mirror of https://github.com/torvalds/linux.git
146c9ab38b
The new PowerPC VMX fast path (__copy_tofrom_user_power7_vmx) is not
exercised by existing copyloops selftests. This patch updates
the selftest to exercise the VMX variant, ensuring the VMX copy path
is validated.
Changes include:
- COPY_LOOP=test___copy_tofrom_user_power7_vmx with -D VMX_TEST is used
in existing selftest build targets.
- Inclusion of ../utils.c to provide get_auxv_entry() for hardware
feature detection.
- At runtime, the test skips execution if Altivec is not available.
- Copy sizes above VMX_COPY_THRESHOLD are used to ensure the VMX
path is taken.
This enables validation of the VMX fast path without affecting systems
that do not support Altivec.
Signed-off-by: Sayali Patil <sayalip@linux.ibm.com>
Tested-by: Venkat Rao Bagalkote <venkat88@linux.ibm.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20260304122201.153049-2-sayalip@linux.ibm.com
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| .. | ||
| alignment | ||
| benchmarks | ||
| cache_shape | ||
| copyloops | ||
| dexcr | ||
| dscr | ||
| eeh | ||
| include | ||
| lib | ||
| math | ||
| mce | ||
| mm | ||
| nx-gzip | ||
| papr_attributes | ||
| papr_sysparm | ||
| papr_vpd | ||
| pmu | ||
| primitives | ||
| ptrace | ||
| scripts | ||
| security | ||
| signal | ||
| stringloops | ||
| switch_endian | ||
| syscalls | ||
| tm | ||
| vphn | ||
| Makefile | ||
| flags.mk | ||
| harness.c | ||
| utils.c | ||