From: Luca Fancellu <Luca.Fancellu@arm.com>
To: Julien Grall <julien@xen.org>
Cc: Xen-devel <xen-devel@lists.xenproject.org>,
Julien Grall <jgrall@amazon.com>,
Stefano Stabellini <sstabellini@kernel.org>,
Bertrand Marquis <Bertrand.Marquis@arm.com>,
Volodymyr Babchuk <Volodymyr_Babchuk@epam.com>
Subject: Re: [PATCH v4 14/14] xen/arm64: smpboot: Directly switch to the runtime page-tables
Date: Fri, 13 Jan 2023 17:42:49 +0000 [thread overview]
Message-ID: <8A0AD684-FB21-46B3-A0C9-DE0BF67030D0@arm.com> (raw)
In-Reply-To: <20230113101136.479-15-julien@xen.org>
> On 13 Jan 2023, at 10:11, Julien Grall <julien@xen.org> wrote:
>
> From: Julien Grall <jgrall@amazon.com>
>
> Switching TTBR while the MMU is on is not safe. Now that the identity
> mapping will not clash with the rest of the memory layout, we can avoid
> creating temporary page-tables every time a CPU is brought up.
>
> The arm32 code will use a different approach. So this issue is for now
> only resolved on arm64.
>
> Signed-off-by: Julien Grall <jgrall@amazon.com>
> ----
> Changes in v4:
> - Somehow I forgot to send it in v3. So re-include it.
>
> Changes in v2:
> - Remove arm32 code
> ---
Reviewed-by: Luca Fancellu <luca.fancellu@arm.com>
I’ve also built for arm32/64 and test this patch (so this serie) on fvp, n1sdp, raspberry pi4, Juno,
booting Dom0 and creating/running/destroying some guests, on a first shot everything works.
Tested-by: Luca Fancellu <luca.fancellu@arm.com>
I’ve left the boards to test all night, so on Monday I will be 100% sure this serie
Is not introducing any issue.
next prev parent reply other threads:[~2023-01-13 17:43 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-13 10:11 [PATCH v4 00/14] xen/arm: Don't switch TTBR while the MMU is on Julien Grall
2023-01-13 10:11 ` [PATCH v4 01/14] xen/arm64: flushtlb: Reduce scope of barrier for local TLB flush Julien Grall
2023-01-13 11:36 ` Henry Wang
2023-01-13 10:11 ` [PATCH v4 02/14] xen/arm64: flushtlb: Implement the TLBI repeat workaround for TLB flush by VA Julien Grall
2023-01-13 13:22 ` Henry Wang
2023-01-13 17:56 ` Luca Fancellu
2023-01-16 8:36 ` Julien Grall
2023-01-13 10:11 ` [PATCH v4 03/14] xen/arm32: flushtlb: Reduce scope of barrier for local TLB flush Julien Grall
2023-01-13 13:46 ` Henry Wang
2023-01-13 10:11 ` [PATCH v4 04/14] xen/arm: flushtlb: Reduce scope of barrier for the TLB range flush Julien Grall
2023-01-13 13:53 ` Henry Wang
2023-01-13 10:11 ` [PATCH v4 05/14] xen/arm: Clean-up the memory layout Julien Grall
2023-01-13 13:57 ` Henry Wang
2023-01-24 19:30 ` Julien Grall
2023-01-13 10:11 ` [PATCH v4 06/14] xen/arm32: head: Replace "ldr rX, =<label>" with "mov_w rX, <label>" Julien Grall
2023-01-13 10:45 ` Michal Orzel
2023-01-13 10:47 ` Julien Grall
2023-01-14 0:51 ` Henry Wang
2023-01-13 10:11 ` [PATCH v4 07/14] xen/arm32: head: Jump to the runtime mapping in enable_mmu() Julien Grall
2023-01-14 1:33 ` Henry Wang
2023-01-13 10:11 ` [PATCH v4 08/14] xen/arm32: head: Introduce an helper to flush the TLBs Julien Grall
2023-01-13 10:46 ` Michal Orzel
2023-01-14 2:16 ` Henry Wang
2023-01-13 10:11 ` [PATCH v4 09/14] xen/arm32: head: Remove restriction where to load Xen Julien Grall
2023-01-13 14:58 ` Luca Fancellu
2023-01-16 8:43 ` Julien Grall
2023-01-16 8:14 ` Michal Orzel
2023-01-16 8:55 ` Julien Grall
2023-01-16 9:32 ` Michal Orzel
2023-01-13 10:11 ` [PATCH v4 10/14] xen/arm32: head: Widen the use of the temporary mapping Julien Grall
2023-01-13 15:37 ` Luca Fancellu
2023-01-16 8:20 ` Michal Orzel
2023-01-24 19:43 ` Julien Grall
2023-01-27 19:19 ` Julien Grall
2023-01-13 10:11 ` [PATCH v4 11/14] xen/arm64: Rework the memory layout Julien Grall
2023-01-13 15:58 ` Luca Fancellu
2023-01-16 8:46 ` Michal Orzel
2023-01-16 9:29 ` Julien Grall
2023-01-16 10:59 ` Michal Orzel
2023-01-13 10:11 ` [PATCH v4 12/14] xen/arm64: mm: Introduce helpers to prepare/enable/disable the identity mapping Julien Grall
2023-01-13 16:26 ` Luca Fancellu
2023-01-16 8:53 ` Michal Orzel
2023-01-27 19:30 ` Julien Grall
2023-01-13 10:11 ` [PATCH v4 13/14] xen/arm64: mm: Rework switch_ttbr() Julien Grall
2023-01-13 16:50 ` Luca Fancellu
2023-01-16 9:23 ` Michal Orzel
2023-01-16 9:32 ` Julien Grall
2023-01-13 10:11 ` [PATCH v4 14/14] xen/arm64: smpboot: Directly switch to the runtime page-tables Julien Grall
2023-01-13 17:42 ` Luca Fancellu [this message]
2023-01-16 9:06 ` Luca Fancellu
2023-01-27 19:39 ` Julien Grall
2023-01-24 19:35 ` [PATCH v4 00/14] xen/arm: Don't switch TTBR while the MMU is on Julien Grall
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