linux-kernel - [PATCH] x86: fixmap: use CONFIG_NR_CPUS instead of NR

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20210521195918.2183-1-rdunlap@infradead.org>
Date:   Fri, 21 May 2021 12:59:18 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     linux-kernel@...r.kernel.org
Cc:     Randy Dunlap <rdunlap@...radead.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        x86@...nel.org, Mel Gorman <mgorman@...hsingularity.net>
Subject: [PATCH] x86: fixmap: use CONFIG_NR_CPUS instead of NR_CPUS

Use CONFIG_NR_CPUS instead of NR_CPUS for an enum entry item.
(Alternatively, #include <linux/threads.h> unconditionally instead of
conditionally.)

This fixes 100+ build errors like so:

In file included from ../include/asm-generic/early_ioremap.h:6:0,
                 from ./arch/x86/include/generated/asm/early_ioremap.h:1,
                 from ../arch/x86/include/asm/io.h:44,
                 from ../include/linux/io.h:13,
                 from ../mm/early_ioremap.c:13:
../arch/x86/include/asm/fixmap.h:103:48: error: ‘NR_CPUS’ undeclared here (not in a function); did you mean ‘NR_OPEN’?
  FIX_KMAP_END = FIX_KMAP_BEGIN + (KM_MAX_IDX * NR_CPUS) - 1,

Fixes: e972c2511967 ("mm/early_ioremap: add prototype for early_memremap_pgprot_adjust")
Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: Borislav Petkov <bp@...en8.de>
Cc: x86@...nel.org
Cc: Mel Gorman <mgorman@...hsingularity.net>
---
 arch/x86/include/asm/fixmap.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- linux-next-20210521.orig/arch/x86/include/asm/fixmap.h
+++ linux-next-20210521/arch/x86/include/asm/fixmap.h
@@ -100,7 +100,7 @@ enum fixed_addresses {
 #endif
 #ifdef CONFIG_KMAP_LOCAL
 	FIX_KMAP_BEGIN,	/* reserved pte's for temporary kernel mappings */
-	FIX_KMAP_END = FIX_KMAP_BEGIN + (KM_MAX_IDX * NR_CPUS) - 1,
+	FIX_KMAP_END = FIX_KMAP_BEGIN + (KM_MAX_IDX * CONFIG_NR_CPUS) - 1,
 #ifdef CONFIG_PCI_MMCONFIG
 	FIX_PCIE_MCFG,
 #endif