diff mbox series

[RFC,v0,2/4] powerpc/prom_init: Ask for Radix GTSE only if supported.

Message ID 20200608104909.14350-3-bharata@linux.ibm.com (mailing list archive)
State Superseded
Headers show
Series Off-load TLB invalidations to host for !GTSE | expand

Checks

Context Check Description
snowpatch_ozlabs/apply_patch success Successfully applied on branch powerpc/merge (ec7b8eb9bc7a519047485c95f7292b48f5b73fe6)
snowpatch_ozlabs/checkpatch success total: 0 errors, 0 warnings, 0 checks, 20 lines checked
snowpatch_ozlabs/needsstable success Patch has no Fixes tags

Commit Message

Bharata B Rao June 8, 2020, 10:49 a.m. UTC 
In the case of radix, don't ask for GTSE by default but ask
only if GTSE is enabled.

Signed-off-by: Bharata B Rao <bharata@linux.ibm.com>
---
 arch/powerpc/kernel/prom_init.c | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)
diff mbox series

Patch

diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index 5f15b10eb007..16dd14f58ba6 100644
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c
@@ -1336,12 +1336,15 @@  static void __init prom_check_platform_support(void)
 		}
 	}
 
-	if (supported.radix_mmu && supported.radix_gtse &&
-	    IS_ENABLED(CONFIG_PPC_RADIX_MMU)) {
-		/* Radix preferred - but we require GTSE for now */
-		prom_debug("Asking for radix with GTSE\n");
+	if (supported.radix_mmu && IS_ENABLED(CONFIG_PPC_RADIX_MMU)) {
+		/* Radix preferred - Check if GTSE is also supported */
+		prom_debug("Asking for radix\n");
 		ibm_architecture_vec.vec5.mmu = OV5_FEAT(OV5_MMU_RADIX);
-		ibm_architecture_vec.vec5.radix_ext = OV5_FEAT(OV5_RADIX_GTSE);
+		if (supported.radix_gtse)
+			ibm_architecture_vec.vec5.radix_ext =
+					OV5_FEAT(OV5_RADIX_GTSE);
+		else
+			prom_debug("Radix GTSE isn't supported\n");
 	} else if (supported.hash_mmu) {
 		/* Default to hash mmu (if we can) */
 		prom_debug("Asking for hash\n");