NVIDIA · fyu1 · May 21, 2026 · May 21, 2026 · May 21, 2026 · May 21, 2026
diff --git a/debian.nvidia-6.17/changelog b/debian.nvidia-6.17/changelog
@@ -1,3 +1,314 @@
+linux-nvidia-6.17 (6.17.0-1019.19) noble; urgency=medium
+
+  * noble/linux-nvidia-6.17: 6.17.0-1019.19 -proposed tracker (LP: #2153495)
+
+  * Packaging resync (LP: #1786013)
+    - [Packaging] update variants
+    - [Packaging] debian.nvidia-6.17/dkms-versions -- update from kernel-
+      versions (main/d2026.05.20)
+
+  * CXL VFIO: Add CXL Type-2 device passthrough support (LP: #2152222)
+    - crypto: hisilicon - qm updates BAR configuration
+    - hisi_acc_vfio_pci: adapt to new migration configuration
+    - vfio/nvgrace-gpu: fix grammatical error
+    - vfio: Provide a get_region_info op
+    - vfio/hisi: Convert to the get_region_info op
+    - vfio/virtio: Convert to the get_region_info op
+    - vfio/nvgrace: Convert to the get_region_info op
+    - vfio/pci: Fill in the missing get_region_info ops
+    - vfio/mtty: Provide a get_region_info op
+    - vfio/mdpy: Provide a get_region_info op
+    - vfio/mbochs: Provide a get_region_info op
+    - vfio/platform: Provide a get_region_info op
+    - vfio/fsl: Provide a get_region_info op
+    - vfio/cdx: Provide a get_region_info op
+    - vfio/ccw: Provide a get_region_info op
+    - vfio/gvt: Provide a get_region_info op
+    - vfio: Require drivers to implement get_region_info
+    - vfio: Add get_region_info_caps op
+    - vfio/mbochs: Convert mbochs to use vfio_info_add_capability()
+    - vfio/gvt: Convert to get_region_info_caps
+    - vfio/ccw: Convert to get_region_info_caps
+    - vfio/pci: Convert all PCI drivers to get_region_info_caps
+    - vfio/platform: Convert to get_region_info_caps
+    - vfio: Move the remaining drivers to get_region_info_caps
+    - vfio: Remove the get_region_info op
+    - NVIDIA: VR: SAUCE: cxl: Add cxl_get_hdm_info() for HDM decoder metadata
+    - NVIDIA: VR: SAUCE: cxl: Declare cxl_find_regblock and
+      cxl_probe_component_regs in public header
+    - NVIDIA: VR: SAUCE: cxl: Move component/HDM register defines to
+      uapi/cxl/cxl_regs.h
+    - NVIDIA: VR: SAUCE: cxl: Split cxl_await_range_active() from media-ready
+      wait
+    - NVIDIA: VR: SAUCE: cxl: Record BIR and BAR offset in cxl_register_map
+    - NVIDIA: VR: SAUCE: vfio: UAPI for CXL-capable PCI device assignment
+    - NVIDIA: VR: SAUCE: vfio/pci: Add CXL state to vfio_pci_core_device
+    - NVIDIA: VR: SAUCE: vfio/pci: Add CONFIG_VFIO_CXL_CORE and stub CXL hooks
+    - NVIDIA: VR: SAUCE: vfio/cxl: Detect CXL DVSEC and probe HDM block
+    - NVIDIA: VR: SAUCE: vfio/pci: Export config access helpers
+    - NVIDIA: VR: SAUCE: vfio/cxl: Introduce HDM decoder register emulation
+      framework
+    - NVIDIA: VR: SAUCE: vfio/cxl: Wait for HDM ranges and create memdev
+    - NVIDIA: VR: SAUCE: vfio/cxl: CXL region management support
+    - NVIDIA: VR: SAUCE: vfio/cxl: DPA VFIO region with demand fault mmap and
+      reset zap
+    - NVIDIA: VR: SAUCE: vfio/cxl: Virtualize CXL DVSEC config writes
+    - NVIDIA: VR: SAUCE: vfio/cxl: Register regions with VFIO layer
+    - NVIDIA: VR: SAUCE: vfio/pci: Advertise CXL cap and sparse component BAR
+      to userspace
+    - NVIDIA: VR: SAUCE: vfio/cxl: Provide opt-out for CXL feature
+    - NVIDIA: VR: SAUCE: docs: vfio-pci: Document CXL Type-2 device
