lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Message-ID: <CAP6Zq1ig9hadeWATYVgzZkhmsU3qe6Se+hwU6rSjvnGr0OmvMA@mail.gmail.com> Date: Thu, 2 Nov 2023 10:38:36 +0200 From: Tomer Maimon <tmaimon77@...il.com> To: william@...nnington.com Cc: tali.perry1@...il.com, avifishman70@...il.com, linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, openbmc@...ts.ozlabs.org, Brian Ma <chma0@...oton.com> Subject: Re: [PATCH RESEND] ARM: npcm: Add CPU hotplug callbacks for kexec support Hi William, On Thu, 2 Nov 2023 at 02:53, <william@...nnington.com> wrote: > > From: Brian Ma <chma0@...oton.com> > > Add callbacks required for kexec to function. The NPCM7xx/NPCN8xx does > not expose controls for powering down CPU cores, so just wait in idle > loop. This patch is related only to NPCM7xx please modify NPCM7xx/NPCN8xx to NPCM7xx. > > Signed-off-by: Brian Ma <chma0@...oton.com> > Signed-off-by: William A. Kennington III <william@...nnington.com> > --- > arch/arm/mach-npcm/platsmp.c | 17 +++++++++++++++++ > 1 file changed, 17 insertions(+) > > diff --git a/arch/arm/mach-npcm/platsmp.c b/arch/arm/mach-npcm/platsmp.c > index 41891d3aa124..6cc7b5894f08 100644 > --- a/arch/arm/mach-npcm/platsmp.c > +++ b/arch/arm/mach-npcm/platsmp.c > @@ -69,10 +69,27 @@ static void __init npcm7xx_smp_prepare_cpus(unsigned int max_cpus) > > iounmap(scu_base); > } > +#ifdef CONFIG_HOTPLUG_CPU > +static void npcm7xx_cpu_die(unsigned int cpu) > +{ > + while (1) > + cpu_do_idle(); > +} > + > +static int npcm7xx_cpu_kill(unsigned int l_cpu) > +{ > + return 1; > +} > +#endif > + > > static struct smp_operations npcm7xx_smp_ops __initdata = { > .smp_prepare_cpus = npcm7xx_smp_prepare_cpus, > .smp_boot_secondary = npcm7xx_smp_boot_secondary, > +#ifdef CONFIG_HOTPLUG_CPU > + .cpu_die = npcm7xx_cpu_die, > + .cpu_kill = npcm7xx_cpu_kill, > +#endif > }; > > CPU_METHOD_OF_DECLARE(npcm7xx_smp, "nuvoton,npcm750-smp", &npcm7xx_smp_ops); > -- > 2.42.0.820.g83a721a137-goog > Best regards, Tomer
Powered by blists - more mailing lists