From: Giancarlo Ferrari <giancarlo.ferrari89@gmail.com> To: Russell King - ARM Linux admin <linux@armlinux.org.uk> Cc: Mark Rutland <mark.rutland@arm.com>, linux-kernel@vger.kernel.org, penberg@kernel.org, geert@linux-m68k.org, linux-arm-kernel@lists.infradead.org, akpm@linux-foundation.org, rppt@kernel.org, giancarlo.ferrari@nokia.com Subject: Re: [PATCH] ARM: kexec: Fix panic after TLB are invalidated Date: Thu, 4 Feb 2021 23:48:42 +0000 [thread overview] Message-ID: <20210204234841.GA19339@p4> (raw) In-Reply-To: <20210201202742.GA17243@p4> Hi all, On Mon, Feb 01, 2021 at 10:18:26PM +0000, Giancarlo Ferrari wrote: > Russell, > > On Mon, Feb 01, 2021 at 08:16:33PM +0000, Russell King - ARM Linux admin wrote: > > On Mon, Feb 01, 2021 at 08:07:37PM +0000, Giancarlo Ferrari wrote: > > > Hi, > > > > Hi, > > > > > Why we should align 3 ? For the fncpy I suppose. > > > > Slightly arbitary really - it gives a nice 8-byte alignment to the data. > > .align 2 would also be sufficient. > > > > > I don't know now how to proceed now, as you (Mark and you) do completely > > > the patch. > > > > Please can you test my patch and let us know if it solves your problem > > (or even if it works! I haven't tested it beyond build-testing.) > > I have tested your patch and it works. I have tested using kexec -l/kexec -e. Considering that .text var are no more written, I assume the issue is gone. > > sure, unfortunately due to restriction, I hope to test it by the end of the > week. I hope there will be no rush. Otherwise, please let me know. > > > > You see is my first kernel patch submission :) . > > > > Yay. Sorry for giving you a different patch - Mark is quite right that > > there's a better solution to this problem, which is eliminating the > > set_kernel_text_rw() call. The only reason I cooked up the patch was > > doing that would be more in-depth (as you can see from the increased > > size of the patch.) > > > > I definitely agree with you. > > > -- > > RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ > > FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last! > > Thanks again, > > > GF Can I ask about having it integrated ? Thanks in advance, GF
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From: Giancarlo Ferrari <giancarlo.ferrari89@gmail.com> To: Russell King - ARM Linux admin <linux@armlinux.org.uk> Cc: Mark Rutland <mark.rutland@arm.com>, linux-kernel@vger.kernel.org, penberg@kernel.org, geert@linux-m68k.org, rppt@kernel.org, akpm@linux-foundation.org, linux-arm-kernel@lists.infradead.org, giancarlo.ferrari@nokia.com Subject: Re: [PATCH] ARM: kexec: Fix panic after TLB are invalidated Date: Thu, 4 Feb 2021 23:48:42 +0000 [thread overview] Message-ID: <20210204234841.GA19339@p4> (raw) In-Reply-To: <20210201202742.GA17243@p4> Hi all, On Mon, Feb 01, 2021 at 10:18:26PM +0000, Giancarlo Ferrari wrote: > Russell, > > On Mon, Feb 01, 2021 at 08:16:33PM +0000, Russell King - ARM Linux admin wrote: > > On Mon, Feb 01, 2021 at 08:07:37PM +0000, Giancarlo Ferrari wrote: > > > Hi, > > > > Hi, > > > > > Why we should align 3 ? For the fncpy I suppose. > > > > Slightly arbitary really - it gives a nice 8-byte alignment to the data. > > .align 2 would also be sufficient. > > > > > I don't know now how to proceed now, as you (Mark and you) do completely > > > the patch. > > > > Please can you test my patch and let us know if it solves your problem > > (or even if it works! I haven't tested it beyond build-testing.) > > I have tested your patch and it works. I have tested using kexec -l/kexec -e. Considering that .text var are no more written, I assume the issue is gone. > > sure, unfortunately due to restriction, I hope to test it by the end of the > week. I hope there will be no rush. Otherwise, please let me know. > > > > You see is my first kernel patch submission :) . > > > > Yay. Sorry for giving you a different patch - Mark is quite right that > > there's a better solution to this problem, which is eliminating the > > set_kernel_text_rw() call. The only reason I cooked up the patch was > > doing that would be more in-depth (as you can see from the increased > > size of the patch.) > > > > I definitely agree with you. > > > -- > > RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ > > FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last! > > Thanks again, > > > GF Can I ask about having it integrated ? Thanks in advance, GF _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2021-02-04 23:49 UTC|newest] Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-02-01 0:44 [PATCH] ARM: kexec: Fix panic after TLB are invalidated Giancarlo Ferrari 2021-02-01 0:44 ` Giancarlo Ferrari 2021-02-01 11:34 ` Russell King - ARM Linux admin 2021-02-01 11:34 ` Russell King - ARM Linux admin 2021-02-01 12:47 ` Mark Rutland 2021-02-01 12:47 ` Mark Rutland 2021-02-01 13:03 ` Russell King - ARM Linux admin 2021-02-01 13:03 ` Russell King - ARM Linux admin 2021-02-01 13:57 ` Mark Rutland 2021-02-01 13:57 ` Mark Rutland 2021-02-01 16:08 ` Russell King - ARM Linux admin 2021-02-01 16:08 ` Russell King - ARM Linux admin 2021-02-01 16:32 ` Mark Rutland 2021-02-01 16:32 ` Mark Rutland 2021-02-01 16:37 ` Russell King - ARM Linux admin 2021-02-01 16:37 ` Russell King - ARM Linux admin 2021-02-01 20:07 ` Giancarlo Ferrari 2021-02-01 20:07 ` Giancarlo Ferrari 2021-02-01 20:16 ` Russell King - ARM Linux admin 2021-02-01 20:16 ` Russell King - ARM Linux admin 2021-02-01 22:18 ` Giancarlo Ferrari 2021-02-01 22:18 ` Giancarlo Ferrari 2021-02-04 23:48 ` Giancarlo Ferrari [this message] 2021-02-04 23:48 ` Giancarlo Ferrari 2021-02-05 0:18 ` Russell King - ARM Linux admin 2021-02-05 0:18 ` Russell King - ARM Linux admin 2021-02-05 0:40 ` Giancarlo Ferrari 2021-02-05 0:40 ` Giancarlo Ferrari 2021-02-05 0:45 ` Giancarlo Ferrari 2021-02-05 0:45 ` Giancarlo Ferrari 2021-02-05 9:44 ` Russell King - ARM Linux admin 2021-02-05 9:44 ` Russell King - ARM Linux admin 2021-02-05 14:36 ` Giancarlo Ferrari 2021-02-05 14:36 ` Giancarlo Ferrari 2021-02-01 14:39 ` Giancarlo Ferrari 2021-02-01 14:39 ` Giancarlo Ferrari 2021-02-01 15:30 ` Mark Rutland 2021-02-01 15:30 ` Mark Rutland 2021-02-01 19:09 ` Giancarlo Ferrari 2021-02-01 19:09 ` Giancarlo Ferrari -- strict thread matches above, loose matches on Subject: below -- 2021-01-12 16:49 Giancarlo Ferrari 2021-01-12 16:49 ` Giancarlo Ferrari 2021-02-01 10:10 ` Giancarlo Ferrari 2021-02-01 10:10 ` Giancarlo Ferrari
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