linux.git/arch/powerpc/sysdev/xive/common.c, branch v4.19 Linux kernel source tree treewide: correct "differenciate" and "instanciate" typos 2018-08-24T01:48:43+00:00 Finn Thain fthain@telegraphics.com.au 2018-08-24T00:00:52+00:00 3cc97bea600372885923a1c270d82523411a4c70 Also add these typos to spelling.txt so checkpatch.pl will look for them. Link: http://lkml.kernel.org/r/88af06b9de34d870cb0afc46cfd24e0458be2575.1529471371.git.fthain@telegraphics.com.au Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Cc: Masahiro Yamada <yamada.masahiro@socionext.com> Cc: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 
Also add these typos to spelling.txt so checkpatch.pl will look for them.

Link: http://lkml.kernel.org/r/88af06b9de34d870cb0afc46cfd24e0458be2575.1529471371.git.fthain@telegraphics.com.au
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
powerpc/xive: Remove xive_kexec_teardown_cpu() 2018-08-07T11:49:28+00:00 Benjamin Herrenschmidt benh@kernel.crashing.org 2018-04-11T05:18:01+00:00 e27e0a94651e30912443e88642e698240e01cd57 It's identical to xive_teardown_cpu() so just use the latter Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> 
It's identical to xive_teardown_cpu() so just use the latter

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
powerpc/64s: Remove POWER9 DD1 support 2018-07-16T01:37:21+00:00 Nicholas Piggin npiggin@gmail.com 2018-07-05T08:47:00+00:00 2bf1071a8d50928a4ae366bb3108833166c2b70c POWER9 DD1 was never a product. It is no longer supported by upstream firmware, and it is not effectively supported in Linux due to lack of testing. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Reviewed-by: Michael Ellerman <mpe@ellerman.id.au> [mpe: Remove arch_make_huge_pte() entirely] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> 
POWER9 DD1 was never a product. It is no longer supported by upstream
firmware, and it is not effectively supported in Linux due to lack of
testing.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Michael Ellerman <mpe@ellerman.id.au>
[mpe: Remove arch_make_huge_pte() entirely]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
powerpc/xive: Fix wrong xmon output caused by typo 2018-03-30T13:10:36+00:00 Frederic Barrat fbarrat@linux.vnet.ibm.com 2018-03-14T17:01:14+00:00 16b19f1a03f6a49618611b76818f04ea9cd15fb5 Signed-off-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> 
Signed-off-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Merge branch 'topic/ppc-kvm' into next 2018-01-21T11:43:43+00:00 Michael Ellerman mpe@ellerman.id.au 2018-01-21T11:43:43+00:00 5400fc229e6078a6964b15fb98e9a994df3d642a Merge the topic branch we share with kvm-ppc, this brings in two xive commits, one from Paul to rework HMI handling, and a minor cleanup to drop an unused flag. 
Merge the topic branch we share with kvm-ppc, this brings in two xive
commits, one from Paul to rework HMI handling, and a minor cleanup to
drop an unused flag.
powerpc/xive: Remove incorrect debug code 2018-01-16T12:48:04+00:00 Benjamin Herrenschmidt benh@kernel.crashing.org 2018-01-12T02:28:45+00:00 f5abe14f88e8259494d69614768789a67475b1ad WORD2 if the TIMA isn't byte accessible and isn't that useful to know about, take out the pr_devel statement. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> 
WORD2 if the TIMA isn't byte accessible and
isn't that useful to know about, take out the
pr_devel statement.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
powerpc/xive: Add interrupt flag to disable automatic EOI 2018-01-12T04:24:44+00:00 Benjamin Herrenschmidt benh@kernel.crashing.org 2018-01-12T02:39:28+00:00 7f1c410da59090f9bb2300efebbc3b717594d64c This will be used by KVM in order to keep escalation interrupts in the non-EOI (masked) state after they fire. They will be re-enabled directly in HW by KVM when needed. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> 
This will be used by KVM in order to keep escalation interrupts
in the non-EOI (masked) state after they fire. They will be
re-enabled directly in HW by KVM when needed.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
powerpc/xive: Clear XIVE internal structures when a CPU is removed 2017-10-04T11:01:57+00:00 Cédric Le Goater clg@kaod.org 2017-10-04T09:15:05+00:00 cc56939802fb4c9548be53563387a0700baeec82 Commit eac1e731b59e ("powerpc/xive: guest exploitation of the XIVE interrupt controller") introduced support for the XIVE exploitation mode of the P9 interrupt controller on the pseries platform. At that time, support for CPU removal was not complete on PowerVM and CPU hot unplug remained untested. It appears that some cleanups of the XIVE internal structures are required before releasing the CPU, without which the kernel crashes in a RTAS call doing the CPU isolation. These changes fix the crash by deconfiguring the IPI interrupt source and clearing the event queues of the CPU when it is removed. Fixes: eac1e731b59e ("powerpc/xive: guest exploitation of the XIVE interrupt controller") Signed-off-by: Cédric Le Goater <clg@kaod.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> 
Commit eac1e731b59e ("powerpc/xive: guest exploitation of the XIVE
interrupt controller") introduced support for the XIVE exploitation
mode of the P9 interrupt controller on the pseries platform.

At that time, support for CPU removal was not complete on PowerVM and
CPU hot unplug remained untested. It appears that some cleanups of the
XIVE internal structures are required before releasing the CPU,
without which the kernel crashes in a RTAS call doing the CPU
isolation.

These changes fix the crash by deconfiguring the IPI interrupt source
and clearing the event queues of the CPU when it is removed.

Fixes: eac1e731b59e ("powerpc/xive: guest exploitation of the XIVE interrupt controller")
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
powerpc/xive: improve debugging macros 2017-09-02T11:02:38+00:00 Cédric Le Goater clg@kaod.org 2017-08-30T19:46:17+00:00 5f121292f0a0873fa2cd3a0292fb4860a8953f38 Having the CPU identifier in the debug logs is helpful when tracking issues. Also add some more logging and fix a compile issue in xive_do_source_eoi(). Signed-off-by: Cédric Le Goater <clg@kaod.org> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> 
Having the CPU identifier in the debug logs is helpful when tracking
issues. Also add some more logging and fix a compile issue in
xive_do_source_eoi().

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
powerpc/xive: introduce H_INT_ESB hcall 2017-09-02T11:02:37+00:00 Cédric Le Goater clg@kaod.org 2017-08-30T19:46:15+00:00 bed81ee181dd6b21171cffbb80472cc5b774c24d The H_INT_ESB hcall() is used to issue a load or store to the ESB page instead of using the MMIO pages. This can be used as a workaround on some HW issues. The OS knows that this hcall should be used on an interrupt source when the ESB hcall flag is set to 1 in the hcall H_INT_GET_SOURCE_INFO. To maintain the frontier between the xive frontend and backend, we introduce a new xive operation 'esb_rw' to be used in the routines doing memory accesses on the ESBs. Signed-off-by: Cédric Le Goater <clg@kaod.org> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> 
The H_INT_ESB hcall() is used to issue a load or store to the ESB page
instead of using the MMIO pages. This can be used as a workaround on
some HW issues. The OS knows that this hcall should be used on an
interrupt source when the ESB hcall flag is set to 1 in the hcall
H_INT_GET_SOURCE_INFO.

To maintain the frontier between the xive frontend and backend, we
introduce a new xive operation 'esb_rw' to be used in the routines
doing memory accesses on the ESBs.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>