linux.git/arch/powerpc/sysdev/xics, branch v6.0 Linux kernel source tree powerpc/xics: Include missing header 2022-05-24T10:44:30+00:00 Christophe Leroy christophe.leroy@csgroup.eu 2022-05-24T05:35:10+00:00 14554d92c1c5a127dd0dab8fce8f08bf70d8b39b Include of_adresses.h to get of_iomap() prototype. Fixes: 86c38fec69a4 ("powerpc: Remove asm/prom.h from all files that don't need it") Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/f20a14be1a29fa0a9ebcfc5ebf05eb69c5120d10.1653370502.git.christophe.leroy@csgroup.eu 
Include of_adresses.h to get of_iomap() prototype.

Fixes: 86c38fec69a4 ("powerpc: Remove asm/prom.h from all files that don't need it")
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/f20a14be1a29fa0a9ebcfc5ebf05eb69c5120d10.1653370502.git.christophe.leroy@csgroup.eu
powerpc/xics: fix refcount leak in icp_opal_init() 2022-05-22T05:58:30+00:00 Lv Ruyi lv.ruyi@zte.com.cn 2022-04-02T01:34:19+00:00 5dd9e27ea4a39f7edd4bf81e9e70208e7ac0b7c9 The of_find_compatible_node() function returns a node pointer with refcount incremented, use of_node_put() on it when done. Reported-by: Zeal Robot <zealci@zte.com.cn> Signed-off-by: Lv Ruyi <lv.ruyi@zte.com.cn> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220402013419.2410298-1-lv.ruyi@zte.com.cn 
The of_find_compatible_node() function returns a node pointer with
refcount incremented, use of_node_put() on it when done.

Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Lv Ruyi <lv.ruyi@zte.com.cn>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220402013419.2410298-1-lv.ruyi@zte.com.cn
powerpc/kasan: Disable address sanitization in kexec paths 2022-05-22T05:58:29+00:00 Daniel Axtens dja@axtens.net 2022-05-18T10:07:05+00:00 2ab2d5794f14c08676690bf0859f16cc768bb3a4 The kexec code paths involve code that necessarily run in real mode, as CPUs are disabled and control is transferred to the new kernel. Disable address sanitization for the kexec code and the functions called in real mode on CPUs being disabled. [paulus@ozlabs.org: combined a few work-in-progress commits of Daniel's and wrote the commit message.] Signed-off-by: Daniel Axtens <dja@axtens.net> Signed-off-by: Paul Mackerras <paulus@ozlabs.org> [mpe: Move pseries_machine_kexec() into kexec.c so setup.c can be instrumented] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/YoTFSQ2TUSEaDdVC@cleo 
The kexec code paths involve code that necessarily run in real mode, as
CPUs are disabled and control is transferred to the new kernel. Disable
address sanitization for the kexec code and the functions called in real
mode on CPUs being disabled.

[paulus@ozlabs.org: combined a few work-in-progress commits of
 Daniel's and wrote the commit message.]

Signed-off-by: Daniel Axtens <dja@axtens.net>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
[mpe: Move pseries_machine_kexec() into kexec.c so setup.c can be instrumented]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/YoTFSQ2TUSEaDdVC@cleo
powerpc: Add missing headers 2022-05-08T12:15:40+00:00 Christophe Leroy christophe.leroy@csgroup.eu 2022-03-08T19:20:25+00:00 e6f6390ab7b9d649c13de2c8a591bce61a10ec3b Don't inherit headers "by chances" from asm/prom.h, asm/mpc52xx.h, asm/pci.h etc... Include the needed headers, and remove asm/prom.h when it was needed exclusively for pulling necessary headers. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/be8bdc934d152a7d8ee8d1a840d5596e2f7d85e0.1646767214.git.christophe.leroy@csgroup.eu 
Don't inherit headers "by chances" from asm/prom.h, asm/mpc52xx.h,
asm/pci.h etc...

Include the needed headers, and remove asm/prom.h when it was
needed exclusively for pulling necessary headers.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/be8bdc934d152a7d8ee8d1a840d5596e2f7d85e0.1646767214.git.christophe.leroy@csgroup.eu
powerpc: Remove asm/prom.h from all files that don't need it 2022-05-08T12:15:04+00:00 Christophe Leroy christophe.leroy@csgroup.eu 2022-03-08T19:20:24+00:00 86c38fec69a461846d84f250f281e8cfbe54b25a Several files include asm/prom.h for no reason. Clean it up. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> [mpe: Drop change to prom_parse.c as reported by lkp@intel.com] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/7c9b8fda63dcf63e1b28f43e7ebdb95182cbc286.1646767214.git.christophe.leroy@csgroup.eu 
Several files include asm/prom.h for no reason.

