[PATCH V2 6.14.y 0/7] arm64/boot: Enable EL2 requirements for FEAT_PMUv3p9

[PATCH V2 6.14.y 0/7] arm64/boot: Enable EL2 requirements for FEAT_PMUv3p9

[Anshuman Khandual]

This series adds fine grained trap control in EL2 required for FEAT_PMUv3p9
registers like PMICNTR_EL0, PMICFILTR_EL0, and PMUACR_EL1 which are already
being used in the kernel. This is required to prevent their EL1 access trap
into EL2.

The following commits that enabled access into FEAT_PMUv3p9 registers have
already been merged upstream from 6.12 onwards.

d8226d8cfbaf ("perf: arm_pmuv3: Add support for Armv9.4 PMU instruction counter")
0bbff9ed8165 ("perf/arm_pmuv3: Add PMUv3.9 per counter EL0 access control")

The sysreg patches in this series are required for the final patch which
fixes the actual problem.

Changes in V2:

- Replaced [] with () for upstream commit reference across patches in response
  to the following warning from Sasha

  https://lore.kernel.org/stable/f1153021-846b-4fb1-8c4d-9fa813f982d3@arm.com/

Anshuman Khandual (7):
  arm64/sysreg: Update register fields for ID_AA64MMFR0_EL1
  arm64/sysreg: Add register fields for HDFGRTR2_EL2
  arm64/sysreg: Add register fields for HDFGWTR2_EL2
  arm64/sysreg: Add register fields for HFGITR2_EL2
  arm64/sysreg: Add register fields for HFGRTR2_EL2
  arm64/sysreg: Add register fields for HFGWTR2_EL2
  arm64/boot: Enable EL2 requirements for FEAT_PMUv3p9

 Documentation/arch/arm64/booting.rst |  22 ++++++
 arch/arm64/include/asm/el2_setup.h   |  25 +++++++
 arch/arm64/tools/sysreg              | 103 +++++++++++++++++++++++++++
 3 files changed, 150 insertions(+)

-- 
2.30.2

[PATCH V2 6.14.y 1/7] arm64/sysreg: Update register fields for ID_AA64MMFR0_EL1

[Anshuman Khandual]

This updates ID_AA64MMFR0_EL1 register fields as per the definitions based
on DDI0601 2024-12.

Cc: Will Deacon <will@kernel.org>
Cc: Mark Brown <broonie@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Link: https://lore.kernel.org/r/20250203050828.1049370-2-anshuman.khandual@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
(cherry picked from commit cc15f548cc77574bcd68425ae01a796659bd3705)
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
---
 arch/arm64/tools/sysreg | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/tools/sysreg b/arch/arm64/tools/sysreg
index 762ee084b37c..13479c5a9b1b 100644
--- a/arch/arm64/tools/sysreg
+++ b/arch/arm64/tools/sysreg
@@ -1664,6 +1664,7 @@ EndEnum
 UnsignedEnum	59:56	FGT
 	0b0000	NI
 	0b0001	IMP
+	0b0010	FGT2
 EndEnum
 Res0	55:48
 UnsignedEnum	47:44	EXS
@@ -1725,6 +1726,7 @@ Enum	3:0	PARANGE
 	0b0100	44
 	0b0101	48
 	0b0110	52
+	0b0111	56
 EndEnum
 EndSysreg
 
-- 
2.30.2

[PATCH V2 6.14.y 2/7] arm64/sysreg: Add register fields for HDFGRTR2_EL2

[Anshuman Khandual]

This adds register fields for HDFGRTR2_EL2 as per the definitions based
on DDI0601 2024-12.

