linux-kernel - [PATCH v2] KVM: x86/mmu: Use kstrtobool() instead of strtobool()

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Date:   Sat, 14 Jan 2023 10:39:11 +0100
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     Sean Christopherson <seanjc@...gle.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org,
        "H. Peter Anvin" <hpa@...or.com>
Cc:     linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        kvm@...r.kernel.org
Subject: [PATCH v2] KVM: x86/mmu: Use kstrtobool() instead of strtobool()

strtobool() is the same as kstrtobool().
However, the latter is more used within the kernel.

In order to remove strtobool() and slightly simplify kstrtox.h, switch to
the other function name.

While at it, include the corresponding header file (<linux/kstrtox.h>)

Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
This patch was already sent as a part of a serie ([1]) that axed all usages
of strtobool().
Most of the patches have been merged in -next.

I synch'ed with latest -next and re-send the remaining ones as individual
patches.

Changes in v2:
  - synch with latest -next.

[1]: https://lore.kernel.org/all/cover.1667336095.git.christophe.jaillet@wanadoo.fr/
---
 arch/x86/kvm/mmu/mmu.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c
index 9c7198544195..699f7eac5070 100644
--- a/arch/x86/kvm/mmu/mmu.c
+++ b/arch/x86/kvm/mmu/mmu.c
@@ -43,6 +43,7 @@
 #include <linux/uaccess.h>
 #include <linux/hash.h>
 #include <linux/kern_levels.h>
+#include <linux/kstrtox.h>
 #include <linux/kthread.h>
 
 #include <asm/page.h>
@@ -6752,7 +6753,7 @@ static int set_nx_huge_pages(const char *val, const struct kernel_param *kp)
 		new_val = 1;
 	else if (sysfs_streq(val, "auto"))
 		new_val = get_nx_auto_mode();
-	else if (strtobool(val, &new_val) < 0)
+	else if (kstrtobool(val, &new_val) < 0)
 		return -EINVAL;
 
 	__set_nx_huge_pages(new_val);
-- 
2.34.1