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From: Peter Maydell <peter.maydell@linaro.org>
To: Niek Linnenbank <nieklinnenbank@gmail.com>
Cc: Beniamino Galvani <b.galvani@gmail.com>,
	qemu-arm <qemu-arm@nongnu.org>,
	QEMU Developers <qemu-devel@nongnu.org>
Subject: Re: [PATCH 06/10] arm/arm-powerctl: set NSACR.{CP11, CP10} bits in arm_set_cpu_on()
Date: Fri, 6 Dec 2019 14:24:50 +0000
Message-ID: <CAFEAcA9XxH7zSmm6=KR-2ttfuqdauXxq05SWw++WgGEWw06NEQ@mail.gmail.com> (raw)
In-Reply-To: <20191202210947.3603-7-nieklinnenbank@gmail.com>

On Mon, 2 Dec 2019 at 21:10, Niek Linnenbank <nieklinnenbank@gmail.com> wrote:
>
> This change ensures that the FPU can be accessed in Non-Secure mode
> when the CPU core is reset using the arm_set_cpu_on() function call.
> The NSACR.{CP11,CP10} bits define the exception level required to
> access the FPU in Non-Secure mode. Without these bits set, the CPU
> will give an undefined exception trap on the first FPU access for the
> secondary cores under Linux.
>
> Fixes: fc1120a7f5
> Signed-off-by: Niek Linnenbank <nieklinnenbank@gmail.com>
> ---

Oops, another place where we failed to realise the ramifications
of making NSACR actually do something.

Since this is a bugfix I'm going to fish it out of this patchset
and apply it to target-arm.next with a cc: stable.

Thanks for the catch!

-- PMM


  reply index

Thread overview: 67+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-12-02 21:09 [PATCH 00/10] Add Allwinner H3 SoC and Orange Pi PC Machine Niek Linnenbank
2019-12-02 21:09 ` [PATCH 01/10] hw: arm: add Allwinner H3 System-on-Chip Niek Linnenbank
2019-12-04 16:53   ` Philippe Mathieu-Daudé
2019-12-04 20:44     ` Niek Linnenbank
2019-12-10  9:02   ` Philippe Mathieu-Daudé
2019-12-10 19:17     ` Niek Linnenbank
2019-12-02 21:09 ` [PATCH 02/10] hw: arm: add Xunlong Orange Pi PC machine Niek Linnenbank
2019-12-03  9:17   ` Philippe Mathieu-Daudé
2019-12-03 19:33     ` Niek Linnenbank
2019-12-04  9:03       ` Philippe Mathieu-Daudé
2019-12-04 19:50         ` Niek Linnenbank
2019-12-05 22:15     ` Niek Linnenbank
2019-12-06  5:41       ` Philippe Mathieu-Daudé
2019-12-06 22:15         ` Niek Linnenbank
2019-12-10  8:59           ` Philippe Mathieu-Daudé
2019-12-10 19:14             ` Niek Linnenbank
2019-12-02 21:09 ` [PATCH 03/10] arm: allwinner-h3: add Clock Control Unit Niek Linnenbank
2019-12-13  0:03   ` Philippe Mathieu-Daudé
2019-12-02 21:09 ` [PATCH 04/10] arm: allwinner-h3: add USB host controller Niek Linnenbank
2019-12-04 16:11   ` Aleksandar Markovic
2019-12-04 20:20     ` Niek Linnenbank
2019-12-10  7:56   ` Philippe Mathieu-Daudé
2019-12-10  8:29     ` Gerd Hoffmann
2019-12-10 19:11       ` Niek Linnenbank
2019-12-02 21:09 ` [PATCH 05/10] arm: allwinner-h3: add System Control module Niek Linnenbank
2019-12-13  0:09   ` Philippe Mathieu-Daudé
2019-12-15 23:27     ` Niek Linnenbank
2019-12-16  0:17       ` Philippe Mathieu-Daudé
2019-12-02 21:09 ` [PATCH 06/10] arm/arm-powerctl: set NSACR.{CP11, CP10} bits in arm_set_cpu_on() Niek Linnenbank
2019-12-06 14:24   ` Peter Maydell [this message]
2019-12-06 20:01     ` Niek Linnenbank
2019-12-13 20:52       ` Niek Linnenbank
2019-12-02 21:09 ` [PATCH 07/10] arm: allwinner-h3: add CPU Configuration module Niek Linnenbank
2019-12-02 21:09 ` [PATCH 08/10] arm: allwinner-h3: add Security Identifier device Niek Linnenbank
2019-12-06 14:27   ` Peter Maydell
2019-12-06 16:35     ` Philippe Mathieu-Daudé
2019-12-06 20:20       ` Niek Linnenbank
2019-12-02 21:09 ` [PATCH 09/10] arm: allwinner-h3: add SD/MMC host controller Niek Linnenbank
2019-12-11 22:34   ` Niek Linnenbank
2019-12-12 23:56     ` Philippe Mathieu-Daudé
2019-12-13 21:00       ` Niek Linnenbank
2019-12-14 13:59         ` Philippe Mathieu-Daudé
2019-12-14 20:32           ` Niek Linnenbank
2019-12-15 23:07       ` Niek Linnenbank
2019-12-16  0:14         ` Philippe Mathieu-Daudé
2019-12-16 19:46           ` Niek Linnenbank
2019-12-16 21:28             ` Philippe Mathieu-Daudé
2019-12-02 21:09 ` [PATCH 10/10] arm: allwinner-h3: add EMAC ethernet device Niek Linnenbank
2019-12-03  9:33   ` KONRAD Frederic
2019-12-03 19:41     ` Niek Linnenbank
2019-12-04 15:14     ` Philippe Mathieu-Daudé
2019-12-04 15:22       ` KONRAD Frederic
2019-12-03  8:47 ` [PATCH 00/10] Add Allwinner H3 SoC and Orange Pi PC Machine Philippe Mathieu-Daudé
2019-12-03 19:25   ` Niek Linnenbank
2019-12-10  8:40     ` Philippe Mathieu-Daudé
2019-12-09 21:37   ` Niek Linnenbank
2019-12-10  8:26     ` Philippe Mathieu-Daudé
2019-12-10 20:12       ` Niek Linnenbank
2019-12-12 23:07         ` Niek Linnenbank
2019-12-12 23:25           ` Philippe Mathieu-Daudé
2019-12-13 20:45             ` Niek Linnenbank
2019-12-03  9:02 ` Philippe Mathieu-Daudé
2019-12-03 19:32   ` Niek Linnenbank
2019-12-06 14:16     ` Peter Maydell
2019-12-09 22:24       ` Aleksandar Markovic
2019-12-10 10:34 ` KONRAD Frederic
2019-12-10 19:55   ` Niek Linnenbank

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