kernel_optimize_test/arch/riscv/mm
Atish Patra e1b2ecb562 RISC-V: Set current memblock limit
[ Upstream commit abb8e86b269604e906a6a4af7a09f04b72dbb862 ]

Currently, linux kernel can not use last 4k bytes of addressable space
because IS_ERR_VALUE macro treats those as an error. This will be an issue
for RV32 as any memblock allocator potentially allocate chunk of memory
from the end of DRAM (2GB) leading bad address error even though the
address was technically valid.

Fix this issue by limiting the memblock if available memory spans the
entire address space.

Reviewed-by: Anup Patel <anup@brainfault.org>
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-01-27 11:55:04 +01:00
..
cacheflush.c mm: reorder includes after introduction of linux/pgtable.h 2020-06-09 09:39:13 -07:00
context.c riscv: add nommu support 2019-11-17 15:17:39 -08:00
extable.c riscv: abstract out CSR names for supervisor vs machine mode 2019-11-05 09:20:42 -08:00
fault.c riscv: fix pfn_to_virt err in do_page_fault(). 2020-11-05 21:13:44 -08:00
hugetlbpage.c hugetlbfs: remove hugetlb_add_hstate() warning for existing hstate 2020-06-03 20:09:46 -07:00
init.c RISC-V: Set current memblock limit 2021-01-27 11:55:04 +01:00
kasan_init.c riscv: Fix KASAN memory mapping. 2021-01-19 18:27:20 +01:00
Makefile riscv: Allow building with kcov coverage 2020-07-30 11:37:35 -07:00
pageattr.c riscv: fix build warning of mm/pageattr 2020-07-30 11:37:50 -07:00
physaddr.c riscv: mm: add support for CONFIG_DEBUG_VIRTUAL 2020-01-23 10:40:06 -08:00
ptdump.c RISC-V: Add page table dump support for uefi 2020-10-02 14:31:33 -07:00
tlbflush.c RISC-V: Issue a tlb page flush if possible 2019-10-29 11:32:18 -07:00