+      passthrough
+    - NVIDIA: VR: SAUCE: cxl: Export the CXL reset helpers for VFIO users
+    - NVIDIA: VR: SAUCE: vfio/pci: Wire CXL DPA reset handling
+    - NVIDIA: VR: SAUCE: vfio/cxl: Ensure PCI Memory Space is enabled before
+      post-reset BAR access
+    - NVIDIA: VR: SAUCE: vfio/cxl: preserve HDM decoder base addresses across
+      reset
+    - NVIDIA: VR: SAUCE: vfio/cxl: virtualize DVSEC STATUS2 register in
+      vconfig shadow
+    - NVIDIA: VR: SAUCE: vfio/cxl: Implement vfio_cxl_reset()
+    - NVIDIA: VR: SAUCE: config: Enable CONFIG_VFIO_CXL_CORE for CXL Type-2
+      passthrough
+
+  * Refresh series: Allow ATS to be always on for certain ATS-capable devices
+    (LP: #2150727)
+    - Revert "NVIDIA: VR: SAUCE: iommu/arm-smmu-v3: Allow ATS to be always on"
+    - Revert "NVIDIA: VR: SAUCE: PCI: Allow ATS to be always on for non-CXL
+      NVIDIA GPUs"
+    - Revert "NVIDIA: VR: SAUCE: PCI: Allow ATS to be always on for CXL.cache
+      capable devices"
+    - NVIDIA: VR: SAUCE: PCI: Allow ATS to be always on for CXL.cache capable
+      devices
+    - NVIDIA: VR: SAUCE: PCI: Allow ATS to be always on for pre-CXL devices
+    - NVIDIA: VR: SAUCE: iommu/arm-smmu-v3: Allow ATS to be always on
+
+  * Backport lan743x driver patches (LP: #2152064)
+    - net: microchip: lan743x: add ethtool nway_reset support
+    - net: lan743x: fix SGMII detection on PCI1xxxx B0+ during warm reset
+    - net: lan743x: fix duplex configuration in mac_link_up
+    - net: lan743x: rename chip_rev to fpga_rev
+
+  [ Ubuntu: 6.17.0-29.29 ]
+
+  * questing/linux: 6.17.0-29.29 -proposed tracker (LP: #2151099)
+  * CVE-2026-31419
+    - net: bonding: fix use-after-free in bond_xmit_broadcast()
+  * CVE-2026-31431
+    - crypto: algif_aead - Revert to operating out-of-place
+    - crypto: algif_aead - snapshot IV for async AEAD requests
+    - crypto: authencesn - Do not place hiseq at end of dst for out-of-place
+      decryption
+    - crypto: authencesn - Fix src offset when decrypting in-place
+    - crypto: af_alg - Fix page reassignment overflow in af_alg_pull_tsgl
+    - crypto: algif_aead - Fix minimum RX size check for decryption
+  * CVE-2026-31533
+    - net/tls: fix use-after-free in -EBUSY error path of tls_do_encryption
+  * CVE-2026-31504
+    - net: fix fanout UAF in packet_release() via NETDEV_UP race
+
+  [ Ubuntu: 6.17.0-28.28 ]
+
+  * questing/linux: 6.17.0-28.28 -proposed tracker (LP: #2150051)
+  * Linux kernel  6.17.0-22.22  breaks amdxdna (LP: #2149766)
+    - Revert "iommu: disable SVA when CONFIG_X86 is set"
+
+  [ Ubuntu: 6.17.0-24.24 ]
+
+  * questing/linux: 6.17.0-24.24 -proposed tracker (LP: #2148025)
+  * Remount ext4 to readonly with data=journal mode may dump call trace
+    (LP: #2147400)
+    - ext4: fix stale xarray tags after writeback
+  * System hangs during stress-ng stack test (LP: #2137755)
+    - mm, swap: fix swap cache index error when retrying reclaim
+  * BUG: kernel NULL pointer dereference when starting VM inside a container
+    (LP: #2147374)
+    - apparmor: fix NULL pointer dereference in __unix_needs_revalidation
+  * BUG: kernel NULL pointer dereference in amdgpu (LP: #2144577)
+    - drm/amdgpu: validate the flush_gpu_tlb_pasid()
+    - drm/amdgpu: Fix validating flush_gpu_tlb_pasid()
+  * Jellyfin Desktop Flatpak doesn't work with the current AppArmor profile
