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| author |   Linas Vepstas <linas@austin.ibm.com> | 2007-11-20 12:28:15 +1100 |
|---|---|---|
| committer |   Paul Mackerras <paulus@samba.org> | 2007-11-20 16:10:09 +1100 |
| commit | a2b51812a4dc5db09ab4d4638d4d8ed456e2457e (patch) | |
| tree | c61eeb12f3c3164208468cf8837711f843a32792 /arch | |
| parent | [POWERPC] vdso: Fixes for cache block sizes (diff) | |
| download | linux-dev-a2b51812a4dc5db09ab4d4638d4d8ed456e2457e.tar.xz linux-dev-a2b51812a4dc5db09ab4d4638d4d8ed456e2457e.zip | |
[POWERPC] Fix RTAS os-term usage on kernel panic
The rtas_os_term() routine was being called at the wrong time.
The actual rtas call "os-term" will not ever return, and so
calling it from the panic notifier is too early. Instead,
call it from the machine_reset() call.
This splits the rtas_os_term() routine into two: one part to capture
the kernel panic message, invoked during the panic notifier, and
another part that is invoked during machine_reset().
Prior to this patch, the os-term call was never being made,
because panic_timeout was always non-zero. Calling os-term
helps keep the hypervisor happy! We have to keep the hypervisor
happy to avoid service, dump and error reporting problems.
Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/kernel/rtas.c | 12 | ||||
| -rw-r--r-- | arch/powerpc/platforms/pseries/setup.c | 3 |
2 files changed, 8 insertions, 7 deletions
diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c index 52e95c2158c0..053cac19f714 100644 --- a/arch/powerpc/kernel/rtas.c +++ b/arch/powerpc/kernel/rtas.c @@ -638,18 +638,18 @@ void rtas_halt(void) /* Must be in the RMO region, so we place it here */ static char rtas_os_term_buf[2048]; -void rtas_os_term(char *str) +void rtas_panic_msg(char *str) { - int status; + snprintf(rtas_os_term_buf, 2048, "OS panic: %s", str); +} - if (panic_timeout) - return; +void rtas_os_term(void) +{ + int status; if (RTAS_UNKNOWN_SERVICE == rtas_token("ibm,os-term")) return; - snprintf(rtas_os_term_buf, 2048, "OS panic: %s", str); - do { status = rtas_call(rtas_token("ibm,os-term"), 1, 1, NULL, __pa(rtas_os_term_buf)); diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c index fdb9b1c8f977..fdeefe54ea91 100644 --- a/arch/powerpc/platforms/pseries/setup.c +++ b/arch/powerpc/platforms/pseries/setup.c @@ -507,7 +507,8 @@ define_machine(pseries) { .restart = rtas_restart, .power_off = pSeries_power_off, .halt = rtas_halt, - .panic = rtas_os_term, + .panic = rtas_panic_msg, + .machine_shutdown = rtas_os_term, .get_boot_time = rtas_get_boot_time, .get_rtc_time = rtas_get_rtc_time, .set_rtc_time = rtas_set_rtc_time, |