AuxXxilium/linux_dsm_epyc7002
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Catalin Marinas ffb9a77d0a arm64: mte: Map hotplugged memory as Normal Tagged 
commit d15dfd31384ba3cb93150e5f87661a76fa419f74 upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-03-17 17:06:28 +01:00
..
acpi
asm-generic
clocksource
crypto crypto - shash: reduce minimum alignment of shash_desc structure 2021-03-09 11:11:13 +01:00
drm
dt-bindings
keys
kunit
kvm
linux arm64: mte: Map hotplugged memory as Normal Tagged 2021-03-17 17:06:28 +01:00
math-emu
media media: rc: compile rc-cec.c into rc-core 2021-03-17 17:06:20 +01:00
memory
misc
net Bluetooth: Add new HCI_QUIRK_NO_SUSPEND_NOTIFIER quirk 2021-03-07 12:34:10 +01:00
pcmcia
ras
rdma
scsi
soc
sound ALSA: hda: intel-nhlt: verify config type 2021-03-09 11:11:14 +01:00
target scsi: target: core: Add cmd length set before cmd complete 2021-03-17 17:06:25 +01:00
trace
uapi net: l2tp: reduce log level of messages in receive path, add counter instead 2021-03-17 17:06:11 +01:00
vdso
video
xen