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ee0d03053e
Hook up the generic vDSO implementation to the generic vDSO getrandom
implementation by providing the required __arch_chacha20_blocks_nostack
and getrandom_syscall implementations. Also wire up the selftests.
The benchmark result:
vdso: 25000000 times in 2.466341333 seconds
libc: 25000000 times in 41.447720005 seconds
syscall: 25000000 times in 41.043926672 seconds
vdso: 25000000 x 256 times in 162.286219353 seconds
libc: 25000000 x 256 times in 2953.855018685 seconds
syscall: 25000000 x 256 times in 2796.268546000 seconds
[ alex: - Fix dynamic relocation
- Squash Nathan's fix https://lore.kernel.org/all/20250423-riscv-fix-compat_vdso-lld-v2-1-b7bbbc244501@kernel.org/
- Add comment from Loongarch ]
Signed-off-by: Xi Ruoyao <xry111@xry111.site>
Link: https://lore.kernel.org/r/20250411024600.16045-1-xry111@xry111.site
Tested-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Signed-off-by: Palmer Dabbelt <palmer@dabbelt.com>
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| .. | ||
| .gitignore | ||
| Makefile | ||
| parse_vdso.c | ||
| parse_vdso.h | ||
| vdso_call.h | ||
| vdso_config.h | ||
| vdso_standalone_test_x86.c | ||
| vdso_test_abi.c | ||
| vdso_test_chacha.c | ||
| vdso_test_clock_getres.c | ||
| vdso_test_correctness.c | ||
| vdso_test_getcpu.c | ||
| vdso_test_getrandom.c | ||
| vdso_test_gettimeofday.c | ||
| vgetrandom-chacha.S | ||