From: Ayan Kumar Halder <ayan.kumar.halder@amd.com>
To: <xen-devel@lists.xenproject.org>
Cc: Michal Orzel <michal.orzel@amd.com>,
Stefano Stabellini <sstabellini@kernel.org>,
Julien Grall <julien@xen.org>,
Bertrand Marquis <bertrand.marquis@arm.com>,
Volodymyr Babchuk <Volodymyr_Babchuk@epam.com>,
Ayan Kumar Halder <ayan.kumar.halder@amd.com>
Subject: [PATCH v2 4/4] xen/arm32: Allow ARM_PA_BITS_40 only if !MPU
Date: Thu, 13 Mar 2025 18:28:50 +0000 [thread overview]
Message-ID: <20250313182850.1527052-5-ayan.kumar.halder@amd.com> (raw)
In-Reply-To: <20250313182850.1527052-1-ayan.kumar.halder@amd.com>
From: Michal Orzel <michal.orzel@amd.com>
ArmV8-R AArch32 does not support LPAE. The reason being PMSAv8-32
supports 32-bit physical address only.
Signed-off-by: Michal Orzel <michal.orzel@amd.com>
Signed-off-by: Ayan Kumar Halder <ayan.kumar.halder@amd.com>
---
Changes from
v1 - 1. New patch.
xen/arch/arm/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/xen/arch/arm/Kconfig b/xen/arch/arm/Kconfig
index 89c099ff46..b413e8399b 100644
--- a/xen/arch/arm/Kconfig
+++ b/xen/arch/arm/Kconfig
@@ -58,7 +58,7 @@ config ARM_PA_BITS_32
config ARM_PA_BITS_40
bool "40-bit"
- depends on ARM_32
+ depends on ARM_32 && !MPU
endchoice
config PADDR_BITS
--
2.25.1
prev parent reply other threads:[~2025-03-13 18:33 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-13 18:28 [PATCH v2 0/4] Enable early bootup of Armv8-R AArch32 systems Ayan Kumar Halder
2025-03-13 18:28 ` [PATCH v2 1/4] xen/arm32: Initialize MM specific registers in enable_mmu Ayan Kumar Halder
2025-03-17 11:40 ` Orzel, Michal
2025-03-19 11:48 ` Ayan Kumar Halder
2025-03-13 18:28 ` [PATCH v2 2/4] xen/arm32: mpu: Create boot-time MPU protection regions Ayan Kumar Halder
2025-03-17 11:56 ` Orzel, Michal
2025-03-13 18:28 ` [PATCH v2 3/4] xen/arm32: mpu: Implement a dummy enable_secondary_cpu_mm Ayan Kumar Halder
2025-03-13 18:28 ` Ayan Kumar Halder [this message]
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