+    (LP: #2142956)
+    - SAUCE: apparmor5.0.0 [53/57]: apparmor: fix af_unix local addr mediation
+      binding
+  * Fine grained network mediation was broken if v8/v9 was used (LP: #2142860)
+    - SAUCE: apparmor5.0.0 [29/57]: apparmor: fix fine grained inet mediation
+      sock_file_perm
+  * Enable CirrusLogic audio solution CS42L45+CS35L63 on AMD and Intel PTL
+    (LP: #2143104)
+    - ASoC: amd: acp: Add ACP7.0 match entries for cs35l56 and cs42l43
+    - ASoC: amd: acp: soc-acpi: add is_device_rt712_vb() helper
+    - ASoC: amd: acp: Sort match table into most specific first
+    - ASoC: amd: acp: Rename Cirrus Logic component match entries to include
+      link and uid
+    - ASoC: amd: acp: Sort Cirrus Logic match entries
+    - ASoC: amd: acp: Add ACP7.0 match entries for Cirrus Logic parts
+    - ASoC: amd: acp: Fix Kconfig dependencies for
+      SND_SOC_ACPI_AMD_SDCA_QUIRKS
+    - [Config] Enable SND_SOC_ACPI_AMD_SDCA_QUIRKS
+    - soundwire: amd: add clock init control function
+    - soundwire: amd: refactor bandwidth calculation logic
+  * CVE-2026-23112
+    - nvmet-tcp: add bounds checks in nvmet_tcp_build_pdu_iovec
+  * Canonical Kmod 2025 key rotation (LP: #2147447)
+    - [Packaging] ubuntu-compatible-signing -- make Ubuntu-Compatible-Signing
+      extensible
+    - [Packaging] ubuntu-compatible-signing -- allow consumption of positive
+      certs
+    - [Packaging] ubuntu-compatible-signing -- report the livepatch:2025 key
+    - [Config] prepare for Canonical Kmod key rotation
+    - [Packaging] ubuntu-compatible-signing -- report the kmod:2025 key
+    - [Packaging] ensure our cert rollups are always fresh
+  * Questing update: upstream stable patchset 2026-03-24 (LP: #2146193)
+    - mptcp: fallback earlier on simult connection
+    - mm: consider non-anon swap cache folios in folio_expected_ref_count()
+    - mptcp: ensure context reset on disconnect()
+    - wifi: mac80211: Discard Beacon frames to non-broadcast address
+    - net: phy: mediatek: fix nvmem cell reference leak in
+      mt798x_phy_calibration
+    - drm/amdgpu: Forward VMID reservation errors
+    - sched/fair: Small cleanup to sched_balance_newidle()
+    - sched/fair: Small cleanup to update_newidle_cost()
+    - sched/fair: Proportional newidle balance
+    - Revert "iommu/amd: Skip enabling command/event buffers for kdump"
+    - sched/proxy: Yield the donor task
+    - drm: nova: depend on CONFIG_64BIT
+    - sched/core: Add comment explaining force-idle vruntime snapshots
+    - mm/huge_memory: merge uniform_split_supported() and
+      non_uniform_split_supported()
+    - drm/amdgpu: don't attach the tlb fence for SI
+    - sched_ext: fix uninitialized ret on alloc_percpu() failure
+    - idpf: fix LAN memory regions command on some NVMs
+    - Bluetooth: MGMT: report BIS capability flags in supported settings
+    - powerpc/tools: drop `-o pipefail` in gcc check scripts
+    - net: airoha: Move net_devs registration in a dedicated routine
+    - net: wangxun: move PHYLINK dependency
+    - platform/x86/intel/pmt: Fix kobject memory leak on init failure
+    - bng_en: update module description
+    - mcb: Add missing modpost build support
+    - net: mdio: rtl9300: use scoped for loops
+    - tools/sched_ext: fix scx_show_state.py for scx_root change
+    - platform/x86/intel/pmt/discovery: use valid device pointer in
