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ahunter6KAGA-KOKO
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vdso: Fix powerpc build U64_MAX undeclared error
U64_MAX is not in include/vdso/limits.h, although that isn't noticed on x86 because x86 includes include/linux/limits.h indirectly. However powerpc is more selective, resulting in the following build error: In file included from <command-line>: lib/vdso/gettimeofday.c: In function 'vdso_calc_ns': lib/vdso/gettimeofday.c:11:33: error: 'U64_MAX' undeclared 11 | # define VDSO_DELTA_MASK(vd) U64_MAX | ^~~~~~~ Use ULLONG_MAX instead which will work just as well and is in include/vdso/limits.h. Fixes: c8e3a8b ("vdso: Consolidate vdso_calc_delta()") Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/r/20240409062639.3393-1-adrian.hunter@intel.com Closes: https://lore.kernel.org/all/20240409124905.6816db37@canb.auug.org.au/
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lib/vdso/gettimeofday.c

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@@ -8,7 +8,7 @@
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#ifndef vdso_calc_ns
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#ifdef VDSO_DELTA_NOMASK
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# define VDSO_DELTA_MASK(vd) U64_MAX
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# define VDSO_DELTA_MASK(vd) ULLONG_MAX
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#else
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# define VDSO_DELTA_MASK(vd) (vd->mask)
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#endif

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