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| author | Maciej W. Rozycki <macro@orcam.me.uk> | 2026-03-30 02:54:09 +0100 |
|---|---|---|
| committer | Thomas Bogendoerfer <tsbogend@alpha.franken.de> | 2026-04-01 21:53:18 +0200 |
| commit | ec8bf18814915460d9c617b556bf024efef26613 (patch) | |
| tree | 181bc1b288fbe1557f628d035a5080ee2a541ad6 /include/asm-arm/git@git.tavy.me:linux.git | |
| parent | d62cf1511743526f530a4c169424e50c757f5a5e (diff) | |
MIPS: Fix the GCC version check for `__multi3' workaround
It was only GCC 10 that fixed a MIPS64r6 code generation issue with a
`__multi3' libcall inefficiently produced to perform 64-bit widening
multiplication while suitable machine instructions exist to do such a
calculation. The fix went in with GCC commit 48b2123f6336 ("re PR
target/82981 (unnecessary __multi3 call for mips64r6 linux kernel)").
Adjust our code accordingly, removing build failures such as:
mips64-linux-ld: lib/math/div64.o: in function `mul_u64_add_u64_div_u64':
div64.c:(.text+0x84): undefined reference to `__multi3'
with the GCC versions affected.
Fixes: ebabcf17bcd7 ("MIPS: Implement __multi3 for GCC7 MIPS64r6 builds")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202601140146.hMLODc6v-lkp@intel.com/
Signed-off-by: Maciej W. Rozycki <macro@orcam.me.uk>
Cc: stable@vger.kernel.org # v4.15+
Reviewed-by: David Laight <david.laight.linux@gmail.com.
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Diffstat (limited to 'include/asm-arm/git@git.tavy.me:linux.git')
0 files changed, 0 insertions, 0 deletions
