[RFC][PATCH 05/34] x86/cpu: Move /proc per-cpu ->x86_phys_bits reference to global one

Dave Hansen
2024-02-22T18:39:33Z

This is one of the few references to the per-cpu version of
->x86_phys_bits. It is theoretically possible to have this value vary
from CPU to CPU. But in practice nobody builds systems that way.

Continue outputting the value in /proc, but read it from the global
configuration.

Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
---

b/arch/x86/kernel/cpu/proc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff -puN arch/x86/kernel/cpu/proc.c~proc-global-x86-phys-bits arch/x86/kernel/cpu/proc.c
--- a/arch/x86/kernel/cpu/proc.c~proc-global-x86-phys-bits 2024-02-22 10:08:50.584536732 -0800
+++ b/arch/x86/kernel/cpu/proc.c 2024-02-22 10:08:50.584536732 -0800
@@ -133,7 +133,7 @@ static int show_cpuinfo(struct seq_file
seq_printf(m, "clflush size\t: %u\n", c->x86_clflush_size);
seq_printf(m, "cache_alignment\t: %d\n", c->x86_cache_alignment);
seq_printf(m, "address sizes\t: %u bits physical, %u bits virtual\n",
- c->x86_phys_bits, c->x86_virt_bits);
+ x86_phys_bits(), c->x86_virt_bits);

seq_puts(m, "power management:");
for (i = 0; i < 32; i++) {
_