kernel.git/arch/powerpc/platforms/pseries/hotplug-cpu.c, branch linux-3.19.y

of/reconfig: Always use the same structure for notifiers

2014-11-24T22:25:03Z

The OF_RECONFIG notifier callback uses a different structure depending on whether it is a node change or a property change. This is silly, and not very safe. Rework the code to use the same data structure regardless of the type of notifier. Signed-off-by: Grant Likely Cc: Benjamin Herrenschmidt Cc: Rob Herring Cc: Pantelis Antoniou Cc:

powerpc/pseries: Make CPU hotplug path endian safe

2014-10-15T00:25:59Z

- ibm,rtas-configure-connector should treat the RTAS data as big endian. - Treat ibm,ppc-interrupt-server#s as big-endian when setting smp_processor_id during hotplug. Signed-off-by: Bharata B Rao Signed-off-by: Thomas Falcon Acked-by: Nathan Fontenot Signed-off-by: Michael Ellerman

pseries: Fix endian issues in cpu hot-removal

2014-09-25T13:14:48Z

When removing a cpu, this patch makes sure that values gotten from or passed to firmware are in the correct endian format. Signed-off-by: Thomas Falcon Signed-off-by: Michael Ellerman

powerpc: Fix Oops in rtas_stop_self()

2014-04-28T03:08:47Z

commit 41dd03a9 may cause Oops in rtas_stop_self(). The reason is that the rtas_args was moved into stack space. For a box with more that 4GB RAM, the stack could easily be outside 32bit range, but RTAS is 32bit. So the patch moves rtas_args away from stack by adding static before it. Signed-off-by: Li Zhong Signed-off-by: Anton Blanchard Cc: stable@vger.kernel.org # 3.14+ Signed-off-by: Benjamin Herrenschmidt

powerpc/pseries: Don't try to register pseries cpu hotplug on non-pseries

2014-03-07T04:50:13Z

This results in oddball messages at boot on other platforms telling us that CPU hotplug isn't supported even when it is. Signed-off-by: Benjamin Herrenschmidt

powerpc/le: Ensure that the 'stop-self' RTAS token is handled correctly

2014-02-28T07:06:24Z

Currently we're storing a host endian RTAS token in rtas_stop_self_args.token. We then pass that directly to rtas. This is fine on big endian however on little endian the token is not what we expect. This will typically result in hitting: panic("Alas, I survived.\n"); To fix this we always use the stop-self token in host order and always convert it to be32 before passing this to rtas. Signed-off-by: Tony Breeds Cc: stable@vger.kernel.org Signed-off-by: Benjamin Herrenschmidt

pseries: Move plpar_wrapper.h to powerpc common include/asm location.

2013-08-27T04:43:05Z

As a part of pseries_idle backend driver cleanup to make the code common to both pseries and powernv platforms, it is necessary to move the backend-driver code to drivers/cpuidle. As a pre-requisite for that, it is essential to move plpar_wrapper.h to include/asm. Signed-off-by: Deepthi Dharwar Signed-off-by: Benjamin Herrenschmidt

powerpc: Stop using non-architected shared_proc field in lppaca

2013-08-14T01:50:26Z

Although the shared_proc field in the lppaca works today, it is not architected. A shared processor partition will always have a non zero yield_count so use that instead. Create a wrapper so users don't have to know about the details. In order for older kernels to continue to work on KVM we need to set the shared_proc bit. While here, remove the ugly bitfield. Signed-off-by: Anton Blanchard Signed-off-by: Benjamin Herrenschmidt

powerpc: Fix a lazy irq related WARING in arch_local_irq_restore()

2013-01-10T03:43:45Z

The pseries CPU hotplug code uses cede_processor without properly synchronizing the SW and HW interrupt enable state. This fixes it using the same helpers that were written for the idle code. Signed-off-by: Li Zhong ======================= Signed-off-by: Benjamin Herrenschmidt

powerpc+of: Add of node/property notification chain for adds and removes

2012-11-15T01:56:41Z

This patch moves the notification chain for updates to the device tree from the powerpc/pseries code to the base OF code. This makes this functionality available to all architectures. Additionally the notification chain is updated to allow notifications for property add/remove/update. To make this work a pointer to a new struct (of_prop_reconfig) is passed to the routines in the notification chain. The of_prop_reconfig property contains a pointer to the node containing the property and a pointer to the property itself. In the case of property updates, the property pointer refers to the new property. Signed-off-by: Nathan Fontenot Acked-by: Rob Herring Acked-by: Grant Likely Signed-off-by: Benjamin Herrenschmidt