powerpc/mm: Add missing global TLB invalidate if cxl is active
authorFrederic Barrat <fbarrat@linux.vnet.ibm.com>
Wed, 29 Mar 2017 17:19:42 +0000 (19:19 +0200)
committerMichael Ellerman <mpe@ellerman.id.au>
Wed, 5 Apr 2017 12:13:37 +0000 (22:13 +1000)
commit88b1bf7268f56887ca88eb09c6fb0f4fc970121a
tree4a591bf18abbf55e167d8e4e1e78d3d8a644a14d
parent8f5f525d5b83f7d76a6baf9c4e94d4bf312ea7f6
powerpc/mm: Add missing global TLB invalidate if cxl is active

Commit 4c6d9acce1f4 ("powerpc/mm: Add hooks for cxl") converted local
TLB invalidates to global if the cxl driver is active. This is necessary
because the CAPP snoops invalidations to forward them to the PSL on the
cxl adapter. However one path was forgotten. native_flush_hash_range()
still does local TLB invalidates, as found out the hard way recently.

This patch fixes it by following the same logic as previously: if the
cxl driver is active, the local TLB invalidates are 'upgraded' to
global.

Fixes: 4c6d9acce1f4 ("powerpc/mm: Add hooks for cxl")
Cc: stable@vger.kernel.org # v3.18+
Signed-off-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com>
Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
arch/powerpc/mm/hash_native_64.c