Cc: Will Deacon <will@kernel.org>
Cc: Mark Brown <broonie@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Link: https://lore.kernel.org/r/20250203050828.1049370-3-anshuman.khandual@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
(cherry picked from commit 44844551670cff70a8aa5c1cde27ad1e0367e009)
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
---
 arch/arm64/tools/sysreg | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/arch/arm64/tools/sysreg b/arch/arm64/tools/sysreg
index 13479c5a9b1b..736c72d772de 100644
--- a/arch/arm64/tools/sysreg
+++ b/arch/arm64/tools/sysreg
@@ -2643,6 +2643,35 @@ Field	0	E0HTRE
 EndSysreg
 
 
+Sysreg HDFGRTR2_EL2	3	4	3	1	0
+Res0	63:25
+Field	24	nPMBMAR_EL1
+Field	23	nMDSTEPOP_EL1
+Field	22	nTRBMPAM_EL1
+Res0	21
+Field	20	nTRCITECR_EL1
+Field	19	nPMSDSFR_EL1
+Field	18	nSPMDEVAFF_EL1
+Field	17	nSPMID
+Field	16	nSPMSCR_EL1
+Field	15	nSPMACCESSR_EL1
+Field	14	nSPMCR_EL0
+Field	13	nSPMOVS
+Field	12	nSPMINTEN
+Field	11	nSPMCNTEN
+Field	10	nSPMSELR_EL0
+Field	9	nSPMEVTYPERn_EL0
+Field	8	nSPMEVCNTRn_EL0
+Field	7	nPMSSCR_EL1
+Field	6	nPMSSDATA
+Field	5	nMDSELR_EL1
+Field	4	nPMUACR_EL1
+Field	3	nPMICFILTR_EL0
+Field	2	nPMICNTR_EL0
+Field	1	nPMIAR_EL1
+Field	0	nPMECR_EL1
+EndSysreg
+
 Sysreg HDFGRTR_EL2	3	4	3	1	4
 Field	63	PMBIDR_EL1
 Field	62	nPMSNEVFR_EL1
-- 
2.30.2

[PATCH V2 6.14.y 3/7] arm64/sysreg: Add register fields for HDFGWTR2_EL2

[Anshuman Khandual]

This adds register fields for HDFGWTR2_EL2 as per the definitions based
on DDI0601 2024-12.

Cc: Will Deacon <will@kernel.org>
Cc: Mark Brown <broonie@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Link: https://lore.kernel.org/r/20250203050828.1049370-4-anshuman.khandual@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
(cherry picked from commit 2f1f62a1257b9d5eb98a8e161ea7d11f1678f7ad)
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
---
 arch/arm64/tools/sysreg | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/arch/arm64/tools/sysreg b/arch/arm64/tools/sysreg
index 736c72d772de..f1c366866c93 100644
--- a/arch/arm64/tools/sysreg
+++ b/arch/arm64/tools/sysreg
@@ -2672,6 +2672,34 @@ Field	1	nPMIAR_EL1
 Field	0	nPMECR_EL1
 EndSysreg
 
+Sysreg HDFGWTR2_EL2	3	4	3	1	1
+Res0	63:25
+Field	24	nPMBMAR_EL1
+Field	23	nMDSTEPOP_EL1
+Field	22	nTRBMPAM_EL1
+Field	21	nPMZR_EL0
+Field	20	nTRCITECR_EL1
+Field	19	nPMSDSFR_EL1
+Res0	18:17
+Field	16	nSPMSCR_EL1
+Field	15	nSPMACCESSR_EL1
+Field	14	nSPMCR_EL0
+Field	13	nSPMOVS
+Field	12	nSPMINTEN
+Field	11	nSPMCNTEN
+Field	10	nSPMSELR_EL0
+Field	9	nSPMEVTYPERn_EL0
+Field	8	nSPMEVCNTRn_EL0
+Field	7	nPMSSCR_EL1
+Res0	6
+Field	5	nMDSELR_EL1
+Field	4	nPMUACR_EL1
+Field	3	nPMICFILTR_EL0
+Field	2	nPMICNTR_EL0
+Field	1	nPMIAR_EL1
+Field	0	nPMECR_EL1
+EndSysreg
+
 Sysreg HDFGRTR_EL2	3	4	3	1	4
 Field	63	PMBIDR_EL1
 Field	62	nPMSNEVFR_EL1
-- 
2.30.2

[PATCH V2 6.14.y 4/7] arm64/sysreg: Add register fields for HFGITR2_EL2

[Anshuman Khandual]

This adds register fields for HFGITR2_EL2 as per the definitions based
on DDI0601 2024-12.

