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| author | Alexandre Ghiti <alex@ghiti.fr> | 2021-07-26 07:42:54 +0200 |
|---|---|---|
| committer | Palmer Dabbelt <palmerdabbelt@google.com> | 2021-08-12 07:16:58 -0700 |
| commit | fdf3a7a1e0a67a52f631b055975c6ac7e0e49a65 (patch) | |
| tree | 7963d4954e0e4e725080ec92216aeb45684b0f59 /arch | |
| parent | 030d6dbf0c2e5fdf23ad29557f0c87a882993e26 (diff) | |
| download | lwn-fdf3a7a1e0a67a52f631b055975c6ac7e0e49a65.tar.gz lwn-fdf3a7a1e0a67a52f631b055975c6ac7e0e49a65.zip | |
riscv: Fix comment regarding kernel mapping overlapping with IS_ERR_VALUE
The current comment states that we check if the 64-bit kernel mapping
overlaps with the last 4K of the address space that is reserved to
error values in create_kernel_page_table, which is not the case since it
is done in setup_vm. But anyway, remove the reference to any function
and simply note that in 64-bit kernel, the check should be done as soon
as the kernel mapping base address is known.
Fixes: db6b84a368b4 ("riscv: Make sure the kernel mapping does not overlap with IS_ERR_VALUE")
Signed-off-by: Alexandre Ghiti <alex@ghiti.fr>
Cc: stable@vger.kernel.org
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/riscv/mm/init.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c index 88134cc288d9..7cb4f391d106 100644 --- a/arch/riscv/mm/init.c +++ b/arch/riscv/mm/init.c @@ -197,7 +197,7 @@ static void __init setup_bootmem(void) * if end of dram is equal to maximum addressable memory. For 64-bit * kernel, this problem can't happen here as the end of the virtual * address space is occupied by the kernel mapping then this check must - * be done in create_kernel_page_table. + * be done as soon as the kernel mapping base address is determined. */ max_mapped_addr = __pa(~(ulong)0); if (max_mapped_addr == (phys_ram_end - 1)) |