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From: Nadav Amit <namit@vmware.com>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: <kvm@vger.kernel.org>, Nadav Amit <namit@vmware.com>
Subject: [PATCH] x86: fix smp_stacktop on 32-bit
Date: Wed, 24 Jun 2020 13:36:02 -0700	[thread overview]
Message-ID: <20200624203602.44659-1-namit@vmware.com> (raw)

smp_stacktop in 32-bit is fixed to some magic address. Use the address
of the memory that was reserved for the stack instead.

Signed-off-by: Nadav Amit <namit@vmware.com>
---
 x86/cstart.S | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/x86/cstart.S b/x86/cstart.S
index 1d8b8ac..a072aed 100644
--- a/x86/cstart.S
+++ b/x86/cstart.S
@@ -134,7 +134,7 @@ prepare_32:
 	mov %eax, %cr0
 	ret
 
-smp_stacktop:	.long 0xa0000
+smp_stacktop:	.long stacktop - 4096
 
 save_id:
 	movl $(APIC_DEFAULT_PHYS_BASE + APIC_ID), %eax
-- 
2.20.1


             reply	other threads:[~2020-06-24 20:38 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-24 20:36 Nadav Amit [this message]
2020-06-25 10:41 ` [PATCH] x86: fix smp_stacktop on 32-bit Paolo Bonzini
2020-06-25 11:15 ` Paolo Bonzini

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