Cc: Will Deacon <will@kernel.org>
Cc: Mark Brown <broonie@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Link: https://lore.kernel.org/r/20250203050828.1049370-5-anshuman.khandual@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
(cherry picked from commit 9401476f17747586a8bfb29abfdf5ade7a8bceef)
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
---
 arch/arm64/tools/sysreg | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/arm64/tools/sysreg b/arch/arm64/tools/sysreg
index f1c366866c93..0008ff35a655 100644
--- a/arch/arm64/tools/sysreg
+++ b/arch/arm64/tools/sysreg
@@ -2872,6 +2872,12 @@ Field	1	AMEVCNTR00_EL0
 Field	0	AMCNTEN0
 EndSysreg
 
+Sysreg	HFGITR2_EL2	3	4	3	1	7
+Res0	63:2
+Field	1	nDCCIVAPS
+Field	0	TSBCSYNC
+EndSysreg
+
 Sysreg	ZCR_EL2	3	4	1	2	0
 Fields	ZCR_ELx
 EndSysreg
-- 
2.30.2

[PATCH V2 6.14.y 5/7] arm64/sysreg: Add register fields for HFGRTR2_EL2

[Anshuman Khandual]

This adds register fields for HFGRTR2_EL2 as per the definitions based
on DDI0601 2024-12.

Cc: Will Deacon <will@kernel.org>
Cc: Mark Brown <broonie@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Link: https://lore.kernel.org/r/20250203050828.1049370-6-anshuman.khandual@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
(cherry picked from commit 59236089ad5243377b6905d78e39ba4183dc35f5)
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
---
 arch/arm64/tools/sysreg | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/arch/arm64/tools/sysreg b/arch/arm64/tools/sysreg
index 0008ff35a655..cae085317b8c 100644
--- a/arch/arm64/tools/sysreg
+++ b/arch/arm64/tools/sysreg
@@ -2700,6 +2700,25 @@ Field	1	nPMIAR_EL1
 Field	0	nPMECR_EL1
 EndSysreg
 
+Sysreg	HFGRTR2_EL2	3	4	3	1	2
+Res0	63:15
+Field	14	nACTLRALIAS_EL1
+Field	13	nACTLRMASK_EL1
+Field	12	nTCR2ALIAS_EL1
+Field	11	nTCRALIAS_EL1
+Field	10	nSCTLRALIAS2_EL1
+Field	9	nSCTLRALIAS_EL1
+Field	8	nCPACRALIAS_EL1
+Field	7	nTCR2MASK_EL1
+Field	6	nTCRMASK_EL1
+Field	5	nSCTLR2MASK_EL1
+Field	4	nSCTLRMASK_EL1
+Field	3	nCPACRMASK_EL1
+Field	2	nRCWSMASK_EL1
+Field	1	nERXGSR_EL1
+Field	0	nPFAR_EL1
+EndSysreg
+
 Sysreg HDFGRTR_EL2	3	4	3	1	4
 Field	63	PMBIDR_EL1
 Field	62	nPMSNEVFR_EL1
-- 
2.30.2

[PATCH V2 6.14.y 6/7] arm64/sysreg: Add register fields for HFGWTR2_EL2

[Anshuman Khandual]

This adds register fields for HFGWTR2_EL2 as per the definitions based
on DDI0601 2024-12.

Cc: Will Deacon <will@kernel.org>
Cc: Mark Brown <broonie@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Link: https://lore.kernel.org/r/20250203050828.1049370-7-anshuman.khandual@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
(cherry picked from commit ea37be0773f04420515b8db49e50abedbaa97e23)
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
---
 arch/arm64/tools/sysreg | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/arch/arm64/tools/sysreg b/arch/arm64/tools/sysreg
index cae085317b8c..891fe033e1b6 100644
--- a/arch/arm64/tools/sysreg
+++ b/arch/arm64/tools/sysreg
@@ -2719,6 +2719,25 @@ Field	1	nERXGSR_EL1
 Field	0	nPFAR_EL1
 EndSysreg
 
