From e9bbc8cde0e3c33b42ddbe1b02108cb5c97275eb Mon Sep 17 00:00:00 2001 From: Anton Blanchard Date: Thu, 18 Feb 2010 12:11:51 +0000 Subject: [PATCH] powerpc/pseries: Call ibm,os-term if the ibm,extended-os-term is present We have had issues in the past with ibm,os-term initiating shutdown of a partition. This is confusing to the user, especially if panic_timeout is non zero. The temporary fix was to avoid calling ibm,os-term if a panic_timeout was set and since we set it on every boot we basically never call ibm,os-term. An extended version of ibm,os-term has since been implemented which gives us the behaviour we want: "When the platform supports extended ibm,os-term behavior, the return to the RTAS will always occur unless there is a kernel assisted dump active as initiated by an ibm,configure-kernel-dump call." This patch checks for the ibm,extended-os-term property and calls ibm,os-term if it exists. Signed-off-by: Anton Blanchard Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/kernel/rtas.c | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-) diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c index 74367841615a..0e1ec6f746f6 100644 --- a/arch/powerpc/kernel/rtas.c +++ b/arch/powerpc/kernel/rtas.c @@ -691,10 +691,14 @@ void rtas_os_term(char *str) { int status; - if (panic_timeout) - return; - - if (RTAS_UNKNOWN_SERVICE == rtas_token("ibm,os-term")) + /* + * Firmware with the ibm,extended-os-term property is guaranteed + * to always return from an ibm,os-term call. Earlier versions without + * this property may terminate the partition which we want to avoid + * since it interferes with panic_timeout. + */ + if (RTAS_UNKNOWN_SERVICE == rtas_token("ibm,os-term") || + RTAS_UNKNOWN_SERVICE == rtas_token("ibm,extended-os-term")) return; snprintf(rtas_os_term_buf, 2048, "OS panic: %s", str); @@ -705,8 +709,7 @@ void rtas_os_term(char *str) } while (rtas_busy_delay(status)); if (status != 0) - printk(KERN_EMERG "ibm,os-term call failed %d\n", - status); + printk(KERN_EMERG "ibm,os-term call failed %d\n", status); } static int ibm_suspend_me_token = RTAS_UNKNOWN_SERVICE; -- 2.39.5