Will Deacon d91680e687 arm64: Fix /proc/iomem for reserved but not memory regions ... We describe ranges of 'reserved' memory to userspace via /proc/iomem. Commit 50d7ba36b9 ("arm64: export memblock_reserve()d regions via /proc/iomem") updated the logic to export regions that were reserved because their contents should be preserved. This allowed kexec-tools to tell the difference between 'reserved' memory that must be preserved and not overwritten, (e.g. the ACPI tables), and 'nomap' memory that must not be touched without knowing the memory-attributes (e.g. RAS CPER regions). The above commit wrongly assumed that memblock_reserve() would not be used to reserve regions that aren't memory. It turns out this is exactly what early_init_dt_reserve_memory_arch() will do if it finds a DT reserved-memory that was also carved out of the memory node, which results in a WARN_ON_ONCE() and the region being reserved instead of ignored. The ramoops description on hikey and dragonboard-410c both do this, so we can't simply write this configuration off as "buggy firmware". Avoid this issue by rewriting reserve_memblock_reserved_regions() so that only the portions of reserved regions which overlap with mapped memory are actually reserved. Fixes: 50d7ba36b9 ("arm64: export memblock_reserve()d regions via /proc/iomem") Reported-by: John Stultz <john.stultz@linaro.org> Reported-by: Paolo Pisati <p.pisati@gmail.com> CC: Akashi Takahiro <takahiro.akashi@linaro.org> CC: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by: James Morse <james.morse@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>		2018-10-12 15:25:16 +01:00
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boot	arm64: allwinner: dts: h6: fix Pine H64 MMC bus width	2018-08-27 09:21:00 +02:00
configs	arm64: defconfig: Enable TI's AM6 SoC platform	2018-08-29 11:51:26 -07:00
crypto	crypto: arm64/aes-gcm-ce - fix scatterwalk API violation	2018-08-25 19:50:43 +08:00
include	arm64: jump_label.h: use asm_volatile_goto macro instead of "asm goto"	2018-09-11 11:07:11 +01:00
kernel	arm64: Fix /proc/iomem for reserved but not memory regions	2018-10-12 15:25:16 +01:00
kvm	arm64: KVM: Sanitize PSTATE.M when being set from userspace	2018-10-01 14:38:26 +01:00
lib	locking/atomics/arm64: Replace our atomic/lock bitop implementations with asm-generic	2018-06-21 12:52:12 +02:00
mm	arm64: hugetlb: Avoid unnecessary clearing in huge_ptep_set_access_flags	2018-09-24 17:51:50 +01:00
net	bpf, arm64: save 4 bytes in prologue when ebpf insns came from cbpf	2018-05-14 19:11:45 -07:00
xen	arm64: mm: Add additional parameter to uaccess_ttbr0_disable	2018-01-17 13:57:49 +01:00
Kconfig	arm64: mm: always enable CONFIG_HOLES_IN_ZONE	2018-08-31 11:06:45 +01:00
Kconfig.debug	Kconfig: consolidate the "Kernel hacking" menu	2018-08-02 08:06:48 +09:00
Kconfig.platforms	ARM: SoC: late updates	2018-08-25 14:12:36 -07:00
Makefile	kbuild: rename LDFLAGS to KBUILD_LDFLAGS	2018-08-24 08:22:08 +09:00