linux-kernel - [PATCH v3 02/10] x86/mtrr: remove unused cyrix_set

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Message-Id: <20220908084914.21703-3-jgross@suse.com>
Date:   Thu,  8 Sep 2022 10:49:06 +0200
From:   Juergen Gross <jgross@...e.com>
To:     xen-devel@...ts.xenproject.org, x86@...nel.org,
        linux-kernel@...r.kernel.org
Cc:     Juergen Gross <jgross@...e.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        "H. Peter Anvin" <hpa@...or.com>
Subject: [PATCH v3 02/10] x86/mtrr: remove unused cyrix_set_all() function

The Cyrix CPU specific MTRR function cyrix_set_all() will never be
called, as the struct mtrr_ops set_all() callback will only be called
in the use_intel() case, which would require the use_intel_if member
of struct mtrr_ops to be set, which isn't the case for Cyrix.

Signed-off-by: Juergen Gross <jgross@...e.com>
---
V2:
- new patch
---
 arch/x86/kernel/cpu/mtrr/cyrix.c | 34 --------------------------------
 1 file changed, 34 deletions(-)

diff --git a/arch/x86/kernel/cpu/mtrr/cyrix.c b/arch/x86/kernel/cpu/mtrr/cyrix.c
index ca670919b561..c77d3b0a5bf2 100644
--- a/arch/x86/kernel/cpu/mtrr/cyrix.c
+++ b/arch/x86/kernel/cpu/mtrr/cyrix.c
@@ -234,42 +234,8 @@ static void cyrix_set_arr(unsigned int reg, unsigned long base,
 	post_set();
 }
 
-typedef struct {
-	unsigned long	base;
-	unsigned long	size;
-	mtrr_type	type;
-} arr_state_t;
-
-static arr_state_t arr_state[8] = {
-	{0UL, 0UL, 0UL}, {0UL, 0UL, 0UL}, {0UL, 0UL, 0UL}, {0UL, 0UL, 0UL},
-	{0UL, 0UL, 0UL}, {0UL, 0UL, 0UL}, {0UL, 0UL, 0UL}, {0UL, 0UL, 0UL}
-};
-
-static unsigned char ccr_state[7] = { 0, 0, 0, 0, 0, 0, 0 };
-
-static void cyrix_set_all(void)
-{
-	int i;
-
-	prepare_set();
-
-	/* the CCRs are not contiguous */
-	for (i = 0; i < 4; i++)
-		setCx86(CX86_CCR0 + i, ccr_state[i]);
-	for (; i < 7; i++)
-		setCx86(CX86_CCR4 + i, ccr_state[i]);
-
-	for (i = 0; i < 8; i++) {
-		cyrix_set_arr(i, arr_state[i].base,
-			      arr_state[i].size, arr_state[i].type);
-	}
-
-	post_set();
-}
-
 static const struct mtrr_ops cyrix_mtrr_ops = {
 	.vendor            = X86_VENDOR_CYRIX,
-	.set_all	   = cyrix_set_all,
 	.set               = cyrix_set_arr,
 	.get               = cyrix_get_arr,
 	.get_free_region   = cyrix_get_free_region,
-- 
2.35.3