linux_dsm_epyc7002/arch/arm64
Mark Salter 0ceac9e094 efi/arm64: Fix fdt-related memory reservation
Commit 86c8b27a01:
 "arm64: ignore DT memreserve entries when booting in UEFI mode

prevents early_init_fdt_scan_reserved_mem() from being called for
arm64 kernels booting via UEFI. This was done because the kernel
will use the UEFI memory map to determine reserved memory regions.
That approach has problems in that early_init_fdt_scan_reserved_mem()
also reserves the FDT itself and any node-specific reserved memory.
By chance of some kernel configs, the FDT may be overwritten before
it can be unflattened and the kernel will fail to boot. More subtle
problems will result if the FDT has node specific reserved memory
which is not really reserved.

This patch has the UEFI stub remove the memory reserve map entries
from the FDT as it does with the memory nodes. This allows
early_init_fdt_scan_reserved_mem() to be called unconditionally
so that the other needed reservations are made.

Signed-off-by: Mark Salter <msalter@redhat.com>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
2014-09-09 07:51:09 +01:00
..
boot dts: Add bindings for APM X-Gene SoC ethernet driver 2014-08-11 11:50:33 -07:00
configs arm64: configs: Enable X-Gene SATA and ethernet in defconfig 2014-08-19 19:26:09 +01:00
crypto arm64 updates for 3.17 2014-08-04 12:31:53 -07:00
include arm64: mm: update max pa bits to 48 2014-08-19 20:23:02 +01:00
kernel Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-08-24 16:17:41 -07:00
kvm arm64: KVM: fix 64bit CP15 VM access for 32bit guests 2014-08-01 14:05:06 +02:00
lib arm64: lib: Implement optimized string length routines 2014-05-23 15:17:12 +01:00
mm efi/arm64: Fix fdt-related memory reservation 2014-09-09 07:51:09 +01:00
xen arm: xen: implement multicall hypercall support. 2014-04-24 13:09:46 +01:00
Kconfig lib/scatterlist: make ARCH_HAS_SG_CHAIN an actual Kconfig 2014-08-08 15:57:26 -07:00
Kconfig.debug arm64: Enable TEXT_OFFSET fuzzing 2014-07-10 12:36:58 +01:00
Makefile arm64: align randomized TEXT_OFFSET on 4 kB boundary 2014-08-19 19:26:09 +01:00