+      dev_err_probe
+    - net: fib: restore ECMP balance from loopback
+    - RDMA/mana_ib: check cqe length for kernel CQs
+    - drm/gem-shmem: Fix the MODULE_LICENSE() string
+    - kunit: Enforce task execution in {soft,hard}irq contexts
+    - ublk: don't pass q_id to ublk_queue_cmd_buf_size()
+    - ublk: implement NUMA-aware memory allocation
+    - ublk: scan partition in async way
+    - drm/xe/guc: READ/WRITE_ONCE g2h_fence->done
+    - IB/rxe: Fix missing umem_odp->umem_mutex unlock on error path
+    - hisi_acc_vfio_pci: Add .match_token_uuid callback in
+      hisi_acc_vfio_pci_migrn_ops
+    - mm, swap: do not perform synchronous discard during allocation
+    - clk: qcom: mmcc-sdm660: Add missing MDSS reset
+    - clk: qcom: Fix SM_VIDEOCC_6350 dependencies
+    - [Config] set CONFIG_SM_GCC_6350, CONFIG_SM_VIDEOCC_6350 to '-'
+    - clk: qcom: Fix dependencies of QCS_{DISP,GPU,VIDEO}CC_615
+    - [Config] set CONFIG_QCS_{DISP,GPU,VIDEO}CC_615 to '-'
+    - arm64: dts: ti: k3-am62d2-evm: Fix regulator properties
+    - arm64: dts: ti: k3-am62d2-evm: Fix PMIC padconfig
+    - arm64: dts: st: Add memory-region-names property for stm32mp257f-ev1
+    - arm64: dts: qcom: sm6350: Fix wrong order of freq-table-hz for UFS
+    - NFSD: Make FILE_SYNC WRITEs comply with spec
+    - nvmet: pci-epf: move DMA initialization to EPC init callback
+    - PCI: dwc: Add support for ELBI resource mapping
+    - PCI: meson: Fix parsing the DBI register region
+    - power: supply: max77705: Fix potential IRQ chip conflict when probing
+      two devices
+    - media: iris: Refine internal buffer reconfiguration logic for resolution
+      change
+    - LoongArch: Fix arch_dup_task_struct() for CONFIG_RANDSTRUCT
+    - mm/damon/tests/core-kunit: fix memory leak in
+      damon_test_set_filters_default_reject()
+    - mm/damon/tests/core-kunit: handle alloc failures on
+      damon_test_set_filters_default_reject()
+    - mm/damon/tests/core-kunit: handle alloc failures on
+      damos_test_filter_out()
+    - af_unix: don't post cmsg for SO_INQ unless explicitly asked for
+    - kernel/kexec: change the prototype of kimage_map_segment()
+    - selftests/mm: fix thread state check in uffd-unit-tests
+    - LoongArch: BPF: Save return address register ra to t0 before trampoline
+    - LoongArch: BPF: Enable trampoline-based tracing for module functions
+    - LoongArch: BPF: Adjust the jump offset of tail calls
+    - platform/x86: samsung-galaxybook: Fix problematic pointer cast
+    - platform/x86: alienware-wmi-wmax: Add support for new Area-51 laptops
+    - platform/x86: alienware-wmi-wmax: Add AWCC support for Alienware x16
+    - platform/x86: alienware-wmi-wmax: Add support for Alienware 16X Aurora
+    - drm/amdgpu/sdma6: Update SDMA 6.0.3 FW version to include UMQ protected-
+      fence fix
+    - drm/rockchip: Set VOP for the DRM DMA device
+    - drm/mediatek: mtk_hdmi: Fix probe device leaks
+    - drm/mediatek: ovl_adaptor: Fix probe device leaks
+    - drm/amd: Fix unbind/rebind for VCN 4.0.5
+    - drm/rockchip: vop2: Use OVL_LAYER_SEL configuration instead of use
+      win_mask calculate used layers
+    - drm/bridge: ti-sn65dsi83: ignore PLL_UNLOCK errors
+    - drm/nouveau/gsp: Allocate fwsec-sb at boot
+    - drm/xe/eustall: Disallow 0 EU stall property values
