From: Pavel Tatashin <pasha.tatashin@soleen.com>
To: James Morse <james.morse@arm.com>
Cc: James Morris <jmorris@namei.org>, Sasha Levin <sashal@kernel.org>,
"Eric W. Biederman" <ebiederm@xmission.com>,
kexec mailing list <kexec@lists.infradead.org>,
LKML <linux-kernel@vger.kernel.org>,
Jonathan Corbet <corbet@lwn.net>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>,
Linux ARM <linux-arm-kernel@lists.infradead.org>,
Marc Zyngier <maz@kernel.org>,
Vladimir Murzin <vladimir.murzin@arm.com>,
Matthias Brugger <matthias.bgg@gmail.com>,
Bhupesh Sharma <bhsharma@redhat.com>,
linux-mm <linux-mm@kvack.org>,
Mark Rutland <mark.rutland@arm.com>,
steve.capper@arm.com, rfontana@redhat.com,
Thomas Gleixner <tglx@linutronix.de>,
Selin Dag <selindag@gmail.com>
Subject: Re: [PATCH v9 10/18] arm64: kexec: cpu_soft_restart change argument types
Date: Fri, 22 Jan 2021 20:14:49 -0500 [thread overview]
Message-ID: <CA+CK2bDJeYPzGyVkRJu2AOkvV8SJ=ea3jbAZtho8_VA416kZ4A@mail.gmail.com> (raw)
In-Reply-To: <e6faa23d-27a8-838a-33ef-2a6ad8a5c746@arm.com>
On Wed, Apr 29, 2020 at 1:01 PM James Morse <james.morse@arm.com> wrote:
>
> Hi Pavel,
>
> On 26/03/2020 03:24, Pavel Tatashin wrote:
> > Change argument types from unsigned long to a more descriptive
> > phys_addr_t.
>
> For 'entry', which is a physical addresses, sure...
>
> > diff --git a/arch/arm64/kernel/cpu-reset.h b/arch/arm64/kernel/cpu-reset.h
> > index ed50e9587ad8..38cbd4068019 100644
> > --- a/arch/arm64/kernel/cpu-reset.h
> > +++ b/arch/arm64/kernel/cpu-reset.h
> > @@ -10,17 +10,17 @@
> >
> > #include <asm/virt.h>
> >
> > -void __cpu_soft_restart(unsigned long el2_switch, unsigned long entry,
> > - unsigned long arg0, unsigned long arg1, unsigned long arg2);
>
> > +void __cpu_soft_restart(phys_addr_t el2_switch, phys_addr_t entry,
> > + phys_addr_t arg0, phys_addr_t arg1, phys_addr_t arg2);
>
> This looks weird because its re-using the hyp-stub API, because it might call the hyp-stub
> from the idmap. entry is passed in, so this isn't tied to kexec. Without tying it to
> kexec, how do you know arg2 is a physical address?
> I think it tried to be re-usable because 32bit has more users for this.
I will drop this patch. It was intended as a cleanup from suggestions
in earlier versions of this series, but I see it is not really needed.
Thank you,
Pasha
next prev parent reply other threads:[~2021-01-23 1:15 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-26 3:24 [PATCH v9 00/18] arm64: MMU enabled kexec relocation Pavel Tatashin
2020-03-26 3:24 ` [PATCH v9 01/18] arm64: kexec: make dtb_mem always enabled Pavel Tatashin
2020-04-29 17:00 ` James Morse
2021-01-23 0:17 ` Pavel Tatashin
2020-03-26 3:24 ` [PATCH v9 02/18] arm64: hibernate: move page handling function to new trans_pgd.c Pavel Tatashin
2020-04-29 17:00 ` James Morse
2021-01-23 0:18 ` Pavel Tatashin
2020-03-26 3:24 ` [PATCH v9 03/18] arm64: trans_pgd: make trans_pgd_map_page generic Pavel Tatashin
2020-04-29 17:01 ` James Morse
2021-01-22 21:52 ` Pavel Tatashin
2020-03-26 3:24 ` [PATCH v9 04/18] arm64: trans_pgd: pass allocator trans_pgd_create_copy Pavel Tatashin
2020-04-29 17:01 ` James Morse
2021-01-23 0:20 ` Pavel Tatashin
2020-03-26 3:24 ` [PATCH v9 05/18] arm64: trans_pgd: pass NULL instead of init_mm to *_populate functions Pavel Tatashin
2020-04-29 17:01 ` James Morse
2021-01-23 0:22 ` Pavel Tatashin
2020-03-26 3:24 ` [PATCH v9 06/18] arm64: mm: Always update TCR_EL1 from __cpu_set_tcr_t0sz() Pavel Tatashin
2020-03-26 3:24 ` [PATCH v9 07/18] arm64: trans_pgd: hibernate: idmap the single page that holds the copy page routines Pavel Tatashin
2020-04-29 17:01 ` James Morse
2021-01-23 0:35 ` Pavel Tatashin
2020-03-26 3:24 ` [PATCH v9 08/18] arm64: kexec: move relocation function setup Pavel Tatashin
2020-04-29 17:01 ` James Morse
2021-01-23 1:01 ` Pavel Tatashin
2020-03-26 3:24 ` [PATCH v9 09/18] arm64: kexec: call kexec_image_info only once Pavel Tatashin
2020-04-29 17:01 ` James Morse
2020-03-26 3:24 ` [PATCH v9 10/18] arm64: kexec: cpu_soft_restart change argument types Pavel Tatashin
2020-04-29 17:01 ` James Morse
2021-01-23 1:14 ` Pavel Tatashin [this message]
2020-03-26 3:24 ` [PATCH v9 11/18] arm64: kexec: arm64_relocate_new_kernel clean-ups Pavel Tatashin
2020-05-07 16:22 ` James Morse
2020-03-26 3:24 ` [PATCH v9 12/18] arm64: kexec: arm64_relocate_new_kernel don't use x0 as temp Pavel Tatashin
2020-05-07 16:22 ` James Morse
2020-03-26 3:24 ` [PATCH v9 13/18] arm64: kexec: add expandable argument to relocation function Pavel Tatashin
2020-05-07 16:22 ` James Morse
2021-01-23 2:49 ` Pavel Tatashin
2020-03-26 3:24 ` [PATCH v9 14/18] arm64: kexec: offset for " Pavel Tatashin
2020-05-07 16:22 ` James Morse
2020-03-26 3:24 ` [PATCH v9 15/18] arm64: kexec: kexec EL2 vectors Pavel Tatashin
2020-04-29 17:35 ` Marc Zyngier
2021-01-25 19:07 ` Pavel Tatashin
2020-05-07 16:21 ` James Morse
2020-03-26 3:24 ` [PATCH v9 16/18] arm64: kexec: configure trans_pgd page table for kexec Pavel Tatashin
2020-05-07 16:22 ` James Morse
2020-03-26 3:24 ` [PATCH v9 17/18] arm64: kexec: enable MMU during kexec relocation Pavel Tatashin
2020-03-26 3:24 ` [PATCH v9 18/18] arm64: kexec: remove head from relocation argument Pavel Tatashin
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