[PATCH v2 00/12] arm_mpam: minor fixes at v7.2 · Ben Horgan <ben.horgan@arm.com> · 2026-09-17
[PATCH v2 01/12] arm_mpam: Move MPAMF_ECR write helpers to allow reuse · Ben Horgan <ben.horgan@arm.com> · 2026-09-17
Re: [PATCH v2 01/12] arm_mpam: Move MPAMF_ECR write helpers to allow reuse · Gavin Shan <hidden> · 2026-09-22
Re: [PATCH v2 01/12] arm_mpam: Move MPAMF_ECR write helpers to allow reuse · James Morse <james.morse@arm.com> · 2026-10-02
[PATCH v2 03/12] arm_mpam: Set mpam_feat_msmon_mbwu_31counter when there are bandwidth counters · Ben Horgan <ben.horgan@arm.com> · 2026-09-17
Re: [PATCH v2 03/12] arm_mpam: Set mpam_feat_msmon_mbwu_31counter when there are bandwidth counters · Gavin Shan <hidden> · 2026-09-22
Re: [PATCH v2 03/12] arm_mpam: Set mpam_feat_msmon_mbwu_31counter when there are bandwidth counters · James Morse <james.morse@arm.com> · 2026-10-02
[PATCH v2 05/12] arm_mpam: Ensure MBWU counters are reset on restore · Ben Horgan <ben.horgan@arm.com> · 2026-09-17
Re: [PATCH v2 05/12] arm_mpam: Ensure MBWU counters are reset on restore · Gavin Shan <hidden> · 2026-09-22
Re: [PATCH v2 05/12] arm_mpam: Ensure MBWU counters are reset on restore · James Morse <james.morse@arm.com> · 2026-10-02
Re: [PATCH v2 05/12] arm_mpam: Ensure MBWU counters are reset on restore · Ben Horgan <ben.horgan@arm.com> · 2026-10-02
[PATCH v2 02/12] arm_mpam: Restore the error interrupt enable from mpam_cpu_online() · Ben Horgan <ben.horgan@arm.com> · 2026-09-17
Re: [PATCH v2 02/12] arm_mpam: Restore the error interrupt enable from mpam_cpu_online() · Gavin Shan <hidden> · 2026-09-22
Re: [PATCH v2 02/12] arm_mpam: Restore the error interrupt enable from mpam_cpu_online() · James Morse <james.morse@arm.com> · 2026-10-02
[PATCH v2 07/12] arm_mpam: Initialize all of struct mon_read in mpam_restore_mbwu_state() · Ben Horgan <ben.horgan@arm.com> · 2026-09-17
Re: [PATCH v2 07/12] arm_mpam: Initialize all of struct mon_read in mpam_restore_mbwu_state() · James Morse <james.morse@arm.com> · 2026-10-02
[PATCH v2 04/12] arm_mpam: Add missing mon_sel locking in MBWU save and restore · Ben Horgan <ben.horgan@arm.com> · 2026-09-17
Re: [PATCH v2 04/12] arm_mpam: Add missing mon_sel locking in MBWU save and restore · James Morse <james.morse@arm.com> · 2026-10-02
Re: [PATCH v2 04/12] arm_mpam: Add missing mon_sel locking in MBWU save and restore · Ben Horgan <ben.horgan@arm.com> · 2026-10-02
[PATCH v2 09/12] arm_mpam: resctrl: Make read_mon_cdp_safe() self consistent · Ben Horgan <ben.horgan@arm.com> · 2026-09-17
Re: [PATCH v2 09/12] arm_mpam: resctrl: Make read_mon_cdp_safe() self consistent · Gavin Shan <hidden> · 2026-09-22
Re: [PATCH v2 09/12] arm_mpam: resctrl: Make read_mon_cdp_safe() self consistent · James Morse <james.morse@arm.com> · 2026-10-02
[PATCH v2 11/12] arm_mpam: Switch to kvzmalloc_objs() for allocation of component cfg · Ben Horgan <ben.horgan@arm.com> · 2026-09-17
Re: [PATCH v2 11/12] arm_mpam: Switch to kvzmalloc_objs() for allocation of component cfg · Gavin Shan <hidden> · 2026-09-22
Re: [PATCH v2 11/12] arm_mpam: Switch to kvzmalloc_objs() for allocation of component cfg · James Morse <james.morse@arm.com> · 2026-10-02
[PATCH v2 08/12] arm_mpam: resctrl: Correct check that existing class is L3 · Ben Horgan <ben.horgan@arm.com> · 2026-09-17
Re: [PATCH v2 08/12] arm_mpam: resctrl: Correct check that existing class is L3 · Gavin Shan <hidden> · 2026-09-22
Re: [PATCH v2 08/12] arm_mpam: resctrl: Correct check that existing class is L3 · James Morse <james.morse@arm.com> · 2026-10-02
[PATCH v2 06/12] arm_mpam: Use __ris_msmon_read() for saving MBWU state · Ben Horgan <ben.horgan@arm.com> · 2026-09-17
Re: [PATCH v2 06/12] arm_mpam: Use __ris_msmon_read() for saving MBWU state · James Morse <james.morse@arm.com> · 2026-10-02
Re: [PATCH v2 06/12] arm_mpam: Use __ris_msmon_read() for saving MBWU state · Ben Horgan <ben.horgan@arm.com> · 2026-10-02
Re: [PATCH v2 06/12] arm_mpam: Use __ris_msmon_read() for saving MBWU state · James Morse <james.morse@arm.com> · 2026-10-02
[PATCH v2 10/12] arm_mpam: Don't loop forever if there is the maximum possible amount of PARTIDs · Ben Horgan <ben.horgan@arm.com> · 2026-09-17
Re: [PATCH v2 10/12] arm_mpam: Don't loop forever if there is the maximum possible amount of PARTIDs · Gavin Shan <hidden> · 2026-09-22
Re: [PATCH v2 10/12] arm_mpam: Don't loop forever if there is the maximum possible amount of PARTIDs · James Morse <james.morse@arm.com> · 2026-10-02
[PATCH v2 12/12] arm_mpam: resctrl: Don't stop early when tearing down a class · Ben Horgan <ben.horgan@arm.com> · 2026-09-17
Re: [PATCH v2 12/12] arm_mpam: resctrl: Don't stop early when tearing down a class · Gavin Shan <hidden> · 2026-09-22
Re: [PATCH v2 00/12] arm_mpam: minor fixes at v7.2 · Shaopeng Tan (Fujitsu) <hidden> · 2026-10-07

Re: [PATCH v2 11/12] arm_mpam: Switch to kvzmalloc_objs() for allocation of component cfg

From: Gavin Shan <hidden>
Date: 2026-09-22 05:45:23
Also in: lkml

On 9/18/26 12:56 AM, Ben Horgan wrote:

Each component cfg is sized by the size of a per-PARTID multiplied by the
number of PARTIDs. On a platform sized to push the limits of the
specification, the allocation using kzalloc_objs() will consistently
fail. Change to use kvzmalloc_objs() so that large allocations fall back to
vmalloc() based allocations.

Fixes: 09b89d2a72f3 ("arm_mpam: Allow configuration to be applied and restored during cpu online")
Signed-off-by: Ben Horgan <ben.horgan@arm.com>
Tested-by: Gavin Shan <redacted>
---
  drivers/resctrl/mpam_devices.c | 4 ++--
  1 file changed, 2 insertions(+), 2 deletions(-)

Reviewed-by: Gavin Shan <redacted>

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