linux-kernel - [PATCH v1 1/2] x86/cpuid: Remove obsolete CPUID(0x2) iteration macro

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Message-ID: <20250411070401.1358760-2-darwi@linutronix.de>
Date: Fri, 11 Apr 2025 09:04:00 +0200
From: "Ahmed S. Darwish" <darwi@...utronix.de>
To: Ingo Molnar <mingo@...hat.com>,
	Borislav Petkov <bp@...en8.de>,
	Dave Hansen <dave.hansen@...ux.intel.com>
Cc: Thomas Gleixner <tglx@...utronix.de>,
	Andrew Cooper <andrew.cooper3@...rix.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	John Ogness <john.ogness@...utronix.de>,
	x86@...nel.org,
	x86-cpuid@...ts.linux.dev,
	LKML <linux-kernel@...r.kernel.org>,
	"Ahmed S. Darwish" <darwi@...utronix.de>
Subject: [PATCH v1 1/2] x86/cpuid: Remove obsolete CPUID(0x2) iteration macro

The CPUID(0x2) cache descriptors iterator at <cpuid/leaf_0x2_api.h>:

    for_each_leaf_0x2_desc()

has no more call sites.  Remove it.

Fixes: 4772304ee651 ("x86/cpu: Use consolidated CPUID leaf 0x2 descriptor table")
Signed-off-by: Ahmed S. Darwish <darwi@...utronix.de>
---
 arch/x86/include/asm/cpuid/leaf_0x2_api.h | 23 -----------------------
 1 file changed, 23 deletions(-)

diff --git a/arch/x86/include/asm/cpuid/leaf_0x2_api.h b/arch/x86/include/asm/cpuid/leaf_0x2_api.h
index 46ecb15e92d9..09fa3070b271 100644
--- a/arch/x86/include/asm/cpuid/leaf_0x2_api.h
+++ b/arch/x86/include/asm/cpuid/leaf_0x2_api.h
@@ -40,29 +40,6 @@ static inline void cpuid_get_leaf_0x2_regs(union leaf_0x2_regs *regs)
 	}
 }
 
-/**
- * for_each_leaf_0x2_desc() - Iterator for CPUID leaf 0x2 descriptors
- * @regs:	Leaf 0x2 output, as returned by cpuid_get_leaf_0x2_regs()
- * @desc:	Pointer to the returned descriptor for each iteration
- *
- * Loop over the 1-byte descriptors in the passed leaf 0x2 output registers
- * @regs.  Provide each descriptor through @desc.
- *
- * Note that the first byte is skipped as it is not a descriptor.
- *
- * Sample usage::
- *
- *	union leaf_0x2_regs regs;
- *	u8 *desc;
- *
- *	cpuid_get_leaf_0x2_regs(&regs);
- *	for_each_leaf_0x2_desc(regs, desc) {
- *		// Handle *desc value
- *	}
- */
-#define for_each_leaf_0x2_desc(regs, desc)				\
-	for (desc = &(regs).desc[1]; desc < &(regs).desc[16]; desc++)
-
 /**
  * for_each_leaf_0x2_entry() - Iterator for parsed leaf 0x2 descriptors
  * @regs:   Leaf 0x2 register output, returned by cpuid_get_leaf_0x2_regs()
-- 
2.49.0