From: Fuad Tabba <fuad.tabba@linux.dev>
To: Marc Zyngier <maz@kernel.org>, Oliver Upton <oupton@kernel.org>,
kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org
Cc: Joey Gouly <joey.gouly@arm.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Zenghui Yu <yuzenghui@huawei.com>,
Steffen Eiden <seiden@linux.ibm.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Vincent Donnefort <vdonnefort@google.com>,
Fuad Tabba <tabba@google.com>,
kvm@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH 16/16] KVM: arm64: Advertise ECV, HAFT and ETS3 to protected VMs
Date: Mon, 9 Nov 2026 08:32:05 +0000 [thread overview]
Message-ID: <20261109083205.806619-17-fuad.tabba@linux.dev> (raw)
In-Reply-To: <20261109083205.806619-1-fuad.tabba@linux.dev>
Advertise FEAT_ECV, FEAT_HAFT and FEAT_ETS3 to protected VMs, with ECV
capped at IMP and HAFDBS at HAFT, since CNTPOFF and HDBSS only add EL2
and EL3 controls. ECV's self-synchronised counter views trap under the
same controls as CNTPCT_EL0 and CNTVCT_EL0, which kvm_handle_cntxct()
emulates.
Signed-off-by: Fuad Tabba <fuad.tabba@linux.dev>
---
arch/arm64/kvm/hyp/nvhe/sys_regs.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/arch/arm64/kvm/hyp/nvhe/sys_regs.c b/arch/arm64/kvm/hyp/nvhe/sys_regs.c
index a0f6737ff8f16..4ab0ee50eea20 100644
--- a/arch/arm64/kvm/hyp/nvhe/sys_regs.c
+++ b/arch/arm64/kvm/hyp/nvhe/sys_regs.c
@@ -173,16 +173,17 @@ static const struct pvm_ftr_bits pvmid_aa64mmfr0[] = {
MAX_FEAT(ID_AA64MMFR0_EL1, TGRAN4, IMP),
MAX_FEAT(ID_AA64MMFR0_EL1, TGRAN16, IMP),
MAX_FEAT(ID_AA64MMFR0_EL1, TGRAN64, IMP),
+ MAX_FEAT(ID_AA64MMFR0_EL1, ECV, IMP),
FEAT_END
};
static const struct pvm_ftr_bits pvmid_aa64mmfr1[] = {
- MAX_FEAT(ID_AA64MMFR1_EL1, HAFDBS, DBM),
+ MAX_FEAT(ID_AA64MMFR1_EL1, HAFDBS, HAFT),
MAX_FEAT_ENUM(ID_AA64MMFR1_EL1, VMIDBits, 16),
MAX_FEAT(ID_AA64MMFR1_EL1, HPDS, HPDS2),
MAX_FEAT(ID_AA64MMFR1_EL1, PAN, PAN3),
MAX_FEAT(ID_AA64MMFR1_EL1, SpecSEI, IMP),
- MAX_FEAT(ID_AA64MMFR1_EL1, ETS, IMP),
+ MAX_FEAT(ID_AA64MMFR1_EL1, ETS, ETS3),
MAX_FEAT(ID_AA64MMFR1_EL1, AFP, IMP),
MAX_FEAT(ID_AA64MMFR1_EL1, TIDCP1, IMP),
MAX_FEAT(ID_AA64MMFR1_EL1, CMOW, IMP),
--
2.47.3
next prev parent reply other threads:[~2026-11-09 8:33 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-11-09 8:31 [PATCH 00/16] KVM: arm64: Support debug, SVE, MOPS, PIE/POE, FPMR and more in protected VMs Fuad Tabba
2026-11-09 8:31 ` [PATCH 01/16] KVM: arm64: Add support for self-hosted debug in protected guests Fuad Tabba
2026-11-09 8:31 ` [PATCH 02/16] KVM: arm64: Remove redundant kern_hyp_va() calls from the pKVM FP sync Fuad Tabba
2026-11-09 8:31 ` [PATCH 03/16] KVM: arm64: Allocate a protected vCPU's SVE state at EL2 Fuad Tabba
2026-11-09 8:31 ` [PATCH 04/16] KVM: arm64: Advertise ID_AA64ZFR0_EL1 to protected VMs Fuad Tabba
2026-11-09 8:48 ` sashiko-bot
2026-11-09 8:50 ` Fuad Tabba
2026-11-09 8:31 ` [PATCH 05/16] KVM: arm64: Allow protected VMs to use SVE Fuad Tabba
2026-11-09 8:31 ` [PATCH 06/16] KVM: arm64: Move the VM's FGU initialisation into config.c Fuad Tabba
2026-11-09 8:31 ` [PATCH 07/16] KVM: arm64: Compute a protected vCPU's fine-grained traps at EL2 Fuad Tabba
2026-11-09 8:31 ` [PATCH 08/16] KVM: arm64: Advertise TCR2, SCTLR2, S1PIE and S1POE to protected VMs Fuad Tabba
2026-11-09 8:31 ` [PATCH 09/16] KVM: arm64: Advertise MOPS " Fuad Tabba
2026-11-09 8:31 ` [PATCH 10/16] KVM: arm64: Advertise FPMR " Fuad Tabba
2026-11-09 8:32 ` [PATCH 11/16] KVM: arm64: Advertise HBC, CLRBHB, RPRFM, CSSC and LUT " Fuad Tabba
2026-11-09 8:32 ` [PATCH 12/16] KVM: arm64: Advertise FAMINMAX, LSFE, LSUI and FPRCVT " Fuad Tabba
2026-11-09 8:32 ` [PATCH 13/16] KVM: arm64: Advertise AFP and RPRES " Fuad Tabba
2026-11-09 8:32 ` [PATCH 14/16] KVM: arm64: Advertise ECBHB, TIDCP1, TTST and LVA " Fuad Tabba
2026-11-09 8:32 ` [PATCH 15/16] KVM: arm64: Advertise FP8 and F16MM " Fuad Tabba
2026-11-09 8:32 ` Fuad Tabba [this message]
2026-11-09 20:20 ` [PATCH 00/16] KVM: arm64: Support debug, SVE, MOPS, PIE/POE, FPMR and more in " Oliver Upton
2026-11-10 7:53 ` Fuad Tabba
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20261109083205.806619-17-fuad.tabba@linux.dev \
--to=fuad.tabba@linux.dev \
--cc=catalin.marinas@arm.com \
--cc=joey.gouly@arm.com \
--cc=kvm@vger.kernel.org \
--cc=kvmarm@lists.linux.dev \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mark.rutland@arm.com \
--cc=maz@kernel.org \
--cc=oupton@kernel.org \
--cc=seiden@linux.ibm.com \
--cc=suzuki.poulose@arm.com \
--cc=tabba@google.com \
--cc=vdonnefort@google.com \
--cc=will@kernel.org \
--cc=yuzenghui@huawei.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.