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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2013-05-10 16:59:18 +1000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2013-05-10 16:59:18 +1000
commit73ed148aea9dc0508be7e30e7a447f55c1b2f378 (patch)
tree2571b5d1851a9f2bef62e92def3608f738748251 /arch/powerpc/include/asm/opal.h
parent1de1455f33709a8afd8d41d26d09739a1148105b (diff)
downloadvexpress-lsk-73ed148aea9dc0508be7e30e7a447f55c1b2f378.tar.gz
powerpc/powernv: Improve kexec reliability
We add a machine_shutdown hook that frees the OPAL interrupts (so they get masked at the source and don't fire while kexec'ing) and which triggers an IODA reset on all the PCIe host bridges which will have the effect of blocking all DMAs and subsequent PCIs interrupts. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/include/asm/opal.h')
-rw-r--r--arch/powerpc/include/asm/opal.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/opal.h b/arch/powerpc/include/asm/opal.h
index b6c8b58b1d7..b2906adb89d 100644
--- a/arch/powerpc/include/asm/opal.h
+++ b/arch/powerpc/include/asm/opal.h
@@ -563,6 +563,8 @@ extern void opal_nvram_init(void);
extern int opal_machine_check(struct pt_regs *regs);
+extern void opal_shutdown(void);
+
#endif /* __ASSEMBLY__ */
#endif /* __OPAL_H */