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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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| .. | ||
| asm | ||
| linux | ||
| .gitignore | ||
| copy_mc_64.S | ||
| copy_tofrom_user_reference.S | ||
| copyuser_64.S | ||
| copyuser_power7.S | ||
| exc_validate.c | ||
| Makefile | ||
| mem_64.S | ||
| memcpy_64.S | ||
| memcpy_power7.S | ||
| memcpy_stubs.S | ||
| memmove_validate.c | ||
| settings | ||
| stubs.S | ||
| validate.c | ||