+    - drm/xe/svm: Fix a debug printout
+    - powercap: intel_rapl: Add support for Wildcat Lake platform
+    - powercap: intel_rapl: Add support for Nova Lake processors
+    - LoongArch: BPF: Enhance the bpf_arch_text_poke() function
+    - SAUCE: remove git merge section marker
+    - Upstream stable to v6.12.65, v6.18.4
+  * Questing update: upstream stable patchset 2026-03-24 (LP: #2146193) //
+    CVE-2025-71141
+    - drm/tilcdc: Fix removal actions in case of failed probe
+  * Questing update: upstream stable patchset 2026-03-24 (LP: #2146193) //
+    CVE-2025-71090
+    - nfsd: fix nfsd_file reference leak in nfsd4_add_rdaccess_to_wrdeleg()
+  * Questing update: upstream stable patchset 2026-03-24 (LP: #2146193) //
+    CVE-2025-71139
+    - kernel/kexec: fix IMA when allocation happens in CMA area
+  * Questing update: upstream stable patchset 2026-03-24 (LP: #2146193) //
+    CVE-2025-71152
+    - net: dsa: properly keep track of conduit reference
+  * Questing update: upstream stable patchset 2026-03-24 (LP: #2146193) //
+    CVE-2025-71142
+    - cpuset: fix warning when disabling remote partition
+  * Questing update: upstream stable patchset 2026-03-24 (LP: #2146193) //
+    CVE-2025-71155
+    - KVM: s390: Fix gmap_helper_zap_one_page() again
+  * Questing update: upstream stable patchset 2026-03-24 (LP: #2146193) //
+    CVE-2025-71134
+    - mm/page_alloc: change all pageblocks migrate type on coalescing
+  * CVE-2026-23394
+    - af_unix: Give up GC if MSG_PEEK intervened.
+  * [SRU] MIPI camera is not working after upgrading to 6.17-oem
+    (LP: #2145171)
+    - SAUCE: ACPI: respect items already in honor_dep before skipping
+  * ADATA SU680 causes repeated SATA resets and I/O errors on Ubuntu unless
+    link power management is forced to max_performance (LP: #2144060)
+    - ata: libata-core: disable LPM on ADATA SU680 SSD
+  * [SRU] Fix for i915 PSR issue on SDC panels on Intel PTL (LP: #2144637)
+    - drm/i915/psr: Panel Replay SU cap dpcd read return value
+    - drm/i915/psr: Add panel granularity information into intel_connector
+    - drm/i915/psr: Use SU granularity information available in
+      intel_connector
+    - drm/dp: Add definition for Panel Replay full-line granularity
+    - drm/i915/psr: Fix for Panel Replay X granularity DPCD register handling
+  * Got black screen after clicked logout button (LP: #2143100)
+    - drm/i915/alpm: ALPM disable fixes
+  * Dell Machines cannot boot into OS with 6.17.0-1012-oem (LP: #2144522)
+    - drm/amd: Disable MES LR compute W/A
+    - drm/amd: Set minimum version for set_hw_resource_1 on gfx11 to 0x52
+  * [SRU] Duplicated entries in /proc/<pid>/mountinfo (LP: #2143083)
+    - namespace: fix proc mount iteration
+  * CVE-2026-23274
+    - netfilter: xt_IDLETIMER: reject rev0 reuse of ALARM timer labels
+  * macvlan: observe an RCU grace period in macvlan_common_newlink() error
+    path (LP: #2144380) // CVE-2026-23209
+    - macvlan: observe an RCU grace period in macvlan_common_newlink() error
+      path
+  * CVE-2026-23351
+    - netfilter: nft_set_pipapo: split gc into unlink and reclaim phase
+  * CVE-2026-23231
+    - netfilter: nf_tables: fix use-after-free in nf_tables_addchain()
+
+ -- Jacob Martin <jacob.martin@canonical.com>  Thu, 21 May 2026 17:34:48 -0500
+
 linux-nvidia-6.17 (6.17.0-1018.18) noble; urgency=medium
 
