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| author |   Xi Ruoyao <xry111@xry111.site> | 2025-04-11 10:46:00 +0800 |
|---|---|---|
| committer |   Palmer Dabbelt <palmer@dabbelt.com> | 2025-06-05 14:03:09 -0700 |
| commit | ee0d03053e7009a3a3532fb37f6c94bfa0a8cca3 (patch) | |
| tree | 34bf27155e35245602344027be5fb8acb7ced1e7 /tools | |
| parent | riscv: enable mseal sysmap for RV64 (diff) | |
| download | linux-rng-ee0d03053e7009a3a3532fb37f6c94bfa0a8cca3.tar.xz linux-rng-ee0d03053e7009a3a3532fb37f6c94bfa0a8cca3.zip | |
RISC-V: vDSO: Wire up getrandom() vDSO implementation
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>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/testing/selftests/vDSO/vgetrandom-chacha.S | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/tools/testing/selftests/vDSO/vgetrandom-chacha.S b/tools/testing/selftests/vDSO/vgetrandom-chacha.S index d6e09af7c0a9..a4a82e1c28a9 100644 --- a/tools/testing/selftests/vDSO/vgetrandom-chacha.S +++ b/tools/testing/selftests/vDSO/vgetrandom-chacha.S @@ -11,6 +11,8 @@ #include "../../../../arch/loongarch/vdso/vgetrandom-chacha.S" #elif defined(__powerpc__) || defined(__powerpc64__) #include "../../../../arch/powerpc/kernel/vdso/vgetrandom-chacha.S" +#elif defined(__riscv) && __riscv_xlen == 64 +#include "../../../../arch/riscv/kernel/vdso/vgetrandom-chacha.S" #elif defined(__s390x__) #include "../../../../arch/s390/kernel/vdso64/vgetrandom-chacha.S" #elif defined(__x86_64__) |