Hi, For patches to arm64, please CC the arm64 maintainers, and the linux-arm-kernel mailing list.
Generally, please try to follow the guidance of Documentation/process/submitting-patches.rst e.g. you can use get_maintainer.pl to figure out who to Cc: [mark@lakrids:~/src/linux]% ./scripts/get_maintainer.pl arch/arm64/mm/mmu.c Catalin Marinas <[email protected]> (maintainer:ARM64 PORT (AARCH64 ARCHITECTURE),commit_signer:8/16=50%) Will Deacon <[email protected]> (maintainer:ARM64 PORT (AARCH64 ARCHITECTURE),commit_signer:9/16=56%,authored:6/16=38%,added_lines:205/242=85%,removed_lines:142/157=90%) Ard Biesheuvel <[email protected]> (commit_signer:5/16=31%) Marc Zyngier <[email protected]> (commit_signer:4/16=25%) Dan Williams <[email protected]> (commit_signer:2/16=12%) Kristina Martsenko <[email protected]> (authored:2/16=12%) James Morse <[email protected]> (authored:2/16=12%) Tobias Klauser <[email protected]> (authored:1/16=6%) Steve Capper <[email protected]> (authored:1/16=6%) [email protected] (moderated list:ARM64 PORT (AARCH64 ARCHITECTURE)) [email protected] (open list) Thanks, Mark. On Tue, May 29, 2018 at 05:16:09PM +0800, YaoJun wrote: > To prevent KSMA(Kernel Space Mirroring Attack), it's necessary > to set tramp_pg_dir read-only after initialization. > > --- > arch/arm64/mm/mmu.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/arch/arm64/mm/mmu.c b/arch/arm64/mm/mmu.c > index 2dbb2c9f1ec1..964520e4e675 100644 > --- a/arch/arm64/mm/mmu.c > +++ b/arch/arm64/mm/mmu.c > @@ -551,6 +551,9 @@ static int __init map_entry_trampoline(void) > __create_pgd_mapping(tramp_pg_dir, pa_start, TRAMP_VALIAS, PAGE_SIZE, > prot, pgd_pgtable_alloc, 0); > > + update_mapping_prot(__pa_symbol(tramp_pg_dir), (unsigned > long)tramp_pg_dir, > + PGD_SIZE, PAGE_KERNEL_RO); > + > /* Map both the text and data into the kernel page table */ > __set_fixmap(FIX_ENTRY_TRAMP_TEXT, pa_start, prot); > if (IS_ENABLED(CONFIG_RANDOMIZE_BASE)) { > -- > 2.17.0 >
