From: "Philippe Mathieu-Daudé" <philmd@linaro.org>
To: Thomas Gleixner <tglx@linutronix.de>,
LKML <linux-kernel@vger.kernel.org>
Cc: x86@kernel.org, David Woodhouse <dwmw2@infradead.org>,
Andrew Cooper <andrew.cooper3@citrix.com>,
Brian Gerst <brgerst@gmail.com>,
Arjan van de Veen <arjan@linux.intel.com>,
Paolo Bonzini <pbonzini@redhat.com>,
Paul McKenney <paulmck@kernel.org>,
Tom Lendacky <thomas.lendacky@amd.com>,
Sean Christopherson <seanjc@google.com>,
Oleksandr Natalenko <oleksandr@natalenko.name>,
Paul Menzel <pmenzel@molgen.mpg.de>,
"Guilherme G. Piccoli" <gpiccoli@igalia.com>,
Piotr Gorski <lucjan.lucjanov@gmail.com>,
Usama Arif <usama.arif@bytedance.com>,
Juergen Gross <jgross@suse.com>,
Boris Ostrovsky <boris.ostrovsky@oracle.com>,
xen-devel@lists.xenproject.org,
Russell King <linux@armlinux.org.uk>,
Arnd Bergmann <arnd@arndb.de>,
linux-arm-kernel@lists.infradead.org,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>, Guo Ren <guoren@kernel.org>,
linux-csky@vger.kernel.org,
Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
linux-mips@vger.kernel.org,
"James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>,
Helge Deller <deller@gmx.de>,
linux-parisc@vger.kernel.org,
Paul Walmsley <paul.walmsley@sifive.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
linux-riscv@lists.infradead.org,
Mark Rutland <mark.rutland@arm.com>,
Sabin Rapan <sabrapan@amazon.com>,
"Michael Kelley (LINUX)" <mikelley@microsoft.com>,
Ross Philipson <ross.philipson@oracle.com>
Subject: Re: [patch V4 10/37] x86/smpboot: Get rid of cpu_init_secondary()
Date: Tue, 13 Jun 2023 01:49:23 +0200 [thread overview]
Message-ID: <94b05905-df3a-4534-a28c-fe9e3030fc4a@linaro.org> (raw)
In-Reply-To: <20230512205255.981999763@linutronix.de>
On 12/5/23 23:07, Thomas Gleixner wrote:
> From: Thomas Gleixner <tglx@linutronix.de>
>
> The synchronization of the AP with the control CPU is a SMP boot problem
> and has nothing to do with cpu_init().
>
> Open code cpu_init_secondary() in start_secondary() and move
> wait_for_master_cpu() into the SMP boot code.
>
> No functional change.
>
> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
> Tested-by: Michael Kelley <mikelley@microsoft.com>
> ---
> arch/x86/include/asm/processor.h | 1 -
> arch/x86/kernel/cpu/common.c | 27 ---------------------------
> arch/x86/kernel/smpboot.c | 24 +++++++++++++++++++-----
> 3 files changed, 19 insertions(+), 33 deletions(-)
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
next prev parent reply other threads:[~2023-06-12 23:49 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-12 21:06 [patch V4 00/37] cpu/hotplug, x86: Reworked parallel CPU bringup Thomas Gleixner
2023-05-12 21:06 ` [patch V4 01/37] x86/smpboot: Cleanup topology_phys_to_logical_pkg()/die() Thomas Gleixner
2023-05-12 21:07 ` [patch V4 02/37] cpu/hotplug: Mark arch_disable_smp_support() and bringup_nonboot_cpus() __init Thomas Gleixner
2023-05-12 21:07 ` [patch V4 03/37] x86/smpboot: Avoid pointless delay calibration if TSC is synchronized Thomas Gleixner
2023-05-12 21:07 ` [patch V4 04/37] x86/smpboot: Rename start_cpu0() to soft_restart_cpu() Thomas Gleixner
2023-06-12 23:45 ` Philippe Mathieu-Daudé
2023-05-12 21:07 ` [patch V4 05/37] x86/topology: Remove CPU0 hotplug option Thomas Gleixner
2023-05-12 21:07 ` [patch V4 06/37] x86/smpboot: Remove the CPU0 hotplug kludge Thomas Gleixner
2023-05-12 21:07 ` [patch V4 07/37] x86/smpboot: Restrict soft_restart_cpu() to SEV Thomas Gleixner
2023-06-12 23:46 ` Philippe Mathieu-Daudé
2023-05-12 21:07 ` [patch V4 08/37] x86/smpboot: Remove unnecessary barrier() Thomas Gleixner
2023-05-12 21:07 ` [patch V4 09/37] x86/smpboot: Split up native_cpu_up() into separate phases and document them Thomas Gleixner
2023-05-12 21:07 ` [patch V4 10/37] x86/smpboot: Get rid of cpu_init_secondary() Thomas Gleixner
2023-06-12 23:49 ` Philippe Mathieu-Daudé [this message]
2023-05-12 21:07 ` [patch V4 11/37] x86/cpu/cacheinfo: Remove cpu_callout_mask dependency Thomas Gleixner
2023-05-12 21:07 ` [patch V4 12/37] x86/smpboot: Move synchronization masks to SMP boot code Thomas Gleixner
2023-05-12 21:07 ` [patch V4 13/37] x86/smpboot: Make TSC synchronization function call based Thomas Gleixner
