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From: "Cédric Le Goater" <clg@kaod.org>
To: linuxppc-dev@lists.ozlabs.org
Cc: "Michael Ellerman" <mpe@ellerman.id.au>,
	"Benjamin Herrenschmidt" <benh@kernel.crashing.org>,
	"Cédric Le Goater" <clg@kaod.org>
Subject: [PATCH 0/4] powerpc/xive: add support for H_INT_RESET
Date: Tue,  3 Apr 2018 09:15:44 +0200	[thread overview]
Message-ID: <20180403071548.19829-1-clg@kaod.org> (raw)

H_INT_RESET performs a reset of the Hypervisor internal interrupt
structures, removing all settings done with H_INT_SET_SOURCE_CONFIG
and H_INT_SET_QUEUE_CONFIG. This is most important for kdump and kexec
to be able to restart in a clean state.

First patch closes a window in the kexec sequence in which the
H_INT_RESET hcall can be run concurrently with other hcalls when CPUs
are brought down. The other patches wire up the reset hcall making
sure it supports H_LONG_BUSY_* returned by the Hypervisor.

Cédric Le Goater (4):
  powerpc/64/kexec: fix race in kexec when XIVE is shutdowned
  powerpc/xive: fix hcall H_INT_RESET to support long busy delays
  powerpc/xive: shutdown XIVE when kexec or kdump is performed
  powerpc/xive: prepare all hcalls to support long busy delays

 arch/powerpc/kernel/machine_kexec_64.c |  8 +--
 arch/powerpc/platforms/pseries/kexec.c |  7 ++-
 arch/powerpc/sysdev/xive/spapr.c       | 89 +++++++++++++++++++++++++++++-----
 3 files changed, 85 insertions(+), 19 deletions(-)

-- 
2.13.6

             reply	other threads:[~2018-04-03  7:31 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-04-03  7:15 Cédric Le Goater [this message]
2018-04-03  7:15 ` [PATCH 1/4] powerpc/64/kexec: fix race in kexec when XIVE is shutdowned Cédric Le Goater
2018-05-04 10:41   ` Michael Ellerman
2018-05-04 11:13     ` Cédric Le Goater
2018-05-04 11:36       ` Cédric Le Goater
2018-04-03  7:15 ` [PATCH 2/4] powerpc/xive: fix hcall H_INT_RESET to support long busy delays Cédric Le Goater
2018-05-04 10:41   ` Michael Ellerman
2018-05-04 11:27     ` Cédric Le Goater
2018-04-03  7:15 ` [PATCH 3/4] powerpc/xive: shutdown XIVE when kexec or kdump is performed Cédric Le Goater
2018-05-04 10:42   ` Michael Ellerman
2018-05-04 11:42     ` Cédric Le Goater
2018-04-03  7:15 ` [PATCH 4/4] powerpc/xive: prepare all hcalls to support long busy delays Cédric Le Goater
2018-05-04 10:42   ` Michael Ellerman
2018-05-04 11:49     ` Cédric Le Goater
2018-05-04 22:29     ` Benjamin Herrenschmidt
2018-05-07  2:30       ` Michael Ellerman
2018-05-07  7:32         ` Cédric Le Goater
2018-04-30 16:21 ` [PATCH 0/4] powerpc/xive: add support for H_INT_RESET Cédric Le Goater

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