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Dimitris Vlachos 5941a90c55 riscv: Sparse-Memory/vmemmap out-of-bounds fix [ Upstream commit `a11dd49dcb` ] Offset vmemmap so that the first page of vmemmap will be mapped to the first page of physical memory in order to ensure that vmemmap’s bounds will be respected during pfn_to_page()/page_to_pfn() operations. The conversion macros will produce correct SV39/48/57 addresses for every possible/valid DRAM_BASE inside the physical memory limits. v2:Address Alex's comments Suggested-by: Alexandre Ghiti <alexghiti@rivosinc.com> Signed-off-by: Dimitris Vlachos <dvlachos@ics.forth.gr> Reported-by: Dimitris Vlachos <dvlachos@ics.forth.gr> Closes: https://lore.kernel.org/linux-riscv/20240202135030.42265-1-csd4492@csd.uoc.gr Fixes: `d95f1a542c` ("RISC-V: Implement sparsemem") Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com> Link: https://lore.kernel.org/r/20240229191723.32779-1-dvlachos@ics.forth.gr Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com> Signed-off-by: Sasha Levin <sashal@kernel.org>	History 2024-03-06 14:38:48 +00:00
..
asm	riscv: Sparse-Memory/vmemmap out-of-bounds fix	2024-03-06 14:38:48 +00:00
uapi/asm	riscv: Bump COMMAND_LINE_SIZE value to 1024	2023-03-30 12:47:52 +02:00

Dimitris Vlachos 5941a90c55 riscv: Sparse-Memory/vmemmap out-of-bounds fix

[ Upstream commit a11dd49dcb ]

Offset vmemmap so that the first page of vmemmap will be mapped
to the first page of physical memory in order to ensure that
vmemmap’s bounds will be respected during
pfn_to_page()/page_to_pfn() operations.
The conversion macros will produce correct SV39/48/57 addresses
for every possible/valid DRAM_BASE inside the physical memory limits.

v2:Address Alex's comments

Suggested-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Signed-off-by: Dimitris Vlachos <dvlachos@ics.forth.gr>
Reported-by: Dimitris Vlachos <dvlachos@ics.forth.gr>
Closes: https://lore.kernel.org/linux-riscv/20240202135030.42265-1-csd4492@csd.uoc.gr
Fixes: d95f1a542c ("RISC-V: Implement sparsemem")
Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Link: https://lore.kernel.org/r/20240229191723.32779-1-dvlachos@ics.forth.gr
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

History

2024-03-06 14:38:48 +00:00

asm riscv: Sparse-Memory/vmemmap out-of-bounds fix 2024-03-06 14:38:48 +00:00

uapi/asm riscv: Bump COMMAND_LINE_SIZE value to 1024 2023-03-30 12:47:52 +02:00