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[PATCH v2 1/3] xen/x86: Remove unneeded stub_page setting
- To: <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Jason Andryuk <jason.andryuk@xxxxxxx>
- Date: Thu, 4 Jun 2026 19:18:35 -0400
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- Cc: Jason Andryuk <jason.andryuk@xxxxxxx>, Jan Beulich <jbeulich@xxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Teddy Astie <teddy.astie@xxxxxxxxxx>
- Delivery-date: Thu, 04 Jun 2026 23:52:13 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
stub_page is not used in the for loop, and it unconditionally set below
just outside the patch context with:
stub_page = alloc_stub_page(cpu, &per_cpu(stubs.mfn, cpu));
Remove it.
Signed-off-by: Jason Andryuk <jason.andryuk@xxxxxxx>
---
xen/arch/x86/smpboot.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/xen/arch/x86/smpboot.c b/xen/arch/x86/smpboot.c
index ff05955bae..7241dba621 100644
--- a/xen/arch/x86/smpboot.c
+++ b/xen/arch/x86/smpboot.c
@@ -1091,7 +1091,7 @@ static int cpu_smpboot_alloc(unsigned int cpu)
memcpy(per_cpu(idt, cpu), bsp_idt, sizeof(bsp_idt));
disable_each_ist(per_cpu(idt, cpu));
- for ( stub_page = 0, i = cpu & ~(STUBS_PER_PAGE - 1);
+ for ( i = cpu & ~(STUBS_PER_PAGE - 1);
i < nr_cpu_ids && i <= (cpu | (STUBS_PER_PAGE - 1)); ++i )
if ( cpu_online(i) && cpu_to_node(i) == node )
{
--
2.54.0
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