[PATCH v2 07/10] um: Remove unused ipi_pipe field from cpuinfo_um

From: Tiwei Bie
Date: Sun Aug 10 2025 - 01:53:43 EST


From: Tiwei Bie <tiwei.btw@xxxxxxxxxxxx>

It's no longer used after the removal of the SMP implementation in
TT mode by commit 28fa468f5316 ("um: Remove broken SMP support").

While at it, remove the outdated comment.

Signed-off-by: Tiwei Bie <tiwei.btw@xxxxxxxxxxxx>
---
arch/um/include/asm/processor-generic.h | 1 -
arch/um/kernel/um_arch.c | 3 ---
2 files changed, 4 deletions(-)

diff --git a/arch/um/include/asm/processor-generic.h b/arch/um/include/asm/processor-generic.h
index 236fdfd7cdbe..7854d51b6639 100644
--- a/arch/um/include/asm/processor-generic.h
+++ b/arch/um/include/asm/processor-generic.h
@@ -71,7 +71,6 @@ extern void start_thread(struct pt_regs *regs, unsigned long entry,

struct cpuinfo_um {
unsigned long loops_per_jiffy;
- int ipi_pipe[2];
int cache_alignment;
union {
__u32 x86_capability[NCAPINTS + NBUGINTS];
diff --git a/arch/um/kernel/um_arch.c b/arch/um/kernel/um_arch.c
index 2f5ee045bc7a..e46718b3c711 100644
--- a/arch/um/kernel/um_arch.c
+++ b/arch/um/kernel/um_arch.c
@@ -54,12 +54,9 @@ static void __init add_arg(char *arg)

/*
* These fields are initialized at boot time and not changed.
- * XXX This structure is used only in the non-SMP case. Maybe this
- * should be moved to smp.c.
*/
struct cpuinfo_um boot_cpu_data = {
.loops_per_jiffy = 0,
- .ipi_pipe = { -1, -1 },
.cache_alignment = L1_CACHE_BYTES,
.x86_capability = { 0 }
};
--
2.34.1