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Message-Id: <20200419203336.731736462@linutronix.de>
Date: Sun, 19 Apr 2020 22:31:48 +0200
From: Thomas Gleixner <tglx@...utronix.de>
To: LKML <linux-kernel@...r.kernel.org>
Cc: x86@...nel.org, Kees Cook <keescook@...omium.org>,
Paolo Bonzini <pbonzini@...hat.com>,
Thomas Lendacky <Thomas.Lendacky@....com>,
Juergen Gross <jgross@...e.com>,
Boris Ostrovsky <boris.ostrovsky@...cle.com>
Subject: [patch 11/15] x86/tlb: Move cr4_set_bits_and_update_boot() to the usage site
No point in having this exposed.
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
---
arch/x86/include/asm/tlbflush.h | 14 --------------
arch/x86/mm/init.c | 13 +++++++++++++
2 files changed, 13 insertions(+), 14 deletions(-)
--- a/arch/x86/include/asm/tlbflush.h
+++ b/arch/x86/include/asm/tlbflush.h
@@ -332,23 +332,9 @@ static inline void cr4_clear_bits(unsign
local_irq_restore(flags);
}
-/*
- * Save some of cr4 feature set we're using (e.g. Pentium 4MB
- * enable and PPro Global page enable), so that any CPU's that boot
- * up after us can get the correct flags. This should only be used
- * during boot on the boot cpu.
- */
extern unsigned long mmu_cr4_features;
extern u32 *trampoline_cr4_features;
-static inline void cr4_set_bits_and_update_boot(unsigned long mask)
-{
- mmu_cr4_features |= mask;
- if (trampoline_cr4_features)
- *trampoline_cr4_features = mmu_cr4_features;
- cr4_set_bits(mask);
-}
-
extern void initialize_tlbstate_and_flush(void);
/*
--- a/arch/x86/mm/init.c
+++ b/arch/x86/mm/init.c
@@ -172,6 +172,19 @@ struct map_range {
static int page_size_mask;
+/*
+ * Save some of cr4 feature set we're using (e.g. Pentium 4MB
+ * enable and PPro Global page enable), so that any CPU's that boot
+ * up after us can get the correct flags. Invoked on the boot CPU.
+ */
+static inline void cr4_set_bits_and_update_boot(unsigned long mask)
+{
+ mmu_cr4_features |= mask;
+ if (trampoline_cr4_features)
+ *trampoline_cr4_features = mmu_cr4_features;
+ cr4_set_bits(mask);
+}
+
static void __init probe_page_size_mask(void)
{
/*
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