From: Giacomo Mazzola <gmazz@amazon.de>
To: <kvm@vger.kernel.org>
Cc: Giacomo Mazzola <gmazz@amazon.de>
Subject: [kvm-unit-tests PATCH 1/8] x86: efi: use PER_CPU_SIZE for per-CPU stack allocation
Date: Tue, 9 Jun 2026 14:08:53 +0000 [thread overview]
Message-ID: <20260609140901.95727-2-gmazz@amazon.de> (raw)
In-Reply-To: <20260609140901.95727-1-gmazz@amazon.de>
The EFI startup code reserves PAGE_SIZE (4 KiB) per-CPU stacks, but
the non-EFI path (cstart64.S) uses PER_CPU_SIZE (12 KiB). The smaller
EFI stack causes stack overflows. Make the two paths consistent.
Signed-off-by: Giacomo Mazzola <gmazz@amazon.de>
---
x86/efi/efistart64.S | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/x86/efi/efistart64.S b/x86/efi/efistart64.S
index 6025dc2f..0f9f23d9 100644
--- a/x86/efi/efistart64.S
+++ b/x86/efi/efistart64.S
@@ -8,7 +8,7 @@
/* Reserve stack in .data */
.data
.align PAGE_SIZE
- . = . + PAGE_SIZE * MAX_TEST_CPUS
+ . = . + PER_CPU_SIZE * MAX_TEST_CPUS
.globl stacktop
stacktop:
--
2.47.3
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Geschaeftsfuehrung: Christof Hellmis, Andreas Stieger
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Ust-ID: DE 365 538 597
next prev parent reply other threads:[~2026-06-09 14:10 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-09 14:08 [kvm-unit-tests PATCH 0/8] x86: fixes for running KUT as EFI on non-QEMU KVM hosts Giacomo Mazzola
2026-06-09 14:08 ` Giacomo Mazzola [this message]
2026-06-09 14:08 ` [kvm-unit-tests PATCH 2/8] x86: fix EFI memory allocator to clamp regions to 4 GiB Giacomo Mazzola
2026-06-09 14:08 ` [kvm-unit-tests PATCH 3/8] x86: skip PMU init when no PMU is advertised Giacomo Mazzola
2026-06-09 14:08 ` [kvm-unit-tests PATCH 4/8] x86: fix ISR thunk to use absolute indirect jump Giacomo Mazzola
2026-06-09 14:08 ` [kvm-unit-tests PATCH 5/8] x86: replace per-AP bringup prints with a single summary line Giacomo Mazzola
2026-06-09 14:08 ` [kvm-unit-tests PATCH 6/8] x86: add timeout-based SMP bringup when fw_cfg is unavailable Giacomo Mazzola
2026-06-09 14:08 ` [kvm-unit-tests PATCH 7/8] efi: fix load_options_size conversion to character count Giacomo Mazzola
2026-06-10 16:09 ` Andrew Jones
2026-06-09 14:09 ` [kvm-unit-tests PATCH 8/8] efi: parse KUT_ENV= from load options into environ Giacomo Mazzola
2026-06-10 18:18 ` Andrew Jones
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