[PATCH 13/16] powerpc/mm/pseries: Use HASH_PROTECT hcall in guest
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STALE3264d
From: Aneesh Kumar K.V <hidden>
Date: 2017-10-27 04:10:01
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Linus Torvalds
Signed-off-by: Aneesh Kumar K.V <redacted> --- arch/powerpc/platforms/pseries/lpar.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c
index 52d2e3038c05..cd5cf5bd53f1 100644
--- a/arch/powerpc/platforms/pseries/lpar.c
+++ b/arch/powerpc/platforms/pseries/lpar.c@@ -388,15 +388,20 @@ static long pSeries_lpar_hash_updatepp(unsigned long hash, unsigned long want_v; want_v = hpte_encode_avpn(vpn, psize, ssize); - pr_devel(" update: avpnv=%016lx, hash=%016lx, f=%lx, psize: %d ...", want_v, hash, flags, psize); + if (firmware_has_feature(FW_FEATURE_HASH_API)) { + lpar_rc = plpar_pte_hash_protect(flags, hash, want_v); + goto err_out; + } slot = __pSeries_lpar_hpte_find(hash, want_v); if (slot < 0) return -1; lpar_rc = plpar_pte_protect(flags, slot, want_v); + +err_out: if (lpar_rc == H_NOT_FOUND) { pr_devel("not found !\n"); return -1;
--
2.13.6