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MIPS: Avoid using array as parameter to write_c0_kpgd()

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Passing an array (swapper_pg_dir) as the argument to write_c0_kpgd() in
setup_pw() will become problematic if we modify __write_64bit_c0_split()
to cast its val argument to unsigned long long, because for 32-bit
kernel builds the size of a pointer will differ from the size of an
unsigned long long. This would fall foul of gcc's pointer-to-int-cast
diagnostic.

Cast the value to a long, which should be the same width as the pointer
that we ultimately want & will be sign extended if required to the
unsigned long long that __write_64bit_c0_split() ultimately needs.

Signed-off-by: Paul Burton <paul.burton@mips.com>
This commit is contained in:
Paul Burton 2018-08-06 18:18:52 -07:00
parent ee67855ecd
commit b023a93960
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1 changed files with 1 additions and 1 deletions
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arch/mips/mm/tlbex.c
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@ -1509,7 +1509,7 @@ static void setup_pw(void)
#ifdef CONFIG_MIPS_HUGE_TLB_SUPPORT
write_c0_pwctl(1 << 6 | psn);
#endif
write_c0_kpgd(swapper_pg_dir);
write_c0_kpgd((long)swapper_pg_dir);
kscratch_used_mask |= (1 << 7); /* KScratch6 is used for KPGD */
}