+Sysreg	HFGWTR2_EL2	3	4	3	1	3
+Res0	63:15
+Field	14	nACTLRALIAS_EL1
+Field	13	nACTLRMASK_EL1
+Field	12	nTCR2ALIAS_EL1
+Field	11	nTCRALIAS_EL1
+Field	10	nSCTLRALIAS2_EL1
+Field	9	nSCTLRALIAS_EL1
+Field	8	nCPACRALIAS_EL1
+Field	7	nTCR2MASK_EL1
+Field	6	nTCRMASK_EL1
+Field	5	nSCTLR2MASK_EL1
+Field	4	nSCTLRMASK_EL1
+Field	3	nCPACRMASK_EL1
+Field	2	nRCWSMASK_EL1
+Res0	1
+Field	0	nPFAR_EL1
+EndSysreg
+
 Sysreg HDFGRTR_EL2	3	4	3	1	4
 Field	63	PMBIDR_EL1
 Field	62	nPMSNEVFR_EL1
-- 
2.30.2

[PATCH V2 6.14.y 7/7] arm64/boot: Enable EL2 requirements for FEAT_PMUv3p9

[Anshuman Khandual]

FEAT_PMUv3p9 registers such as PMICNTR_EL0, PMICFILTR_EL0, and PMUACR_EL1
access from EL1 requires appropriate EL2 fine grained trap configuration
via FEAT_FGT2 based trap control registers HDFGRTR2_EL2 and HDFGWTR2_EL2.
Otherwise such register accesses will result in traps into EL2.

Add a new helper __init_el2_fgt2() which initializes FEAT_FGT2 based fine
grained trap control registers HDFGRTR2_EL2 and HDFGWTR2_EL2 (setting the
bits nPMICNTR_EL0, nPMICFILTR_EL0 and nPMUACR_EL1) to enable access into
PMICNTR_EL0, PMICFILTR_EL0, and PMUACR_EL1 registers.

Also update booting.rst with SCR_EL3.FGTEn2 requirement for all FEAT_FGT2
based registers to be accessible in EL2.

Cc: Will Deacon <will@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Rob Herring <robh@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Oliver Upton <oliver.upton@linux.dev>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-doc@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: kvmarm@lists.linux.dev
Fixes: 0bbff9ed8165 ("perf/arm_pmuv3: Add PMUv3.9 per counter EL0 access control")
Fixes: d8226d8cfbaf ("perf: arm_pmuv3: Add support for Armv9.4 PMU instruction counter")
Tested-by: Rob Herring (Arm) <robh@kernel.org>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Link: https://lore.kernel.org/r/20250227035119.2025171-1-anshuman.khandual@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
(cherry picked from commit 858c7bfcb35e1100b58bb63c9f562d86e09418d9)
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
---
 Documentation/arch/arm64/booting.rst | 22 ++++++++++++++++++++++
 arch/arm64/include/asm/el2_setup.h   | 25 +++++++++++++++++++++++++
 2 files changed, 47 insertions(+)

diff --git a/Documentation/arch/arm64/booting.rst b/Documentation/arch/arm64/booting.rst
index cad6fdc96b98..dee7b6de864f 100644
--- a/Documentation/arch/arm64/booting.rst
+++ b/Documentation/arch/arm64/booting.rst
@@ -288,6 +288,12 @@ Before jumping into the kernel, the following conditions must be met:
 
     - SCR_EL3.FGTEn (bit 27) must be initialised to 0b1.
 
+  For CPUs with the Fine Grained Traps 2 (FEAT_FGT2) extension present:
+
+  - If EL3 is present and the kernel is entered at EL2:
+
+    - SCR_EL3.FGTEn2 (bit 59) must be initialised to 0b1.
+
   For CPUs with support for HCRX_EL2 (FEAT_HCX) present:
 
   - If EL3 is present and the kernel is entered at EL2:
@@ -382,6 +388,22 @@ Before jumping into the kernel, the following conditions must be met:
 
     - SMCR_EL2.EZT0 (bit 30) must be initialised to 0b1.
 
