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From: Juergen Gross <jgross@suse.com>
To: linux-kernel@vger.kernel.org, x86@kernel.org
Cc: lists@nerdbynature.de, mikelley@microsoft.com,
	torvalds@linux-foundation.org, Juergen Gross <jgross@suse.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
	Dave Hansen <dave.hansen@linux.intel.com>,
	"H. Peter Anvin" <hpa@zytor.com>
Subject: [PATCH 1/6] x86/mtrr: make mtrr_enabled() non-static
Date: Tue,  7 Feb 2023 08:28:57 +0100	[thread overview]
Message-ID: <20230207072902.5528-2-jgross@suse.com> (raw)
In-Reply-To: <20230207072902.5528-1-jgross@suse.com>

In order to be able to use mtrr_enabled() outside of MTRR code, make
it non-static and add a sub for the !CONFIG_MTRR case.

Signed-off-by: Juergen Gross <jgross@suse.com>
---
 arch/x86/include/asm/mtrr.h     | 6 ++++++
 arch/x86/kernel/cpu/mtrr/mtrr.c | 2 +-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/arch/x86/include/asm/mtrr.h b/arch/x86/include/asm/mtrr.h
index f0eeaf6e5f5f..29ec2d6f0537 100644
--- a/arch/x86/include/asm/mtrr.h
+++ b/arch/x86/include/asm/mtrr.h
@@ -31,6 +31,7 @@
  */
 # ifdef CONFIG_MTRR
 void mtrr_bp_init(void);
+bool mtrr_enabled(void);
 extern u8 mtrr_type_lookup(u64 addr, u64 end, u8 *uniform);
 extern void mtrr_save_fixed_ranges(void *);
 extern void mtrr_save_state(void);
@@ -48,6 +49,11 @@ void mtrr_disable(void);
 void mtrr_enable(void);
 void mtrr_generic_set_state(void);
 #  else
+static inline bool mtrr_enabled(void)
+{
+	return false;
+}
+
 static inline u8 mtrr_type_lookup(u64 addr, u64 end, u8 *uniform)
 {
 	/*
diff --git a/arch/x86/kernel/cpu/mtrr/mtrr.c b/arch/x86/kernel/cpu/mtrr/mtrr.c
index 783f3210d582..814cc13fd6eb 100644
--- a/arch/x86/kernel/cpu/mtrr/mtrr.c
+++ b/arch/x86/kernel/cpu/mtrr/mtrr.c
@@ -59,7 +59,7 @@
 #define MTRR_TO_PHYS_WC_OFFSET 1000
 
 u32 num_var_ranges;
-static bool mtrr_enabled(void)
+bool mtrr_enabled(void)
 {
 	return !!mtrr_if;
 }
-- 
2.35.3


  reply	other threads:[~2023-02-07  7:29 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-02-07  7:28 [PATCH 0/6] x86/mtrr: fix handling with PAT but without MTRR Juergen Gross
2023-02-07  7:28 ` Juergen Gross [this message]
2023-02-07  7:28 ` [PATCH 2/6] x86/pat: check for MTRRs enabled in memtype_reserve() Juergen Gross
2023-02-07  8:49   ` Ingo Molnar
2023-02-07  9:12     ` Juergen Gross
2023-02-07 11:31   ` Borislav Petkov
2023-02-07  7:28 ` [PATCH 3/6] x86/mtrr: revert commit 90b926e68f50 Juergen Gross
2023-02-07  7:29 ` [PATCH 4/6] x86/mtrr: don't let mtrr_type_lookup() return MTRR_TYPE_INVALID Juergen Gross
2023-02-07 16:20   ` Linus Torvalds
2023-02-08  6:20     ` Juergen Gross
2023-02-08 15:42       ` Linus Torvalds
2023-02-07  7:29 ` [PATCH 5/6] x86/mm: only check uniform after calling mtrr_type_lookup() Juergen Gross
2023-02-07 11:42   ` Borislav Petkov
2023-02-07 11:54     ` Juergen Gross
2023-02-07 12:21       ` Borislav Petkov
2023-02-08  1:13     ` Kani, Toshi
2023-02-07  7:29 ` [PATCH 6/6] x86/mtrr: drop sanity check in mtrr_type_lookup_fixed() Juergen Gross
2023-02-08 15:08 ` [PATCH 0/6] x86/mtrr: fix handling with PAT but without MTRR Michael Kelley (LINUX)
2023-02-08 15:19   ` Juergen Gross

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