linux-kernel - [v6 PATCH 0/6] Various SMP related fixes

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Date:   Fri, 22 Feb 2019 11:41:34 -0800
From:   Atish Patra <atish.patra@....com>
To:     linux-riscv@...ts.infradead.org
Cc:     Atish Patra <atish.patra@....com>,
        Alan Kao <alankao@...estech.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Andreas Schwab <schwab@...e.de>,
        Anup Patel <anup@...infault.org>,
        Dmitriy Cherkasov <dmitriy@...-tech.org>,
        Johan Hovold <johan@...nel.org>, linux-kernel@...r.kernel.org,
        Palmer Dabbelt <palmer@...ive.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Thomas Gleixner <tglx@...utronix.de>
Subject: [v6 PATCH 0/6] Various SMP related fixes

The existing upstream kernel doesn't boot for non-smp configuration.
This patch series address various issues with non-smp configurations.

The patch series is based on 5.0-rc7 + Johan's below mentioned patch
series. Tested on both QEMU and HiFive Unleashed board using both
OpenSBI & BBL.

https://lore.kernel.org/lkml/20190118140308.9599-1-johan@kernel.org/   

Changes from v5->v6
1. Dropped driver patches as they have been accepted via drivers tree.

Changes from v4->v5
1. Continue processing other harts even if isa string is incorrect for
   a single hart during HWCAP processing.

Changes from v3->v4
1. Fixed commit text length issues.
2. Updated hwcap patch to use common capabilities of all harts.
3. Rebased on Johan's patch series.

Changes from v2->v3

1. Fixed spurious white space.
2. Added lockdep for smpboot completion variable.
2. Added a sanity check for hwcap.

Changes from v1->v2

1. Move the cpuid to hartid map to smp.c from setup.c
2. Split 3rd patch into several small patches based on
   logical grouping.
3. Added a new patch that fixes an issue in hwcap query.
4. Changed the title of the patch series.

Atish Patra (6):
RISC-V: Do not wait indefinitely in __cpu_up
RISC-V: Move cpuid to hartid mapping to SMP.
RISC-V: Remove NR_CPUs check during hartid search from DT
RISC-V: Allow hartid-to-cpuid function to fail.
RISC-V: Compare cpuid with NR_CPUS before mapping.
RISC-V: Assign hwcap as per comman capabilities.

arch/riscv/include/asm/smp.h   | 18 +++++++++++++-----
arch/riscv/kernel/cpu.c        |  4 ----
arch/riscv/kernel/cpufeature.c | 41 ++++++++++++++++++++++-------------------
arch/riscv/kernel/setup.c      |  9 ---------
arch/riscv/kernel/smp.c        | 10 +++++++++-
arch/riscv/kernel/smpboot.c    | 20 +++++++++++++++++---
6 files changed, 61 insertions(+), 41 deletions(-)

--
2.7.4