   * noble/linux-nvidia-6.17: 6.17.0-1018.18 -proposed tracker (LP: #2150807)

diff --git a/debian.nvidia-6.17/config/annotations b/debian.nvidia-6.17/config/annotations
@@ -258,6 +258,7 @@ CONFIG_ULTRASOC_SMB                             note<'Required for Grace enablem
 CONFIG_VFIO_CXL_CORE                            policy<{'amd64': 'y', 'arm64': 'y'}>
 CONFIG_VFIO_CXL_CORE                            note<'Enable VFIO CXL core for CXL Type-2 device passthrough support'>
 
+
 # ---- Annotations without notes ----
 
 CONFIG_ACPI_MPAM                                policy<{'amd64': '-', 'arm64': 'y'}>

diff --git a/debian.nvidia-6.17/dkms-versions b/debian.nvidia-6.17/dkms-versions
@@ -1,4 +1,4 @@
 zfs-linux 2.3.4-1ubuntu2 modulename=zfs debpath=pool/universe/z/%package%/zfs-dkms_%version%_all.deb arch=amd64 arch=arm64 arch=ppc64el arch=s390x arch=riscv64 rprovides=spl-modules rprovides=spl-dkms rprovides=zfs-modules rprovides=zfs-dkms
 v4l2loopback 0.15.0-0ubuntu2.1 modulename=v4l2loopback debpath=pool/universe/v/%package%/v4l2loopback-dkms_%version%_all.deb arch=amd64 rprovides=v4l2loopback-modules rprovides=v4l2loopback-dkms
 mstflint 4.26.0-1 modulename=mstflint_access debpath=pool/universe/m/%package%/mstflint-dkms_%version%_all.deb         arch=amd64 arch=arm64              rprovides=mstflint-modules rprovides=mstflint-dkms
-nvidia-fs 2.28.2-1 modulename=nvidia-fs debpath=pool/universe/n/%package%/nvidia-fs-dkms_%version%_amd64.deb arch=amd64 arch=arm64 rprovides=nvidia-fs-modules rprovides=nvidia-fs-dkms type=standalone
+nvidia-fs 2.28.4-1 modulename=nvidia-fs debpath=pool/universe/n/%package%/nvidia-fs-dkms_%version%_amd64.deb arch=amd64 arch=arm64 rprovides=nvidia-fs-modules rprovides=nvidia-fs-dkms type=standalone
diff --git a/debian.nvidia-6.17/tracking-bug b/debian.nvidia-6.17/tracking-bug
@@ -1 +1 @@
-2150807 d2026.04.27-1
+2153495 d2026.05.20-1
diff --git a/drivers/resctrl/mpam_devices.c b/drivers/resctrl/mpam_devices.c
@@ -1400,6 +1400,7 @@ static void __ris_msmon_read(void *arg)
 {
 	bool nrdy = false;
 	bool config_mismatch;
+	bool overflow;
 	struct mon_read *m = arg;
 	u64 now, overflow_val = 0;
 	struct mon_cfg *ctx = m->ctx;
@@ -1431,13 +1432,20 @@ static void __ris_msmon_read(void *arg)
 	 * This saves waiting for 'nrdy' on subsequent reads.
 	 */
 	read_msmon_ctl_flt_vals(m, &cur_ctl, &cur_flt);
+	overflow = cur_ctl & MSMON_CFG_x_CTL_OFLOW_STATUS;
+
 	clean_msmon_ctl_val(&cur_ctl);
 	gen_msmon_ctl_flt_vals(m, &ctl_val, &flt_val);
 	config_mismatch = cur_flt != flt_val ||
 			  cur_ctl != (ctl_val | MSMON_CFG_x_CTL_EN);
 
-	if (config_mismatch || reset_on_next_read)
+	if (config_mismatch || reset_on_next_read) {
 		write_msmon_ctl_flt_vals(m, ctl_val, flt_val);
+		overflow = false;
+	} else if (overflow) {
+		mpam_write_monsel_reg(msc, CFG_MBWU_CTL,
+				      cur_ctl & ~MSMON_CFG_x_CTL_OFLOW_STATUS);
+	}
 
 	switch (m->type) {
 	case mpam_feat_msmon_csu:
@@ -1477,18 +1485,13 @@ static void __ris_msmon_read(void *arg)
 
 		mbwu_state = &ris->mbwu_state[ctx->mon];
 
-		/* Add any pre-overflow value to the mbwu_state->val */
-		if (mbwu_state->prev_val > now) {
-			overflow_val = mpam_msmon_overflow_val(m->type);
-			if (mpam_has_quirk(T241_MBW_COUNTER_SCALE_64, msc))
-				overflow_val *= 64;
-			overflow_val -= mbwu_state->prev_val;
-		}
-
-		mbwu_state->prev_val = now;
-		mbwu_state->correction += overflow_val;
+		if (overflow)
+			mbwu_state->correction += mpam_msmon_overflow_val(m->type);
 
-		/* Include bandwidth consumed before the last hardware reset */
+		/*
+		 * Include bandwidth consumed before the last hardware reset and
+		 * a counter size increment for each overflow.
+		 */
 		now += mbwu_state->correction;
 		break;
 	default:

diff --git a/drivers/resctrl/mpam_internal.h b/drivers/resctrl/mpam_internal.h
@@ -327,7 +327,7 @@ struct msmon_mbwu_state {
 
 	/*
 	 * The value to add to the new reading to account for power management,
-	 * and shifts to trigger the overflow interrupt.
+	 * and overflow.
 	 */
 	u64		correction;