linux-kernel - Re: [patch 00/58] x86/apic: Decrapification and static calls

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Message-ID: <502aa1d5-97a0-7787-1d9c-486f351fe9c5@free.fr>
Date:   Thu, 20 Jul 2023 14:43:55 +0200
From:   Marc Gonzalez <marc.w.gonzalez@...e.fr>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     x86@...nel.org, LKML <linux-kernel@...r.kernel.org>
Subject: Re: [patch 00/58] x86/apic: Decrapification and static calls

On 18/07/2023 01:14, Thomas Gleixner wrote:

> Talking about those museums pieces and the related historic maze, I really
> have to bring up the question again, whether we should finally kill support
> for the museum CPUs and move on.
> 
> Ideally we remove 32bit support altogether. I know the answer... :(

Hello Thomas,

For what it's worth, there are a few millions of these in the field:

# cat /proc/cpuinfo
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 28
model name	: Intel(R) Atom(TM) CPU CE4150   @ 1.20GHz
stepping	: 10
microcode	: 0x106
cpu MHz		: 1199.885
cache size	: 512 KB
physical id	: 0
siblings	: 2
core id		: 0
cpu cores	: 1
apicid		: 0
initial apicid	: 0
fdiv_bug	: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 10
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc arch_perfmon pebs bts cpuid aperfmperf pni dtes64 monitor ds_cpl vmx tm2 ssse3 cx16 xtpr pdcm movbe lahf_lm tpr_shadow vnmi flexpriority vpid dtherm
vmx flags	: vnmi flexpriority tsc_offset vtpr vapic
bugs		:
bogomips	: 2400.76
clflush size	: 64
cache_alignment	: 64
address sizes	: 32 bits physical, 48 bits virtual
power management:

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 28
model name	: Intel(R) Atom(TM) CPU CE4150   @ 1.20GHz
stepping	: 10
microcode	: 0x106
cpu MHz		: 1200.188
cache size	: 512 KB
physical id	: 0
siblings	: 2
core id		: 0
cpu cores	: 1
apicid		: 1
initial apicid	: 1
fdiv_bug	: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 10
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc arch_perfmon pebs bts cpuid aperfmperf pni dtes64 monitor ds_cpl tm2 ssse3 cx16 xtpr pdcm movbe lahf_lm dtherm
bugs		:
bogomips	: 2400.76
clflush size	: 64
cache_alignment	: 64
address sizes	: 32 bits physical, 48 bits virtual
power management:


# uname -a
Linux foo 5.15.42+ #182 SMP PREEMPT Mon Jul 17 09:41:27 UTC 2023 i686 GNU/Linux

They will probably be running 6.1 in a few months.

Regards