Patch "arm64: Unconditionally set virtual cpu id registers" has been added to the 5.11-stable tree

From: <gregkh@linuxfoundation.org>
To: catalin.marinas@arm.com, dbrazdil@google.com,
	gregkh@linuxfoundation.org, linux-arm-kernel@lists.infradead.org,
	maz@kernel.org, vladimir.murzin@arm.com, will@kernel.org
Cc: <stable-commits@vger.kernel.org>
Subject: Patch "arm64: Unconditionally set virtual cpu id registers" has been added to the 5.11-stable tree
Date: Fri, 19 Mar 2021 10:45:28 +0100	[thread overview]
Message-ID: <161614712819275@kroah.com> (raw)
In-Reply-To: <20210316134319.89472-1-vladimir.murzin@arm.com>


This is a note to let you know that I've just added the patch titled

    arm64: Unconditionally set virtual cpu id registers

to the 5.11-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     arm64-unconditionally-set-virtual-cpu-id-registers.patch
and it can be found in the queue-5.11 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


From vladimir.murzin@arm.com  Fri Mar 19 10:43:20 2021
From: Vladimir Murzin <vladimir.murzin@arm.com>
Date: Tue, 16 Mar 2021 13:43:19 +0000
Subject: arm64: Unconditionally set virtual cpu id registers
To: linux-arm-kernel@lists.infradead.org, stable@vger.kernel.org
Cc: catalin.marinas@arm.com, will@kernel.org, maz@kernel.org, dbrazdil@google.com
Message-ID: <20210316134319.89472-1-vladimir.murzin@arm.com>

From: Vladimir Murzin <vladimir.murzin@arm.com>

Commit 78869f0f0552 ("arm64: Extract parts of el2_setup into a macro")
reorganized el2 setup in such way that virtual cpu id registers set
only in nVHE, yet they used (and need) to be set irrespective VHE
support.

Fixes: 78869f0f0552 ("arm64: Extract parts of el2_setup into a macro")
Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Acked-by: Will Deacon <will@kernel.org>
Reviewed-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/arm64/include/asm/el2_setup.h |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/arch/arm64/include/asm/el2_setup.h
+++ b/arch/arm64/include/asm/el2_setup.h
@@ -111,7 +111,7 @@
 .endm
 
 /* Virtual CPU ID registers */
-.macro __init_el2_nvhe_idregs
+.macro __init_el2_idregs
 	mrs	x0, midr_el1
 	mrs	x1, mpidr_el1
 	msr	vpidr_el2, x0
@@ -163,6 +163,7 @@
 	__init_el2_stage2
 	__init_el2_gicv3
 	__init_el2_hstr
+	__init_el2_idregs
 
 	/*
 	 * When VHE is not in use, early init of EL2 needs to be done here.
@@ -171,7 +172,6 @@
 	 * will be done via the _EL1 system register aliases in __cpu_setup.
 	 */
 .ifeqs "\mode", "nvhe"
-	__init_el2_nvhe_idregs
 	__init_el2_nvhe_cptr
 	__init_el2_nvhe_sve
 	__init_el2_nvhe_prepare_eret


Patches currently in stable-queue which might be from vladimir.murzin@arm.com are

queue-5.11/arm64-unconditionally-set-virtual-cpu-id-registers.patch

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