+  For CPUs with the Performance Monitors Extension (FEAT_PMUv3p9):
+
+ - If EL3 is present:
+
+    - MDCR_EL3.EnPM2 (bit 7) must be initialised to 0b1.
+
+ - If the kernel is entered at EL1 and EL2 is present:
+
+    - HDFGRTR2_EL2.nPMICNTR_EL0 (bit 2) must be initialised to 0b1.
+    - HDFGRTR2_EL2.nPMICFILTR_EL0 (bit 3) must be initialised to 0b1.
+    - HDFGRTR2_EL2.nPMUACR_EL1 (bit 4) must be initialised to 0b1.
+
+    - HDFGWTR2_EL2.nPMICNTR_EL0 (bit 2) must be initialised to 0b1.
+    - HDFGWTR2_EL2.nPMICFILTR_EL0 (bit 3) must be initialised to 0b1.
+    - HDFGWTR2_EL2.nPMUACR_EL1 (bit 4) must be initialised to 0b1.
+
   For CPUs with Memory Copy and Memory Set instructions (FEAT_MOPS):
 
   - If the kernel is entered at EL1 and EL2 is present:
diff --git a/arch/arm64/include/asm/el2_setup.h b/arch/arm64/include/asm/el2_setup.h
index 555c613fd232..ebceaae3c749 100644
--- a/arch/arm64/include/asm/el2_setup.h
+++ b/arch/arm64/include/asm/el2_setup.h
@@ -259,6 +259,30 @@
 .Lskip_fgt_\@:
 .endm
 
+.macro __init_el2_fgt2
+	mrs	x1, id_aa64mmfr0_el1
+	ubfx	x1, x1, #ID_AA64MMFR0_EL1_FGT_SHIFT, #4
+	cmp	x1, #ID_AA64MMFR0_EL1_FGT_FGT2
+	b.lt	.Lskip_fgt2_\@
+
+	mov	x0, xzr
+	mrs	x1, id_aa64dfr0_el1
+	ubfx	x1, x1, #ID_AA64DFR0_EL1_PMUVer_SHIFT, #4
+	cmp	x1, #ID_AA64DFR0_EL1_PMUVer_V3P9
+	b.lt	.Lskip_pmuv3p9_\@
+
+	orr	x0, x0, #HDFGRTR2_EL2_nPMICNTR_EL0
+	orr	x0, x0, #HDFGRTR2_EL2_nPMICFILTR_EL0
+	orr	x0, x0, #HDFGRTR2_EL2_nPMUACR_EL1
+.Lskip_pmuv3p9_\@:
+	msr_s   SYS_HDFGRTR2_EL2, x0
+	msr_s   SYS_HDFGWTR2_EL2, x0
+	msr_s   SYS_HFGRTR2_EL2, xzr
+	msr_s   SYS_HFGWTR2_EL2, xzr
+	msr_s   SYS_HFGITR2_EL2, xzr
+.Lskip_fgt2_\@:
+.endm
+
 .macro __init_el2_gcs
 	mrs_s	x1, SYS_ID_AA64PFR1_EL1
 	ubfx	x1, x1, #ID_AA64PFR1_EL1_GCS_SHIFT, #4
@@ -304,6 +328,7 @@
 	__init_el2_nvhe_idregs
 	__init_el2_cptr
 	__init_el2_fgt
+	__init_el2_fgt2
         __init_el2_gcs
 .endm
 
-- 
2.30.2

Re: [PATCH V2 6.14.y 3/7] arm64/sysreg: Add register fields for HDFGWTR2_EL2

[Sasha Levin]

[ Sasha's backport helper bot ]

Hi,

Summary of potential issues:
ℹ️ This is part 3/7 of a series
⚠️ Found matching upstream commit but patch is missing proper reference to it

Found matching upstream commit: 2f1f62a1257b9d5eb98a8e161ea7d11f1678f7ad

Note: The patch differs from the upstream commit:
---
1:  2f1f62a1257b9 ! 1:  3fadc0fbf42ee arm64/sysreg: Add register fields for HDFGWTR2_EL2
    @@ Commit message
         Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
         Link: https://lore.kernel.org/r/20250203050828.1049370-4-anshuman.khandual@arm.com
         Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
    +    (cherry picked from commit 2f1f62a1257b9d5eb98a8e161ea7d11f1678f7ad)
    +    Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
     
      ## arch/arm64/tools/sysreg ##
     @@ arch/arm64/tools/sysreg: Field	1	nPMIAR_EL1
---

NOTE: These results are for this patch alone. Full series testing will be
performed when all parts are received.

