linux-kernel - Re: [PATCH 3/5] irqchip/bcm2836: Make IPIs use handle_percpu_devid

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Message-ID: <20201215002134.GA182208@roeck-us.net>
Date:   Mon, 14 Dec 2020 16:21:34 -0800
From:   Guenter Roeck <linux@...ck-us.net>
To:     Valentin Schneider <valentin.schneider@....com>
Cc:     linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        Andrew Lunn <andrew@...n.ch>,
        Lorenzo Pieralisi <Lorenzo.Pieralisi@....com>,
        Jason Cooper <jason@...edaemon.net>,
        Scott Branden <sbranden@...adcom.com>,
        Marc Zyngier <maz@...nel.org>,
        Gregory Clement <gregory.clement@...tlin.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Ray Jui <rjui@...adcom.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>
Subject: Re: [PATCH 3/5] irqchip/bcm2836: Make IPIs use
 handle_percpu_devid_irq()

On Mon, Nov 09, 2020 at 09:41:19AM +0000, Valentin Schneider wrote:
> As done for the Arm GIC irqchips, move IPIs to handle_percpu_devid_irq() as
> handle_percpu_devid_fasteoi_ipi() isn't actually required.
> 
> Signed-off-by: Valentin Schneider <valentin.schneider@....com>

This patch results in boot failures (silent stall) for the qemu
raspi2 emulation. Unfortunately it can not be reverted because
handle_percpu_devid_fasteoi_ipi no longer exists in next-20201214,
so I don't know if it is the only problem.

Guenter

---
bisect log:

# bad: [7bba37a1591369e2e506d599b8f5d7d0516b2dbc] Add linux-next specific files for 20201214
# good: [0477e92881850d44910a7e94fc2c46f96faa131f] Linux 5.10-rc7
git bisect start 'HEAD' 'v5.10-rc7'
# good: [fe5c40ab90a1f82ba97294637eaf875cfdd7a05f] Merge remote-tracking branch 'nand/nand/next'
git bisect good fe5c40ab90a1f82ba97294637eaf875cfdd7a05f
# good: [674a0d6de8bd290671f7dff405205871a70300b3] Merge remote-tracking branch 'spi/for-next'
git bisect good 674a0d6de8bd290671f7dff405205871a70300b3
# bad: [8623dae312f73a2ea3230b1c648d3004cfc224ce] Merge remote-tracking branch 'vfio/next'
git bisect bad 8623dae312f73a2ea3230b1c648d3004cfc224ce
# bad: [9e2e5ac5449f5924cc15f350b3d2feae9bb8c4c4] Merge remote-tracking branch 'workqueues/for-next'
git bisect bad 9e2e5ac5449f5924cc15f350b3d2feae9bb8c4c4
# good: [e661ba4fd1c995dd2c3cf60c1858ad6b83dd8448] Merge branch 'efi/core'
git bisect good e661ba4fd1c995dd2c3cf60c1858ad6b83dd8448
# bad: [db0c509d351fe195afcfb96fc21f4d2b5dd14e4c] Merge remote-tracking branch 'ftrace/for-next'
git bisect bad db0c509d351fe195afcfb96fc21f4d2b5dd14e4c
# good: [8c91f9e7378ef03c0e67de4388d5ddb9ab9a6bf3] Merge remote-tracking branch 'clockevents/timers/drivers/next'
git bisect good 8c91f9e7378ef03c0e67de4388d5ddb9ab9a6bf3
# bad: [2f5fbc4305d07725bfebaedb09e57271315691ef] irqchip/qcom-pdc: Fix phantom irq when changing between rising/falling
git bisect bad 2f5fbc4305d07725bfebaedb09e57271315691ef
# good: [e52e73b7e9f7d08b8c2ef6fb1657105093e22a03] irqchip/armada-370-xp: Make IPIs use handle_percpu_devid_irq()
git bisect good e52e73b7e9f7d08b8c2ef6fb1657105093e22a03
# bad: [91f90daa4fb2b77db7aa25ef2e0206f2e3962665] platform-msi: Track shared domain allocation
git bisect bad 91f90daa4fb2b77db7aa25ef2e0206f2e3962665
# bad: [b388fa50142510fb6477f130bb1b3f05a0a263a1] Revert "genirq: Add fasteoi IPI flow"
git bisect bad b388fa50142510fb6477f130bb1b3f05a0a263a1
# bad: [a2e042e13ff322ad523a2f131dd6e03e8bc05053] irqchip/hip04: Make IPIs use handle_percpu_devid_irq()
git bisect bad a2e042e13ff322ad523a2f131dd6e03e8bc05053
# bad: [ffdad793d579c9286c7b67a86d1a3c890fb32082] irqchip/bcm2836: Make IPIs use handle_percpu_devid_irq()
git bisect bad ffdad793d579c9286c7b67a86d1a3c890fb32082
# first bad commit: [ffdad793d579c9286c7b67a86d1a3c890fb32082] irqchip/bcm2836: Make IPIs use handle_percpu_devid_irq()