linux-kernel - [PATCH AUTOSEL 5.14 08/21] habanalabs: fix mmu node address resolution in debugfs

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Message-Id: <20210917023315.816225-8-sashal@kernel.org>
Date:   Thu, 16 Sep 2021 22:33:02 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Yuri Nudelman <ynudelman@...ana.ai>,
        Oded Gabbay <ogabbay@...nel.org>,
        Sasha Levin <sashal@...nel.org>, Arnd@...r.kernel.org,
        gregkh@...uxfoundation.org, ttayar@...ana.ai, mhaimovski@...ana.ai,
        obitton@...ana.ai
Subject: [PATCH AUTOSEL 5.14 08/21] habanalabs: fix mmu node address resolution in debugfs

From: Yuri Nudelman <ynudelman@...ana.ai>

[ Upstream commit 09ae43043c748423a5dcdc7bb1e63e4dcabe9bd6 ]

The address resolution via debugfs was not taking into consideration the
page offset, resulting in a wrong address.

Signed-off-by: Yuri Nudelman <ynudelman@...ana.ai>
Reviewed-by: Oded Gabbay <ogabbay@...nel.org>
Signed-off-by: Oded Gabbay <ogabbay@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/misc/habanalabs/common/debugfs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/misc/habanalabs/common/debugfs.c b/drivers/misc/habanalabs/common/debugfs.c
index 703d79fb6f3f..379529bffc70 100644
--- a/drivers/misc/habanalabs/common/debugfs.c
+++ b/drivers/misc/habanalabs/common/debugfs.c
@@ -349,7 +349,7 @@ static int mmu_show(struct seq_file *s, void *data)
 		return 0;
 	}
 
-	phys_addr = hops_info.hop_info[hops_info.used_hops - 1].hop_pte_val;
+	hl_mmu_va_to_pa(ctx, virt_addr, &phys_addr);
 
 	if (hops_info.scrambled_vaddr &&
 		(dev_entry->mmu_addr != hops_info.scrambled_vaddr))
-- 
2.30.2