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[RFC,37/37] arm64: mte: Enable tag storage management

Message ID 20230823131350.114942-38-alexandru.elisei@arm.com (mailing list archive)
State New, archived
Headers show
Series [RFC,01/37] mm: page_alloc: Rename gfp_to_alloc_flags_cma -> gfp_to_alloc_flags_fast | expand

Commit Message

Alexandru Elisei Aug. 23, 2023, 1:13 p.m. UTC 
Everything is in place, enable tag storage management.

Signed-off-by: Alexandru Elisei <alexandru.elisei@arm.com>
---
 arch/arm64/kernel/mte_tag_storage.c | 6 ++++++
 1 file changed, 6 insertions(+)
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Patch

diff --git a/arch/arm64/kernel/mte_tag_storage.c b/arch/arm64/kernel/mte_tag_storage.c
index 1ccbcc144979..18264bc8f590 100644
--- a/arch/arm64/kernel/mte_tag_storage.c
+++ b/arch/arm64/kernel/mte_tag_storage.c
@@ -399,6 +399,12 @@  static int __init mte_tag_storage_activate_regions(void)
 	}
 
 	ret = reserve_metadata_storage(ZERO_PAGE(0), 0, GFP_HIGHUSER_MOVABLE);
+	if (ret) {
+		pr_info("MTE tag storage disabled");
+	} else {
+		static_branch_enable(&metadata_storage_enabled_key);
+		pr_info("MTE tag storage enabled\n");
+	}
 
 	return ret;
 }