linux-kernel - [PATCH 6/7] habanalabs: align armcp

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Message-Id: <20200616061327.12006-6-oded.gabbay@gmail.com>
Date:   Tue, 16 Jun 2020 09:13:26 +0300
From:   Oded Gabbay <oded.gabbay@...il.com>
To:     linux-kernel@...r.kernel.org, SW_Drivers@...ana.ai
Cc:     gregkh@...uxfoundation.org
Subject: [PATCH 6/7] habanalabs: align armcp_packet structure to 8 bytes

Once there is a 64-bit field in a structure, GCC compiler for ARM aligns
the structure to 8 bytes. In order to avoid confusion when these
structures are being passed between CPUs from different architectures, we
explicitly align the structure to 8 bytes.

Signed-off-by: Oded Gabbay <oded.gabbay@...il.com>
---
 drivers/misc/habanalabs/include/armcp_if.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/misc/habanalabs/include/armcp_if.h b/drivers/misc/habanalabs/include/armcp_if.h
index a34fc39ad87e..dea7c90faafa 100644
--- a/drivers/misc/habanalabs/include/armcp_if.h
+++ b/drivers/misc/habanalabs/include/armcp_if.h
@@ -276,6 +276,8 @@ struct armcp_packet {
 		/* For get Armcp info/EEPROM data */
 		__le32 data_max_size;
 	};
+
+	__le32 reserved;
 };
 
 struct armcp_unmask_irq_arr_packet {
-- 
2.17.1