From: Marc Zyngier <maz@kernel.org>
To: Joey Gouly <joey.gouly@arm.com>
Cc: linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev,
anshuman.khandual@arm.com, james.morse@arm.com,
Oliver Upton <oliver.upton@linux.dev>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Zenghui Yu <yuzenghui@huawei.com>,
Jing Zhang <jingzhangos@google.com>,
Shameerali Kolothum Thodi <shameerali.kolothum.thodi@huawei.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>
Subject: Re: [PATCH v5 4/7] KVM: arm64: Fix missing traps of guest accesses to the MPAM registers
Date: Thu, 17 Oct 2024 14:43:17 +0100 [thread overview]
Message-ID: <86jze64zgq.wl-maz@kernel.org> (raw)
In-Reply-To: <20241015133923.3910916-5-joey.gouly@arm.com>
On Tue, 15 Oct 2024 14:39:20 +0100,
Joey Gouly <joey.gouly@arm.com> wrote:
>
> diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
> index dad88e31f953..c21840042785 100644
> --- a/arch/arm64/kvm/sys_regs.c
> +++ b/arch/arm64/kvm/sys_regs.c
> @@ -2517,8 +2517,11 @@ static const struct sys_reg_desc sys_reg_descs[] = {
> { SYS_DESC(SYS_LOREA_EL1), trap_loregion },
> { SYS_DESC(SYS_LORN_EL1), trap_loregion },
> { SYS_DESC(SYS_LORC_EL1), trap_loregion },
> + { SYS_DESC(SYS_MPAMIDR_EL1), undef_access },
> { SYS_DESC(SYS_LORID_EL1), trap_loregion },
>
> + { SYS_DESC(SYS_MPAM1_EL1), undef_access },
> + { SYS_DESC(SYS_MPAM0_EL1), undef_access },
> { SYS_DESC(SYS_VBAR_EL1), access_rw, reset_val, VBAR_EL1, 0 },
> { SYS_DESC(SYS_DISR_EL1), NULL, reset_val, DISR_EL1, 0 },
For completeness, can you please add the EL2 MPAM registers to that
list, making them equally UNDEF?
Thanks,
M.
--
Without deviation from the norm, progress is not possible.
next prev parent reply other threads:[~2024-10-17 14:03 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-15 13:39 [PATCH v5 0/7] KVM: arm64: Hide unsupported MPAM from the guest Joey Gouly
2024-10-15 13:39 ` [PATCH v5 1/7] arm64/sysreg: Convert existing MPAM sysregs and add the remaining entries Joey Gouly
2024-10-16 23:41 ` Gavin Shan
2024-10-15 13:39 ` [PATCH v5 2/7] arm64: head.S: Initialise MPAM EL2 registers and disable traps Joey Gouly
2024-10-16 23:41 ` Gavin Shan
2024-10-15 13:39 ` [PATCH v5 3/7] arm64: cpufeature: discover CPU support for MPAM Joey Gouly
2024-10-17 2:36 ` Gavin Shan
2024-10-15 13:39 ` [PATCH v5 4/7] KVM: arm64: Fix missing traps of guest accesses to the MPAM registers Joey Gouly
2024-10-17 0:10 ` Oliver Upton
2024-10-17 10:58 ` Joey Gouly
2024-10-17 16:07 ` Oliver Upton
2024-10-22 14:31 ` Joey Gouly
2024-10-17 2:37 ` Gavin Shan
2024-10-17 11:54 ` Marc Zyngier
2024-10-17 13:06 ` Joey Gouly
2024-10-17 13:38 ` Marc Zyngier
2024-10-17 13:43 ` Marc Zyngier [this message]
2024-10-15 13:39 ` [PATCH v5 5/7] KVM: arm64: Add a macro for creating filtered sys_reg_descs entries Joey Gouly
2024-10-17 2:37 ` Gavin Shan
2024-10-15 13:39 ` [PATCH v5 6/7] KVM: arm64: Disable MPAM visibility by default and ignore VMM writes Joey Gouly
2024-10-17 2:37 ` Gavin Shan
2024-10-15 13:39 ` [PATCH v5 7/7] KVM: arm64: selftests: Test ID_AA64PFR0.MPAM isn't completely ignored Joey Gouly
2024-10-17 0:41 ` Gavin Shan
2024-10-17 11:03 ` Joey Gouly
2024-10-17 8:34 ` [PATCH v5 0/7] KVM: arm64: Hide unsupported MPAM from the guest Shameerali Kolothum Thodi
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