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Re: [PATCH v2 31/40] xen/mpu: disable FIXMAP in MPU system
- To: Jan Beulich <jbeulich@xxxxxxxx>, Penny Zheng <Penny.Zheng@xxxxxxx>
- From: Julien Grall <julien@xxxxxxx>
- Date: Thu, 9 Feb 2023 11:01:01 +0000
- Cc: wei.chen@xxxxxxx, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, George Dunlap <george.dunlap@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Thu, 09 Feb 2023 11:01:14 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
Hi,
On 13/01/2023 10:10, Jan Beulich wrote:
On 13.01.2023 06:29, Penny Zheng wrote:
--- a/xen/arch/arm/Kconfig
+++ b/xen/arch/arm/Kconfig
@@ -13,9 +13,10 @@ config ARM
def_bool y
select HAS_ALTERNATIVE if !ARM_V8R
select HAS_DEVICE_TREE
+ select HAS_FIXMAP if !ARM_V8R
select HAS_PASSTHROUGH
select HAS_PDX
- select HAS_PMAP
+ select HAS_PMAP if !ARM_V8R
select IOMMU_FORCE_PT_SHARE
select HAS_VMAP if !ARM_V8R
Thinking about it - wouldn't it make sense to fold HAS_VMAP and HAS_FIXMAP
into a single HAS_MMU?
I think it would make sense.
Furthermore, this patch would be better towards the start of the series.
Cheers,
--
Julien Grall
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