[PATCH v4 04/25] xen/Kconfig: introduce HAS_STATIC_MEMORY

[Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>]

Introduce HAS_STATIC_MEMORY so that STATIC_MEMORY can be enabled or
disabled on a per-architecture basis. ARM selects the new flag; RISC-V
does not, so CONFIG_STATIC_MEMORY is unavailable on RISC-V and
randconfig builds no longer require an explicit STATIC_MEMORY=n override
to avoid a compilation error.

Suggested-by: Jan Beulich <jbeulich@xxxxxxxx>
Signed-off-by: Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>
---
Changes in v4:
 - Reword the commit message to explain that HAS_STATIC_MEMORY allows
   STATIC_MEMORY to be {en,dis}abled per-arch, dropping the reference to
   guest_physmap_add_pages().
 - Split the STATIC_MEMORY dependency into two separate "depends on"
   lines.
---
Changes in v3:
 - New patch.
---
---
 xen/arch/arm/Kconfig | 1 +
 xen/common/Kconfig   | 4 ++++
 2 files changed, 5 insertions(+)

diff --git a/xen/arch/arm/Kconfig b/xen/arch/arm/Kconfig
index 683ab7d25a1e..d748404e82da 100644
--- a/xen/arch/arm/Kconfig
+++ b/xen/arch/arm/Kconfig
@@ -22,6 +22,7 @@ config ARM
        select HAS_GRANT_CACHE_FLUSH if GRANT_TABLE
        select HAS_SHARED_INFO
        select HAS_STACK_PROTECTOR
+       select HAS_STATIC_MEMORY
        select HAS_UBSAN
 
 config ARCH_DEFCONFIG
diff --git a/xen/common/Kconfig b/xen/common/Kconfig
index 8b48d84c79e8..5b289e444fa5 100644
--- a/xen/common/Kconfig
+++ b/xen/common/Kconfig
@@ -161,6 +161,9 @@ config HAS_SCHED_GRANULARITY
 config HAS_SHARED_INFO
        bool
 
+config HAS_STATIC_MEMORY
+       bool
+
 config HAS_SOFT_RESET
        bool
 
@@ -196,6 +199,7 @@ config NUMA
 
 config STATIC_MEMORY
        bool "Static Allocation Support (UNSUPPORTED)" if UNSUPPORTED
+       depends on HAS_STATIC_MEMORY
        depends on DOM0LESS_BOOT && HAS_DEVICE_TREE_DISCOVERY
        help
          Static Allocation refers to system or sub-system(domains) for
-- 
2.54.0