindings: connector: Add SVDM VDO properties 2021-02-09 11:55:09 +01:00
keys
kunit
kvm FROMGIT: KVM: arm64: Turn kvm_arm_support_pmu_v3() into a static key 2021-03-05 16:45:13 +00:00
linux FROMGIT: arm64: mte: Map hotplugged memory as Normal Tagged 2021-03-10 11:47:51 +00:00
math-emu
media Merge 5.10.4 into android12-5.10 2020-12-30 12:47:03 +01:00
memory
misc
net This is the 5.10.21 stable release 2021-03-07 12:53:30 +01:00
pcmcia
ras
rdma RDMA: Lift ibdev_to_node from rds to common code 2021-02-26 10:12:59 +01:00
scsi
soc net: dsa: felix: implement port flushing on .phylink_mac_link_down 2021-02-17 11:02:27 +01:00
sound
target
trace ANDROID: sched: move vendor hook to check scheduling nice value 2021-03-08 20:01:04 +00:00
uapi This is the 5.10.21 stable release 2021-03-07 12:53:30 +01:00
vdso
video
xen Xen/gntdev: correct error checking in gntdev_map_grant_pages() 2021-02-23 15:53:24 +01:00