linux-kernel - [tip: x86/boot] decompress: Use 8 byte alignment

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Date:   Tue, 08 Aug 2023 08:44:00 -0000
From:   "tip-bot2 for Ard Biesheuvel" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Ard Biesheuvel <ardb@...nel.org>,
        "Borislav Petkov (AMD)" <bp@...en8.de>, x86@...nel.org,
        linux-kernel@...r.kernel.org
Subject: [tip: x86/boot] decompress: Use 8 byte alignment

The following commit has been merged into the x86/boot branch of tip:

Commit-ID:     8217ad0a435ff06d651d7298ea8ae8d72388179e
Gitweb:        https://git.kernel.org/tip/8217ad0a435ff06d651d7298ea8ae8d72388179e
Author:        Ard Biesheuvel <ardb@...nel.org>
AuthorDate:    Mon, 07 Aug 2023 18:27:15 +02:00
Committer:     Borislav Petkov (AMD) <bp@...en8.de>
CommitterDate: Mon, 07 Aug 2023 20:55:27 +02:00

decompress: Use 8 byte alignment

The ZSTD decompressor requires malloc() allocations to be 8 byte
aligned, so ensure that this the case.

Signed-off-by: Ard Biesheuvel <ardb@...nel.org>
Signed-off-by: Borislav Petkov (AMD) <bp@...en8.de>
Link: https://lore.kernel.org/r/20230807162720.545787-19-ardb@kernel.org
---
 include/linux/decompress/mm.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/decompress/mm.h b/include/linux/decompress/mm.h
index 9192986..ac86242 100644
--- a/include/linux/decompress/mm.h
+++ b/include/linux/decompress/mm.h
@@ -48,7 +48,7 @@ MALLOC_VISIBLE void *malloc(int size)
 	if (!malloc_ptr)
 		malloc_ptr = free_mem_ptr;
 
-	malloc_ptr = (malloc_ptr + 3) & ~3;     /* Align */
+	malloc_ptr = (malloc_ptr + 7) & ~7;     /* Align */
 
 	p = (void *)malloc_ptr;
 	malloc_ptr += size;