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
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
>
On 13.01.2023 06:29, Penny Zheng wrote:
> --- a/xen/common/Kconfig
> +++ b/xen/common/Kconfig
> @@ -43,6 +43,9 @@ config HAS_EX_TABLE
> config HAS_FAST_MULTIPLY
> bool
>
> +config HAS_FIXMAP
> + bool
I think it'll end up misleading if this option is not selected by x86
as well. So
FIXMAP in MMU system is used to do special-purpose 4K mapping, like
mapping early UART, temporarily mapping source codes for copy and paste
(copy_from_paddr), ect. As there is no VMSA in MPU system, we do not
support FIXMAP in MPU system.
We deine !CONFIG_HAS_FIXMAP to provide empty stubbers for
