| Message ID | 20210820125042.1844629-1-tongtiangen@huawei.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | riscv: Fix two vdso issue | expand |
On 2021/8/20 20:50, Tong Tiangen wrote: > v2->v1: > Add patch "Refactor asm/vdso.h" to avoid vdso.lds syntax error if > CONFIG_GENERIC_TIME_VSYSCALL=n. This is better than v1. > > 1) Refactor the asm/vdso.h to avoid vdso.lds syntax error. > > 2) Move vdso data page up front Move vdso data page before code page could save the problem which the .text section could be bigger than PAGE_SIZE. > and introduce enum vvar_pages, To pave the > way for the subsequent support of TIME_NS, the support of TIME_NS will be > issued in the later patch. This makes it easier to introduce new features TIME_NS. > > 3) In arch_setup_additional_pages(), make Wait for the lock in the > killable mode and return with EINTR if the task got killed while waiting. For series, Reviewed-by: Kefeng Wang <wangkefeng.wang@huawei.com> > Tong Tiangen (3): > riscv/vdso: Refactor asm/vdso.h > riscv/vdso: Move vdso data page up front > riscv/vdso: make arch_setup_additional_pages wait for mmap_sem for > write killable > > arch/riscv/include/asm/syscall.h | 1 + > arch/riscv/include/asm/vdso.h | 10 ++---- > arch/riscv/kernel/syscall_table.c | 1 - > arch/riscv/kernel/vdso.c | 53 +++++++++++++++++++------------ > arch/riscv/kernel/vdso/vdso.lds.S | 3 +- > 5 files changed, 39 insertions(+), 29 deletions(-) >
v2->v1: Add patch "Refactor asm/vdso.h" to avoid vdso.lds syntax error if CONFIG_GENERIC_TIME_VSYSCALL=n. 1) Refactor the asm/vdso.h to avoid vdso.lds syntax error. 2) Move vdso data page up front and introduce enum vvar_pages, To pave the way for the subsequent support of TIME_NS, the support of TIME_NS will be issued in the later patch. 3) In arch_setup_additional_pages(), make Wait for the lock in the killable mode and return with EINTR if the task got killed while waiting. Tong Tiangen (3): riscv/vdso: Refactor asm/vdso.h riscv/vdso: Move vdso data page up front riscv/vdso: make arch_setup_additional_pages wait for mmap_sem for write killable arch/riscv/include/asm/syscall.h | 1 + arch/riscv/include/asm/vdso.h | 10 ++---- arch/riscv/kernel/syscall_table.c | 1 - arch/riscv/kernel/vdso.c | 53 +++++++++++++++++++------------ arch/riscv/kernel/vdso/vdso.lds.S | 3 +- 5 files changed, 39 insertions(+), 29 deletions(-)