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From: Andi Kleen <ak@suse.de>
To: Zachary Amsden <zach@vmware.com>,
	Eric Biederman <ebiederm@xmission.com>,
	patches@x86-64.org, linux-kernel@vger.kernel.org
Subject: [PATCH 2.6.21 review II] [8/10] VMI: Kprobe rpl fix
Date: Sat, 10 Feb 2007 12:52:36 +0100 (CET)	[thread overview]
Message-ID: <20070210115236.7DC3F13E01@wotan.suse.de> (raw)
In-Reply-To: <200702101252.033732000@suse.de>


From: Zachary Amsden <zach@vmware.com>
Kprobes bugfix for paravirt compatibility - RPL on the CS when inserting
BPs must match running kernel.

Signed-off-by: Zachary Amsden <zach@vmware.com>
CC: Eric Biederman <ebiederm@xmission.com>

diff -r fad1c2108c13 arch/i386/kernel/kprobes.c
--- a/arch/i386/kernel/kprobes.c	Fri Feb 02 16:22:37 2007 -0800
+++ b/arch/i386/kernel/kprobes.c	Fri Feb 02 16:28:48 2007 -0800
@@ -408,7 +408,7 @@ fastcall void *__kprobes trampoline_hand
 	spin_lock_irqsave(&kretprobe_lock, flags);
 	head = kretprobe_inst_table_head(current);
 	/* fixup registers */
-	regs->xcs = __KERNEL_CS;
+	regs->xcs = __KERNEL_CS | get_kernel_rpl();
 	regs->eip = trampoline_address;
 	regs->orig_eax = 0xffffffff;
 


  parent reply	other threads:[~2007-02-10 11:55 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-02-10 11:52 [PATCH 2.6.21 review II] [1/10] i386: page allocation hooks for VMI backend Andi Kleen
2007-02-10 11:52 ` [PATCH 2.6.21 review II] [2/10] i386: paravirt CPU hypercall batching mode Andi Kleen
2007-02-10 11:52 ` [PATCH 2.6.21 review II] [3/10] i386: iOPL handling for paravirt guests Andi Kleen
2007-02-10 11:52 ` [PATCH 2.6.21 review II] [4/10] i386: sMP boot hook for paravirt Andi Kleen
2007-02-10 11:52 ` [PATCH 2.6.21 review II] [5/10] i386: vMI backend for paravirt-ops Andi Kleen
2007-02-10 11:52 ` [PATCH 2.6.21 review II] [6/10] i386: vMI timer patches Andi Kleen
2007-02-10 11:52 ` [PATCH 2.6.21 review II] [7/10] VMI: Profile pc badness Andi Kleen
2007-02-10 11:52 ` Andi Kleen [this message]
2007-02-10 11:52 ` [PATCH 2.6.21 review II] [9/10] VMI: Vmi timer race Andi Kleen
2007-02-10 11:52 ` [PATCH 2.6.21 review II] [10/10] VMI: Paravirt debug defaults off Andi Kleen

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