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powerpc/mm/radix: Remove unnecessary ptesync 

For a tlbiel with pid, we need to issue tlbiel with set number encoded. We
don't need to do ptesync for each of those. Instead we need one for the entire
tlbiel pid operation.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Acked-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
zero-colors
Aneesh Kumar K.V 2017-04-01 20:11:48 +05:30 committed by Michael Ellerman
parent f6b0df55ca
commit f7327e0ba3
1 changed files with 2 additions and 2 deletions
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4
arch/powerpc/mm/tlb-radix.c
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@ -34,10 +34,8 @@ static inline void __tlbiel_pid(unsigned long pid, int set,
prs = 1; /* process scoped */
r = 1; /* raidx format */
asm volatile("ptesync": : :"memory");
asm volatile(PPC_TLBIEL(%0, %4, %3, %2, %1)
: : "r"(rb), "i"(r), "i"(prs), "i"(ric), "r"(rs) : "memory");
asm volatile("ptesync": : :"memory");
}
/*
@ -47,9 +45,11 @@ static inline void _tlbiel_pid(unsigned long pid, unsigned long ric)
{
int set;
asm volatile("ptesync": : :"memory");
for (set = 0; set < POWER9_TLB_SETS_RADIX ; set++) {
__tlbiel_pid(pid, set, ric);
}
asm volatile("ptesync": : :"memory");
asm volatile(PPC_INVALIDATE_ERAT "; isync" : : :"memory");
}