Results of testing on various branches:

| Branch                    | Patch Apply | Build Test |
|---------------------------|-------------|------------|
| stable/linux-5.4.y        |  Success    |  Success   |

Re: [PATCH V2 6.14.y 1/7] arm64/sysreg: Update register fields for ID_AA64MMFR0_EL1

[Sasha Levin]

[ Sasha's backport helper bot ]

Hi,

Summary of potential issues:
⚠️ Found matching upstream commit but patch is missing proper reference to it

Found matching upstream commit: cc15f548cc77574bcd68425ae01a796659bd3705

Note: The patch differs from the upstream commit:
---
1:  cc15f548cc775 ! 1:  9582b0017ce89 arm64/sysreg: Update register fields for ID_AA64MMFR0_EL1
    @@ Commit message
         Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
         Link: https://lore.kernel.org/r/20250203050828.1049370-2-anshuman.khandual@arm.com
         Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
    +    (cherry picked from commit cc15f548cc77574bcd68425ae01a796659bd3705)
    +    Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
     
      ## arch/arm64/tools/sysreg ##
     @@ arch/arm64/tools/sysreg: EndEnum
---

Results of testing on various branches:

| Branch                    | Patch Apply | Build Test |
|---------------------------|-------------|------------|
| stable/linux-6.14.y       |  Success    |  Success   |

Re: [PATCH V2 6.14.y 4/7] arm64/sysreg: Add register fields for HFGITR2_EL2

[Sasha Levin]

[ Sasha's backport helper bot ]

Hi,

Summary of potential issues:
ℹ️ This is part 4/7 of a series
⚠️ Found matching upstream commit but patch is missing proper reference to it

Found matching upstream commit: 9401476f17747586a8bfb29abfdf5ade7a8bceef

Note: The patch differs from the upstream commit:
---
1:  9401476f17747 ! 1:  c12f9691c2424 arm64/sysreg: Add register fields for HFGITR2_EL2
    @@ Commit message
         Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
         Link: https://lore.kernel.org/r/20250203050828.1049370-5-anshuman.khandual@arm.com
         Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
    +    (cherry picked from commit 9401476f17747586a8bfb29abfdf5ade7a8bceef)
    +    Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
     
      ## arch/arm64/tools/sysreg ##
     @@ arch/arm64/tools/sysreg: Field	1	AMEVCNTR00_EL0
---

NOTE: These results are for this patch alone. Full series testing will be
performed when all parts are received.

Results of testing on various branches:

| Branch                    | Patch Apply | Build Test |
|---------------------------|-------------|------------|
| stable/linux-5.4.y        |  Success    |  Success   |

Re: [PATCH V2 6.14.y 6/7] arm64/sysreg: Add register fields for HFGWTR2_EL2

[Sasha Levin]

[ Sasha's backport helper bot ]

Hi,

Summary of potential issues:
ℹ️ This is part 6/7 of a series
⚠️ Found matching upstream commit but patch is missing proper reference to it

Found matching upstream commit: ea37be0773f04420515b8db49e50abedbaa97e23

Note: The patch differs from the upstream commit:
---
1:  ea37be0773f04 ! 1:  a4f04ab50798f arm64/sysreg: Add register fields for HFGWTR2_EL2
    @@ Commit message
         Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
         Link: https://lore.kernel.org/r/20250203050828.1049370-7-anshuman.khandual@arm.com
         Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
    +    (cherry picked from commit ea37be0773f04420515b8db49e50abedbaa97e23)
    +    Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
     
      ## arch/arm64/tools/sysreg ##
     @@ arch/arm64/tools/sysreg: Field	1	nERXGSR_EL1
---

NOTE: These results are for this patch alone. Full series testing will be
performed when all parts are received.

