[tip: x86/cpu] x86/cacheinfo: Constify _cpuid4_info_regs instances

[tip-bot2 for Ahmed S. Darwish]

The following commit has been merged into the x86/cpu branch of tip:

Commit-ID:     7b83e0d2b20b38a025d15ba88516c1b8fe9c6f3d
Gitweb:        https://git.kernel.org/tip/7b83e0d2b20b38a025d15ba88516c1b8fe9c6f3d
Author:        Ahmed S. Darwish <darwi@xxxxxxxxxxxxx>
AuthorDate:    Mon, 24 Mar 2025 14:33:03 +01:00
Committer:     Ingo Molnar <mingo@xxxxxxxxxx>
CommitterDate: Tue, 25 Mar 2025 10:22:23 +01:00

x86/cacheinfo: Constify _cpuid4_info_regs instances

_cpuid4_info_regs instances are passed through a large number of
functions at cacheinfo.c.  For clarity, constify the instance parameters
where _cpuid4_info_regs is only read from.

Signed-off-by: Ahmed S. Darwish <darwi@xxxxxxxxxxxxx>
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: H. Peter Anvin <hpa@xxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20250324133324.23458-9-darwi@xxxxxxxxxxxxx
---
 arch/x86/kernel/cpu/cacheinfo.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/arch/x86/kernel/cpu/cacheinfo.c b/arch/x86/kernel/cpu/cacheinfo.c
index be9be5e..fc4b49e 100644
--- a/arch/x86/kernel/cpu/cacheinfo.c
+++ b/arch/x86/kernel/cpu/cacheinfo.c
@@ -841,7 +841,7 @@ void init_intel_cacheinfo(struct cpuinfo_x86 *c)
 }
 
 static int __cache_amd_cpumap_setup(unsigned int cpu, int index,
-				    struct _cpuid4_info_regs *base)
+				    const struct _cpuid4_info_regs *base)
 {
 	struct cpu_cacheinfo *this_cpu_ci;
 	struct cacheinfo *ci;
@@ -898,7 +898,7 @@ static int __cache_amd_cpumap_setup(unsigned int cpu, int index,
 }
 
 static void __cache_cpumap_setup(unsigned int cpu, int index,
-				 struct _cpuid4_info_regs *base)
+				 const struct _cpuid4_info_regs *base)
 {
 	struct cpu_cacheinfo *this_cpu_ci = get_cpu_cacheinfo(cpu);
 	struct cacheinfo *ci, *sibling_ci;
@@ -933,7 +933,8 @@ static void __cache_cpumap_setup(unsigned int cpu, int index,
 		}
 }
 
-static void ci_info_init(struct cacheinfo *ci, struct _cpuid4_info_regs *base)
+static void ci_info_init(struct cacheinfo *ci,
+			 const struct _cpuid4_info_regs *base)
 {
 	ci->id = base->id;
 	ci->attributes = CACHE_ID;