2023-05-12 21:07 ` [patch V4 14/37] x86/smpboot: Remove cpu_callin_mask Thomas Gleixner
2023-05-12 21:07 ` [patch V4 15/37] cpu/hotplug: Rework sparse_irq locking in bringup_cpu() Thomas Gleixner
2023-05-12 21:07 ` [patch V4 16/37] x86/smpboot: Remove wait for cpu_online() Thomas Gleixner
2023-05-12 21:07 ` [patch V4 17/37] x86/xen/smp_pv: Remove wait for CPU online Thomas Gleixner
2023-05-12 21:07 ` [patch V4 18/37] x86/xen/hvm: Get rid of DEAD_FROZEN handling Thomas Gleixner
2023-05-12 21:07 ` [patch V4 19/37] cpu/hotplug: Add CPU state tracking and synchronization Thomas Gleixner
2023-05-12 21:07 ` [patch V4 20/37] x86/smpboot: Switch to hotplug core state synchronization Thomas Gleixner
2023-05-12 21:07 ` [patch V4 21/37] cpu/hotplug: Remove cpu_report_state() and related unused cruft Thomas Gleixner
2023-05-12 21:07 ` [patch V4 22/37] ARM: smp: Switch to hotplug core state synchronization Thomas Gleixner
2023-05-12 21:07 ` [patch V4 23/37] arm64: " Thomas Gleixner
2023-05-12 21:07 ` [patch V4 24/37] csky/smp: " Thomas Gleixner
2023-05-12 21:07 ` [patch V4 25/37] MIPS: SMP_CPS: " Thomas Gleixner
2023-05-12 21:07 ` [patch V4 26/37] parisc: " Thomas Gleixner
2023-05-12 21:07 ` [patch V4 27/37] riscv: " Thomas Gleixner
2023-05-12 21:07 ` [patch V4 28/37] cpu/hotplug: Remove unused state functions Thomas Gleixner
2023-05-12 21:07 ` [patch V4 29/37] cpu/hotplug: Reset task stack state in _cpu_up() Thomas Gleixner
2023-05-12 21:07 ` [patch V4 30/37] cpu/hotplug: Provide a split up CPUHP_BRINGUP mechanism Thomas Gleixner
2023-05-12 21:07 ` [patch V4 31/37] x86/smpboot: Enable split CPU startup Thomas Gleixner
2023-05-12 21:07 ` [patch V4 32/37] x86/apic: Provide cpu_primary_thread mask Thomas Gleixner
2023-05-12 21:07 ` [patch V4 33/37] cpu/hotplug: Allow "parallel" bringup up to CPUHP_BP_KICK_AP_STATE Thomas Gleixner
2023-05-22 19:45 ` Mark Brown
2023-05-22 21:04 ` Thomas Gleixner
2023-05-22 22:27 ` Mark Brown
2023-05-22 23:12 ` Thomas Gleixner
2023-05-23 10:19 ` Mark Brown
2023-05-12 21:07 ` [patch V4 34/37] x86/apic: Save the APIC virtual base address Thomas Gleixner
2023-05-12 21:07 ` [patch V4 35/37] x86/smpboot: Implement a bit spinlock to protect the realmode stack Thomas Gleixner
2023-05-12 21:07 ` [patch V4 36/37] x86/smpboot: Support parallel startup of secondary CPUs Thomas Gleixner
2023-05-19 16:28 ` Jeffrey Hugo
2023-05-19 16:57 ` Andrew Cooper
2023-05-19 17:44 ` Jeffrey Hugo
2023-05-12 21:07 ` [patch V4 37/37] x86/smpboot/64: Implement arch_cpuhp_init_parallel_bringup() and enable it Thomas Gleixner
2023-05-15 12:00 ` Peter Zijlstra
2023-05-13 18:32 ` [patch V4 00/37] cpu/hotplug, x86: Reworked parallel CPU bringup Oleksandr Natalenko
2023-05-13 21:00 ` Helge Deller
2023-05-14 21:48 ` Guilherme G. Piccoli
2023-05-22 10:57 ` [PATCH] x86/apic: Fix use of X{,2}APIC_ENABLE in asm with older binutils Andrew Cooper
2023-05-22 11:17 ` Russell King (Oracle)
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=94b05905-df3a-4534-a28c-fe9e3030fc4a@linaro.org \
--to=philmd@linaro.org \
--cc=James.Bottomley@HansenPartnership.com \
--cc=andrew.cooper3@citrix.com \
--cc=arjan@linux.intel.com \
--cc=arnd@arndb.de \
--cc=boris.ostrovsky@oracle.com \
--cc=brgerst@gmail.com \
--cc=catalin.marinas@arm.com \
--cc=deller@gmx.de \
--cc=dwmw2@infradead.org \
--cc=gpiccoli@igalia.com \
--cc=guoren@kernel.org \
--cc=jgross@suse.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-csky@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mips@vger.kernel.org \
--cc=linux-parisc@vger.kernel.org \
--cc=linux-riscv@lists.infradead.org \
--cc=linux@armlinux.org.uk \
--cc=lucjan.lucjanov@gmail.com \
--cc=mark.rutland@arm.com \
--cc=mikelley@microsoft.com \
--cc=oleksandr@natalenko.name \
--cc=palmer@dabbelt.com \
--cc=paul.walmsley@sifive.com \
--cc=paulmck@kernel.org \
--cc=pbonzini@redhat.com \
--cc=pmenzel@molgen.mpg.de \
--cc=ross.philipson@oracle.com \
--cc=sabrapan@amazon.com \
--cc=seanjc@google.com \
--cc=tglx@linutronix.de \
--cc=thomas.lendacky@amd.com \
--cc=tsbogend@alpha.franken.de \
--cc=usama.arif@bytedance.com \
--cc=will@kernel.org \
--cc=x86@kernel.org \
--cc=xen-devel@lists.xenproject.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).