linux-kernel - [tip: x86/tdx] x86/kaslr: Fix build warning in KASLR code in boot stub

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Message-ID: <164966337460.4207.1566995074602468595.tip-bot2@tip-bot2>
Date:   Mon, 11 Apr 2022 07:49:34 -0000
From:   "tip-bot2 for Kirill A. Shutemov" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Borislav Petkov <bp@...e.de>,
        "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
        x86@...nel.org, linux-kernel@...r.kernel.org
Subject: [tip: x86/tdx] x86/kaslr: Fix build warning in KASLR code in boot stub

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

Commit-ID:     adb5680b8dfdd09756f13450bfc1ed874d895935
Gitweb:        https://git.kernel.org/tip/adb5680b8dfdd09756f13450bfc1ed874d895935
Author:        Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>
AuthorDate:    Sun, 10 Apr 2022 23:00:25 +03:00
Committer:     Borislav Petkov <bp@...e.de>
CommitterDate: Mon, 11 Apr 2022 09:41:12 +02:00

x86/kaslr: Fix build warning in KASLR code in boot stub

lib/kaslr.c is used by both the main kernel and the boot stub. It
includes asm/io.h which is supposed to be used in the main kernel. It
leads to build warnings like this with clang 13:

  warning: implicit declaration of function 'outl' is invalid in C99 [-Wimplicit-function-declaration]

Replace <asm/io.h> with <asm/shared/io.h> which is suitable for both
cases.

Fixes: 1e8f93e18379 ("x86: Consolidate port I/O helpers")
Reported-by: Borislav Petkov <bp@...e.de>
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>
Signed-off-by: Borislav Petkov <bp@...e.de>
Link: https://lore.kernel.org/r/20220410200025.3stf4jjvwfe5oxew@box.shutemov.name
---
 arch/x86/lib/kaslr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/lib/kaslr.c b/arch/x86/lib/kaslr.c
index 2b3eb8c..a58f451 100644
--- a/arch/x86/lib/kaslr.c
+++ b/arch/x86/lib/kaslr.c
@@ -11,7 +11,7 @@
 #include <asm/msr.h>
 #include <asm/archrandom.h>
 #include <asm/e820/api.h>
-#include <asm/io.h>
+#include <asm/shared/io.h>
 
 /*
  * When built for the regular kernel, several functions need to be stubbed out