forked from Minki/linux
powerpc/mm/radix: Use different RTS encoding for different POWER9 revs
POWER9 DD1 uses RTS - 28 for the RTS value but other revisions use RTS - 31. This makes this distinction for the different revisions Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Acked-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
parent
7dccfbc325
commit
694c495192
@ -233,14 +233,19 @@ static inline unsigned long radix__get_tree_size(void)
|
||||
{
|
||||
unsigned long rts_field;
|
||||
/*
|
||||
* we support 52 bits, hence 52-31 = 21, 0b10101
|
||||
* We support 52 bits, hence:
|
||||
* DD1 52-28 = 24, 0b11000
|
||||
* Others 52-31 = 21, 0b10101
|
||||
* RTS encoding details
|
||||
* bits 0 - 3 of rts -> bits 6 - 8 unsigned long
|
||||
* bits 4 - 5 of rts -> bits 62 - 63 of unsigned long
|
||||
*/
|
||||
rts_field = (0x5UL << 5); /* 6 - 8 bits */
|
||||
rts_field |= (0x2UL << 61);
|
||||
|
||||
if (cpu_has_feature(CPU_FTR_POWER9_DD1))
|
||||
rts_field = (0x3UL << 61);
|
||||
else {
|
||||
rts_field = (0x5UL << 5); /* 6 - 8 bits */
|
||||
rts_field |= (0x2UL << 61);
|
||||
}
|
||||
return rts_field;
|
||||
}
|
||||
#endif /* __ASSEMBLY__ */
|
||||
|
Loading…
Reference in New Issue
Block a user