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powerpc/82xx: Blacklist pq2_restart() for kprobe

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kprobe does not handle events happening in real mode, all
functions running with MMU disabled have to be blacklisted.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Acked-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/5dca36682383577a3c2b2bca4d577e8654944461.1585670437.git.christophe.leroy@c-s.fr
This commit is contained in:
Christophe Leroy 2020-03-31 16:03:37 +00:00 • committed by Michael Ellerman
parent e83f01fdb9
commit 1740f15a99
1 changed files with 3 additions and 0 deletions
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3
arch/powerpc/platforms/82xx/pq2.c
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@ -10,6 +10,8 @@
* Copyright (c) 2006 MontaVista Software, Inc. * Copyright (c) 2006 MontaVista Software, Inc.
*/ */
#include <linux/kprobes.h>
#include <asm/cpm2.h> #include <asm/cpm2.h>
#include <asm/io.h> #include <asm/io.h>
#include <asm/pci-bridge.h> #include <asm/pci-bridge.h>
@ -29,6 +31,7 @@ void __noreturn pq2_restart(char *cmd)
panic("Restart failed\n"); panic("Restart failed\n");
} }
NOKPROBE_SYMBOL(pq2_restart)
#ifdef CONFIG_PCI #ifdef CONFIG_PCI
static int pq2_pci_exclude_device(struct pci_controller *hose, static int pq2_pci_exclude_device(struct pci_controller *hose,