linux-kernel - [PATCH RFC v2 27/27] arm64: mte: Enable dynamic tag storage reuse

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Date:   Sun, 19 Nov 2023 16:57:21 +0000
From:   Alexandru Elisei <alexandru.elisei@....com>
To:     catalin.marinas@....com, will@...nel.org, oliver.upton@...ux.dev,
        maz@...nel.org, james.morse@....com, suzuki.poulose@....com,
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Cc:     pcc@...gle.com, steven.price@....com, anshuman.khandual@....com,
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Subject: [PATCH RFC v2 27/27] arm64: mte: Enable dynamic tag storage reuse

Everything is in place, enable tag storage management.

Signed-off-by: Alexandru Elisei <alexandru.elisei@....com>
---
 arch/arm64/kernel/mte_tag_storage.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/arm64/kernel/mte_tag_storage.c b/arch/arm64/kernel/mte_tag_storage.c
index 11961587382d..9f60e952a814 100644
--- a/arch/arm64/kernel/mte_tag_storage.c
+++ b/arch/arm64/kernel/mte_tag_storage.c
@@ -395,6 +395,9 @@ static int __init mte_tag_storage_activate_regions(void)
 
 	reserve_tag_storage(ZERO_PAGE(0), 0, GFP_HIGHUSER_MOVABLE);
 
+	static_branch_enable(&tag_storage_enabled_key);
+	pr_info("MTE tag storage region management enabled");
+
 	return 0;
 
 out_disabled:
-- 
2.42.1