From: Pratyush Anand <panand@redhat.com>
To: Geoff Levand <geoff@infradead.org>
Cc: Mark Rutland <mark.rutland@arm.com>,
marc.zyngier@arm.com, kexec@lists.infradead.org,
Will Deacon <will.deacon@arm.com>,
AKASHI Takahiro <takahiro.akashi@linaro.org>,
christoffer.dall@linaro.org,
Catalin Marinas <catalin.marinas@arm.com>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v12 08/16] arm64/kexec: Add core kexec support
Date: Wed, 16 Dec 2015 12:48:04 +0530 [thread overview]
Message-ID: <20151216071804.GI4674@dhcppc13.redhat.com> (raw)
In-Reply-To: <1450224870.24127.130.camel@infradead.org>
On 15/12/2015:04:14:30 PM, Geoff Levand wrote:
> On Tue, 2015-12-15 at 18:29 +0000, Will Deacon wrote:
> > > +> > > > * Copy arm64_relocate_new_kernel to the reboot_code_buffer for use
> > > +> > > > * after the kernel is shut down.
> > > +> > > > */
> > > +> > > > memcpy(reboot_code_buffer, arm64_relocate_new_kernel,
> > > +> > > > > > arm64_relocate_new_kernel_size);
> >
> > At which point does the I-cache get invalidated for this?
>
> I'll add a call to flush_icache_range() for reboot_code_buffer. I
> think that should do it.
We execute arm64_relocate_new_kernel() code with I-cache disabled. So, do we
really need to invalidate I-cache?
~Pratyush
_______________________________________________
kexec mailing list
kexec@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/kexec
WARNING: multiple messages have this Message-ID (diff)
From: panand@redhat.com (Pratyush Anand)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v12 08/16] arm64/kexec: Add core kexec support
Date: Wed, 16 Dec 2015 12:48:04 +0530 [thread overview]
Message-ID: <20151216071804.GI4674@dhcppc13.redhat.com> (raw)
In-Reply-To: <1450224870.24127.130.camel@infradead.org>
On 15/12/2015:04:14:30 PM, Geoff Levand wrote:
> On Tue, 2015-12-15 at 18:29 +0000, Will Deacon wrote:
> > > +> > > > * Copy arm64_relocate_new_kernel to the reboot_code_buffer for use
> > > +> > > > * after the kernel is shut down.
> > > +> > > > */
> > > +> > > > memcpy(reboot_code_buffer, arm64_relocate_new_kernel,
> > > +> > > > > > arm64_relocate_new_kernel_size);
> >
> > At which point does the I-cache get invalidated for this?
>
> I'll add a call to flush_icache_range() for reboot_code_buffer. I
> think that should do it.
We execute arm64_relocate_new_kernel() code with I-cache disabled. So, do we
really need to invalidate I-cache?
~Pratyush
next prev parent reply other threads:[~2015-12-16 7:18 UTC|newest]
Thread overview: 178+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-24 22:25 [PATCH v12 00/16] arm64 kexec kernel patches v12 Geoff Levand
2015-11-24 22:25 ` Geoff Levand
2015-11-24 22:25 ` [PATCH v12 03/16] arm64: Add new hcall HVC_CALL_FUNC Geoff Levand
2015-11-24 22:25 ` Geoff Levand
2015-11-24 22:25 ` [PATCH v12 02/16] arm64: Convert hcalls to use HVC immediate value Geoff Levand
2015-11-24 22:25 ` Geoff Levand
2015-11-24 22:25 ` [PATCH v12 05/16] arm64: Add back cpu_reset routines Geoff Levand
2015-11-24 22:25 ` Geoff Levand
2015-11-27 14:19 ` Marc Zyngier
2015-11-27 14:19 ` Marc Zyngier
2015-11-30 5:28 ` Pratyush Anand
2015-11-30 5:28 ` Pratyush Anand