Results of testing on various branches:

| Branch                    | Patch Apply | Build Test |
|---------------------------|-------------|------------|
| stable/linux-5.4.y        |  Success    |  Success   |

Re: [PATCH V2 6.14.y 7/7] arm64/boot: Enable EL2 requirements for FEAT_PMUv3p9

[Sasha Levin]

[ Sasha's backport helper bot ]

Hi,

Summary of potential issues:
ℹ️ This is part 7/7 of a series
⚠️ Found matching upstream commit but patch is missing proper reference to it

Found matching upstream commit: 858c7bfcb35e1100b58bb63c9f562d86e09418d9

Note: The patch differs from the upstream commit:
---
1:  858c7bfcb35e1 ! 1:  b879a2d018d84 arm64/boot: Enable EL2 requirements for FEAT_PMUv3p9
    @@ Commit message
         Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
         Link: https://lore.kernel.org/r/20250227035119.2025171-1-anshuman.khandual@arm.com
         Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
    +    (cherry picked from commit 858c7bfcb35e1100b58bb63c9f562d86e09418d9)
    +    Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
     
      ## Documentation/arch/arm64/booting.rst ##
     @@ Documentation/arch/arm64/booting.rst: Before jumping into the kernel, the following conditions must be met:
---

NOTE: These results are for this patch alone. Full series testing will be
performed when all parts are received.

Results of testing on various branches:

| Branch                    | Patch Apply | Build Test |
|---------------------------|-------------|------------|
| stable/linux-5.4.y        |  Success    |  Success   |

Re: [PATCH V2 6.14.y 5/7] arm64/sysreg: Add register fields for HFGRTR2_EL2

[Sasha Levin]

[ Sasha's backport helper bot ]

Hi,

Summary of potential issues:
ℹ️ This is part 5/7 of a series
⚠️ Found matching upstream commit but patch is missing proper reference to it

Found matching upstream commit: 59236089ad5243377b6905d78e39ba4183dc35f5

Note: The patch differs from the upstream commit:
---
1:  59236089ad524 ! 1:  2316dae089c5b arm64/sysreg: Add register fields for HFGRTR2_EL2
    @@ Commit message
         Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
         Link: https://lore.kernel.org/r/20250203050828.1049370-6-anshuman.khandual@arm.com
         Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
    +    (cherry picked from commit 59236089ad5243377b6905d78e39ba4183dc35f5)
    +    Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
     
      ## arch/arm64/tools/sysreg ##
     @@ arch/arm64/tools/sysreg: Field	1	nPMIAR_EL1
---

NOTE: These results are for this patch alone. Full series testing will be
performed when all parts are received.

Results of testing on various branches:

| Branch                    | Patch Apply | Build Test |
|---------------------------|-------------|------------|
| stable/linux-5.4.y        |  Success    |  Success   |

Re: [PATCH V2 6.14.y 2/7] arm64/sysreg: Add register fields for HDFGRTR2_EL2

[Sasha Levin]

[ Sasha's backport helper bot ]

Hi,

Summary of potential issues:
ℹ️ This is part 2/7 of a series
⚠️ Found matching upstream commit but patch is missing proper reference to it

Found matching upstream commit: 44844551670cff70a8aa5c1cde27ad1e0367e009

Note: The patch differs from the upstream commit:
---
1:  44844551670cf ! 1:  461a657e32a15 arm64/sysreg: Add register fields for HDFGRTR2_EL2
    @@ Commit message
         Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
         Link: https://lore.kernel.org/r/20250203050828.1049370-3-anshuman.khandual@arm.com
         Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
    +    (cherry picked from commit 44844551670cff70a8aa5c1cde27ad1e0367e009)
    +    Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
     
      ## arch/arm64/tools/sysreg ##
     @@ arch/arm64/tools/sysreg: Field	0	E0HTRE
---

NOTE: These results are for this patch alone. Full series testing will be
performed when all parts are received.

Results of testing on various branches:

| Branch                    | Patch Apply | Build Test |
|---------------------------|-------------|------------|
| stable/linux-5.4.y        |  Success    |  Success   |