Clean it up.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
[mpe: Drop change to prom_parse.c as reported by lkp@intel.com]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/7c9b8fda63dcf63e1b28f43e7ebdb95182cbc286.1646767214.git.christophe.leroy@csgroup.eu
powerpc/sysdev: Add __init attribute to eligible functions 2021-12-23T11:33:12+00:00 Nick Child nick.child@ibm.com 2021-12-16T22:00:20+00:00 6c552983d0e65a8c923dfacc4f69b694205672c1 Some files functions in 'arch/powerpc/sysdev' are deserving of an `__init` macro attribute. These functions are only called by other initialization functions and therefore should inherit the attribute. Also, change function declarations in header files to include `__init`. Signed-off-by: Nick Child <nick.child@ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20211216220035.605465-6-nick.child@ibm.com 
Some files functions in 'arch/powerpc/sysdev' are deserving of an `__init`
macro attribute. These functions are only called by other initialization
functions and therefore should inherit the attribute.
Also, change function declarations in header files to include `__init`.

Signed-off-by: Nick Child <nick.child@ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20211216220035.605465-6-nick.child@ibm.com
powerpc/xics: Set the IRQ chip data for the ICS native backend 2021-09-15T12:05:53+00:00 Cédric Le Goater clg@kaod.org 2021-09-13T13:40:56+00:00 c006a06508db4841d256d82f42da392d6391f3d9 The ICS native driver relies on the IRQ chip data to find the struct 'ics_native' describing the ICS controller but it was removed by commit 248af248a8f4 ("powerpc/xics: Rename the map handler in a check handler"). Revert this change to fix the Microwatt SoC platform. Fixes: 248af248a8f4 ("powerpc/xics: Rename the map handler in a check handler") Signed-off-by: Cédric Le Goater <clg@kaod.org> Tested-by: Gustavo Romero <gustavo.romero@linaro.org> Reviewed-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210913134056.3761960-1-clg@kaod.org 
The ICS native driver relies on the IRQ chip data to find the struct
'ics_native' describing the ICS controller but it was removed by commit
248af248a8f4 ("powerpc/xics: Rename the map handler in a check handler").
Revert this change to fix the Microwatt SoC platform.

Fixes: 248af248a8f4 ("powerpc/xics: Rename the map handler in a check handler")
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Tested-by: Gustavo Romero <gustavo.romero@linaro.org>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210913134056.3761960-1-clg@kaod.org
powerpc: use IRQF_NO_DEBUG for IPIs 2021-08-10T13:15:01+00:00 Cédric Le Goater clg@kaod.org 2021-07-19T13:06:14+00:00 17df41fec5b80b16ea4774495f1eb730e2225619 There is no need to use the lockup detector ("noirqdebug") for IPIs. The ipistorm benchmark measures a ~10% improvement on high systems when this flag is set. Signed-off-by: Cédric Le Goater <clg@kaod.org> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210719130614.195886-1-clg@kaod.org 
There is no need to use the lockup detector ("noirqdebug") for IPIs.
The ipistorm benchmark measures a ~10% improvement on high systems
when this flag is set.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210719130614.195886-1-clg@kaod.org
powerpc/xics: Fix IRQ migration 2021-08-10T13:15:01+00:00 Cédric Le Goater clg@kaod.org 2021-07-01T13:27:45+00:00 c80198a21792ac59412871e4e6fad5041c9be8e4 desc->irq_data points to the top level IRQ data descriptor which is not necessarily in the XICS IRQ domain. MSIs are in another domain for instance. Fix that by looking for a mapping on the low level XICS IRQ domain. Signed-off-by: Cédric Le Goater <clg@kaod.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210701132750.1475580-28-clg@kaod.org 
desc->irq_data points to the top level IRQ data descriptor which is
not necessarily in the XICS IRQ domain. MSIs are in another domain for
instance. Fix that by looking for a mapping on the low level XICS IRQ
domain.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210701132750.1475580-28-clg@kaod.org
powerpc/xics: Drop unmask of MSIs at startup 2021-08-10T13:15:00+00:00 Cédric Le Goater clg@kaod.org 2021-07-01T13:27:41+00:00 1e661f81a522eadfe4bc5bb1ec9fbae27c13f163 That was a workaround in the XICS domain because of the lack of MSI domain. This is now handled. Signed-off-by: Cédric Le Goater <clg@kaod.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210701132750.1475580-24-clg@kaod.org 
That was a workaround in the XICS domain because of the lack of MSI
domain. This is now handled.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210701132750.1475580-24-clg@kaod.org