2015-11-30 10:40 ` Marc Zyngier
2015-11-30 10:40 ` Marc Zyngier
2015-12-02 22:57 ` Geoff Levand
2015-12-02 22:57 ` Geoff Levand
2015-12-03 9:32 ` Will Deacon
2015-12-03 9:32 ` Will Deacon
2015-12-10 0:49 ` Geoff Levand
2015-12-10 0:49 ` Geoff Levand
2015-12-10 10:17 ` Will Deacon
2015-12-10 10:17 ` Will Deacon
2015-11-30 20:03 ` Geoff Levand
2015-11-30 20:03 ` Geoff Levand
2015-12-01 9:38 ` Marc Zyngier
2015-12-01 9:38 ` Marc Zyngier
2015-11-24 22:25 ` [PATCH v12 07/16] Revert "arm64: remove dead code" Geoff Levand
2015-11-24 22:25 ` Geoff Levand
2015-11-24 22:25 ` [PATCH v12 04/16] arm64: kvm: allows kvm cpu hotplug Geoff Levand
2015-11-24 22:25 ` Geoff Levand
2015-11-27 13:54 ` Marc Zyngier
2015-11-27 13:54 ` Marc Zyngier
2015-12-02 22:40 ` Ashwin Chaugule
2015-12-02 22:40 ` Ashwin Chaugule
2015-12-03 13:55 ` Ashwin Chaugule
2015-12-03 13:55 ` Ashwin Chaugule
2015-12-03 13:58 ` Marc Zyngier
2015-12-03 13:58 ` Marc Zyngier
2015-12-10 18:31 ` Geoff Levand
2015-12-10 18:31 ` Geoff Levand
2015-12-11 16:31 ` Will Deacon
2015-12-11 16:31 ` Will Deacon
2015-12-15 8:48 ` AKASHI Takahiro
2015-12-15 8:48 ` AKASHI Takahiro
2015-12-10 18:44 ` Shi, Yang
2015-12-10 18:44 ` Shi, Yang
2015-12-11 8:09 ` AKASHI Takahiro
2015-12-11 8:09 ` AKASHI Takahiro
2015-12-14 18:00 ` Shi, Yang
2015-12-14 18:00 ` Shi, Yang
2015-12-11 8:06 ` AKASHI Takahiro
2015-12-11 8:06 ` AKASHI Takahiro
2015-12-11 13:00 ` Shanker Donthineni
2015-12-11 13:00 ` Shanker Donthineni
2015-12-11 16:28 ` Marc Zyngier
2015-12-11 16:28 ` Marc Zyngier
2015-12-11 18:00 ` Shanker Donthineni
2015-12-11 18:00 ` Shanker Donthineni
2015-12-11 18:11 ` Marc Zyngier
2015-12-11 18:11 ` Marc Zyngier
2015-12-11 19:11 ` Shanker Donthineni
2015-12-11 19:11 ` Shanker Donthineni
2015-12-11 20:13 ` Ashwin Chaugule
2015-12-11 20:13 ` Ashwin Chaugule
2015-12-14 7:33 ` AKASHI Takahiro
2015-12-14 7:33 ` AKASHI Takahiro
2015-12-14 17:33 ` Marc Zyngier
2015-12-14 17:33 ` Marc Zyngier
2015-12-15 7:51 ` AKASHI Takahiro
2015-12-15 7:51 ` AKASHI Takahiro
2015-12-15 8:45 ` Marc Zyngier
2015-12-15 8:45 ` Marc Zyngier
2015-12-15 9:51 ` AKASHI Takahiro
2015-12-15 9:51 ` AKASHI Takahiro
2015-12-15 10:13 ` Marc Zyngier
2015-12-15 10:13 ` Marc Zyngier
2015-11-24 22:25 ` [PATCH v12 01/16] arm64: Fold proc-macros.S into assembler.h Geoff Levand
2015-11-24 22:25 ` Geoff Levand
2015-11-24 22:25 ` [PATCH v12 06/16] Revert "arm64: mm: remove unused cpu_set_idmap_tcr_t0sz function" Geoff Levand
2015-11-24 22:25 ` Geoff Levand
2015-11-24 22:25 ` [PATCH v12 09/16] arm64/kexec: Add pr_devel output Geoff Levand
2015-11-24 22:25 ` Geoff Levand
2015-12-15 17:15 ` Will Deacon
2015-12-15 17:15 ` Will Deacon
2015-12-16 0:45 ` Geoff Levand
2015-12-16 0:45 ` Geoff Levand
2015-12-16 0:46 ` [PATCH v12.4] arm64/kexec: Add pr_debug output Geoff Levand
2015-12-16 0:46 ` Geoff Levand
2015-11-24 22:25 ` [PATCH v12 12/16] arm64: kdump: implement machine_crash_shutdown() Geoff Levand
2015-11-24 22:25 ` Geoff Levand
2015-11-27 14:39 ` Marc Zyngier
2015-11-27 14:39 ` Marc Zyngier
2015-12-10 11:34 ` AKASHI Takahiro
2015-12-10 11:34 ` AKASHI Takahiro
2015-12-10 11:44 ` Marc Zyngier
2015-12-10 11:44 ` Marc Zyngier
2015-12-10 12:55 ` AKASHI Takahiro
