From: Dave Hansen <dave.hansen@intel.com>
To: Steve Wahl <steve.wahl@hpe.com>,
Justin Ernst <justin.ernst@hpe.com>,
Kyle Meyer <kyle.meyer@hpe.com>,
Dimitri Sivanich <dimitri.sivanich@hpe.com>,
Russ Anderson <russ.anderson@hpe.com>,
Thomas Gleixner <tglx@kernel.org>, Ingo Molnar <mingo@redhat.com>,
Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
linux-kernel@vger.kernel.org
Subject: Dead arch/x86 UV code?
Date: Wed, 23 Sep 2026 06:29:56 -0700 [thread overview]
Message-ID: <d49f2e1a-1f19-49e8-a2a0-98b839274b69@intel.com> (raw)
Hi Folks,
I threw a silly LLM at arch/x86 trying to find unused code. One of the
things that stood out was UV:
arch/x86/include/asm/uv/bios.h | 3
arch/x86/include/asm/uv/uv_hub.h | 156 ---------------
arch/x86/include/asm/uv/uv_irq.h | 37 ---
arch/x86/kernel/apic/x2apic_uv_x.c | 187 ------------------
arch/x86/platform/uv/bios_uv.c | 44 ----
arch/x86/platform/uv/uv_irq.c | 210 ---------------------
b/arch/x86/include/asm/hw_irq.h | 15 -
b/arch/x86/include/asm/uv/bios.h | 11 -
b/arch/x86/include/asm/uv/uv.h | 2
b/arch/x86/include/asm/uv/uv_geo.h | 2
b/arch/x86/include/asm/uv/uv_hub.h | 156 ---------------
b/arch/x86/kernel/apic/x2apic_uv_x.c | 70 -------
b/arch/x86/kernel/cpu/common.c | 4
b/arch/x86/platform/uv/Makefile | 2
b/arch/x86/platform/uv/bios_uv.c | 4
16 files changed, 15 insertions(+), 891 deletions(-)
It looks like a big chunk of it was just there to support some drivers
that are now gone with:
dbf69afe320e ("misc: sgi-xp: Remove SGI XP drivers")
85de4712bccf ("misc: sgi-gru: Remove SGI GRU driver")
I spot checked some of LLM spew. It didn't all seem to be noise. Could
folks find some time to go through and see if this really is dead code?
LLM spew is here:
https://sr71.net/~dave/intel/uv/
next reply other threads:[~2026-09-23 13:29 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-23 13:29 Dave Hansen [this message]
2026-09-23 15:30 ` Steve Wahl
2026-09-23 15:41 ` Dave Hansen
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