From: Ayan Kumar Halder <ayan.kumar.halder@amd.com>
To: <xen-devel@lists.xenproject.org>
Cc: Ayan Kumar Halder <ayan.kumar.halder@amd.com>,
Stefano Stabellini <sstabellini@kernel.org>,
Julien Grall <julien@xen.org>,
Bertrand Marquis <bertrand.marquis@arm.com>,
Michal Orzel <michal.orzel@amd.com>,
"Volodymyr Babchuk" <Volodymyr_Babchuk@epam.com>
Subject: [PATCH 5/5] xen/arm: mpu: Implement a dummy enable_secondary_cpu_mm (arm32)
Date: Tue, 4 Feb 2025 19:23:57 +0000 [thread overview]
Message-ID: <20250204192357.1862264-6-ayan.kumar.halder@amd.com> (raw)
In-Reply-To: <20250204192357.1862264-1-ayan.kumar.halder@amd.com>
Secondary cpus initialization is not yet supported. Thus, we print an
appropriate message and put the secondary cpus in WFE state.
Signed-off-by: Ayan Kumar Halder <ayan.kumar.halder@amd.com>
---
xen/arch/arm/arm32/mpu/head.S | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/xen/arch/arm/arm32/mpu/head.S b/xen/arch/arm/arm32/mpu/head.S
index 4aad3c6b5d..49ab5fc9c0 100644
--- a/xen/arch/arm/arm32/mpu/head.S
+++ b/xen/arch/arm/arm32/mpu/head.S
@@ -156,6 +156,16 @@ FUNC(enable_boot_cpu_mm)
ret
END(enable_boot_cpu_mm)
+/*
+ * We don't yet support secondary CPUs bring-up. Implement a dummy helper to
+ * please the common code.
+ */
+ENTRY(enable_secondary_cpu_mm)
+ PRINT("- SMP not enabled yet -\r\n")
+1: wfe
+ b 1b
+ENDPROC(enable_secondary_cpu_mm)
+
/*
* Local variables:
* mode: ASM
--
2.25.1
next prev parent reply other threads:[~2025-02-04 19:24 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-02-04 19:23 [PATCH 0/5] Enable early bootup of AArch32 MPU systems Ayan Kumar Halder
2025-02-04 19:23 ` [PATCH 1/5] xen/arm: mpu: Ensure that the page size is 4KB (arm32) Ayan Kumar Halder
2025-02-06 14:35 ` Luca Fancellu
2025-02-25 16:16 ` Julien Grall
2025-02-04 19:23 ` [PATCH 2/5] xen/arm: mpu: Enclose access to MMU specific registers under CONFIG_MMU (arm32) Ayan Kumar Halder
2025-02-06 14:48 ` Luca Fancellu
2025-02-25 16:24 ` Julien Grall
2025-02-04 19:23 ` [PATCH 3/5] xen/arm: mpu: Move some of the definitions to common file Ayan Kumar Halder
2025-02-06 15:01 ` Luca Fancellu
2025-02-25 22:08 ` Julien Grall
2025-02-26 8:28 ` Luca Fancellu
2025-02-28 9:22 ` Julien Grall
2025-02-28 10:34 ` Ayan Kumar Halder
2025-03-04 13:09 ` Luca Fancellu
2025-02-04 19:23 ` [PATCH 4/5] xen/arm: mpu: Create boot-time MPU protection regions (arm32) Ayan Kumar Halder
2025-02-06 15:29 ` Luca Fancellu
2025-02-06 17:34 ` Ayan Kumar Halder
2025-02-04 19:23 ` Ayan Kumar Halder [this message]
2025-02-06 15:30 ` [PATCH 5/5] xen/arm: mpu: Implement a dummy enable_secondary_cpu_mm (arm32) Luca Fancellu
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