2015-12-10 12:55 ` AKASHI Takahiro
2015-12-10 13:43 ` Marc Zyngier
2015-12-10 13:43 ` Marc Zyngier
2015-12-03 4:15 ` Pratyush Anand
2015-12-03 4:15 ` Pratyush Anand
2015-12-10 11:42 ` AKASHI Takahiro
2015-12-10 11:42 ` AKASHI Takahiro
2015-12-10 11:50 ` Pratyush Anand
2015-12-10 11:50 ` Pratyush Anand
2015-11-24 22:25 ` [PATCH v12 15/16] arm64: kdump: enable kdump in the arm64 defconfig Geoff Levand
2015-11-24 22:25 ` Geoff Levand
2015-11-24 22:25 ` [PATCH v12 16/16] arm64: kdump: relax BUG_ON() if more than one cpus are still active Geoff Levand
2015-11-24 22:25 ` Geoff Levand
2015-12-15 17:05 ` Will Deacon
2015-12-15 17:05 ` Will Deacon
2015-12-16 5:51 ` AKASHI Takahiro
2015-12-16 5:51 ` AKASHI Takahiro
2015-11-24 22:25 ` [PATCH v12 08/16] arm64/kexec: Add core kexec support Geoff Levand
2015-11-24 22:25 ` Geoff Levand
2015-11-27 13:13 ` Pratyush Anand
2015-11-27 13:13 ` Pratyush Anand
2015-11-30 18:51 ` Geoff Levand
2015-11-30 18:51 ` Geoff Levand
2015-12-01 2:16 ` Pratyush Anand
2015-12-01 2:16 ` Pratyush Anand
2015-12-01 18:32 ` Azriel Samson
2015-12-01 18:32 ` Azriel Samson
2015-12-02 22:49 ` Geoff Levand
2015-12-02 22:49 ` Geoff Levand
2015-12-03 4:37 ` Azriel Samson
2015-12-03 4:37 ` Azriel Samson
2015-12-03 19:56 ` Geoff Levand
2015-12-03 19:56 ` Geoff Levand
2015-12-04 0:39 ` Azriel Samson
2015-12-04 0:39 ` Azriel Samson
2015-12-04 3:54 ` Pratyush Anand
2015-12-04 3:54 ` Pratyush Anand
2015-12-07 18:47 ` Geoff Levand
2015-12-07 18:47 ` Geoff Levand
2015-12-03 6:09 ` Pratyush Anand
2015-12-03 6:09 ` Pratyush Anand
2015-12-01 19:03 ` Mark Rutland
2015-12-01 19:03 ` Mark Rutland
2015-12-02 21:08 ` Geoff Levand
2015-12-02 21:08 ` Geoff Levand
2015-12-03 16:06 ` Mark Rutland
2015-12-03 16:06 ` Mark Rutland
2015-12-15 18:29 ` Will Deacon
2015-12-15 18:29 ` Will Deacon
2015-12-16 0:14 ` Geoff Levand
2015-12-16 0:14 ` Geoff Levand
2015-12-16 7:18 ` Pratyush Anand [this message]
2015-12-16 7:18 ` Pratyush Anand
2015-12-16 9:30 ` James Morse
2015-12-16 9:30 ` James Morse
2015-12-16 10:32 ` Pratyush Anand
2015-12-16 10:32 ` Pratyush Anand
2015-12-16 0:14 ` [PATCH v12.4] " Geoff Levand
2015-12-16 0:14 ` Geoff Levand
2015-11-24 22:25 ` [PATCH v12 11/16] arm64: kdump: reserve memory for crash dump kernel Geoff Levand
2015-11-24 22:25 ` Geoff Levand
2015-12-15 17:29 ` Will Deacon
2015-12-15 17:29 ` Will Deacon
2015-12-16 5:19 ` AKASHI Takahiro
2015-12-16 5:19 ` AKASHI Takahiro
2015-12-16 7:36 ` Pratyush Anand
2015-12-16 7:36 ` Pratyush Anand
2015-11-24 22:25 ` [PATCH v12 14/16] arm64: kdump: update a kernel doc Geoff Levand
2015-11-24 22:25 ` Geoff Levand
2015-12-15 17:17 ` Will Deacon
2015-12-15 17:17 ` Will Deacon
2015-12-16 5:48 ` AKASHI Takahiro
2015-12-16 5:48 ` AKASHI Takahiro
2015-11-24 22:25 ` [PATCH v12 10/16] arm64/kexec: Enable kexec in the arm64 defconfig Geoff Levand
2015-11-24 22:25 ` Geoff Levand
2015-11-24 22:25 ` [PATCH v12 13/16] arm64: kdump: add kdump support Geoff Levand
2015-11-24 22:25 ` Geoff Levand
2015-12-15 17:45 ` Will Deacon
2015-12-15 17:45 ` Will Deacon
2015-12-16 5:41 ` AKASHI Takahiro
2015-12-16 5:41 ` AKASHI Takahiro
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