Gavin Shan 9d2d75ede5 arm64/kernel: Fix range on invalidating dcache for boot page tables ... Prior to commit 8eb7e28d4c ("arm64/mm: move runtime pgds to rodata"), idmap_pgd_dir, tramp_pg_dir, reserved_ttbr0, swapper_pg_dir, and init_pg_dir were contiguous at the end of the kernel image. The maintenance at the end of __create_page_tables assumed these were contiguous, and affected everything from the start of idmap_pg_dir to the end of init_pg_dir. That commit moved all but init_pg_dir into the .rodata section, with other data placed between idmap_pg_dir and init_pg_dir, but did not update the maintenance. Hence the maintenance is performed on much more data than necessary (but as the bootloader previously made this clean to the PoC there is no functional problem). As we only alter idmap_pg_dir, and init_pg_dir, we only need to perform maintenance for these. As the other dirs are in .rodata, the bootloader will have initialised them as expected and cleaned them to the PoC. The kernel will initialize them as necessary after enabling the MMU. This patch reworks the maintenance to only cover the idmap_pg_dir and init_pg_dir to avoid this unnecessary work. Signed-off-by: Gavin Shan <gshan@redhat.com> Reviewed-by: Mark Rutland <mark.rutland@arm.com> Link: https://lore.kernel.org/r/20200427235700.112220-1-gshan@redhat.com Signed-off-by: Will Deacon <will@kernel.org>		2020-04-28 14:48:03 +01:00
..
boot	ARM: devicetree updates for v5.7	2020-04-03 15:22:05 -07:00
configs	ARM: defconfig updates	2020-04-03 15:15:10 -07:00
crypto	SPDX patches for 5.7-rc1.	2020-04-03 13:12:26 -07:00
include	arm64/kernel: Fix range on invalidating dcache for boot page tables	2020-04-28 14:48:03 +01:00
kernel	arm64/kernel: Fix range on invalidating dcache for boot page tables	2020-04-28 14:48:03 +01:00
kvm	virtio: fixes, vdpa	2020-04-08 10:51:53 -07:00
lib	arm64: lib: Consistently enable crc32 extension	2020-04-28 14:36:32 +01:00
mm	mm/memory_hotplug: add pgprot_t to mhp_params	2020-04-10 15:36:21 -07:00
net	arm64: bpf: optimize modulo operation	2019-09-03 15:44:40 +02:00
xen	arm64: xen: Use modern annotations for assembly functions	2020-01-09 16:09:42 +00:00
Kbuild	arm64: add arch/arm64/Kbuild	2019-08-21 18:47:15 +01:00
Kconfig	arm64 fixes:	2020-04-09 11:04:16 -07:00
Kconfig.debug	arm64: remove CONFIG_DEBUG_ALIGN_RODATA feature	2020-04-01 21:44:43 +01:00
Kconfig.platforms	ARM: SoC updates	2020-04-03 15:02:35 -07:00
Makefile	arm64: set TEXT_OFFSET to 0x0 in preparation for removing it entirely	2020-04-28 14:38:57 +01:00