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From: Mark Brown <broonie@kernel.org>
To: Catalin Marinas <catalin.marinas@arm.com>,
	 Will Deacon <will@kernel.org>, Marc Zyngier <maz@kernel.org>,
	 Joey Gouly <joey.gouly@arm.com>,
	Suzuki K Poulose <suzuki.poulose@arm.com>,
	 Shuah Khan <shuah@kernel.org>, Oliver Upton <oupton@kernel.org>,
	 Fuad Tabba <fuad.tabba@linux.dev>
Cc: Peter Maydell <peter.maydell@linaro.org>,
	 Leonardo Bras <leo.bras@arm.com>,
	Wei-Lin Chang <weilin.chang@arm.com>,
	 Yao Yuan <yaoyuan@linux.alibaba.com>,
	linux-arm-kernel@lists.infradead.org,  linux-doc@vger.kernel.org,
	kvmarm@lists.linux.dev,  linux-kselftest@vger.kernel.org,
	linux-kernel@vger.kernel.org,  Mark Brown <broonie@kernel.org>
Subject: [PATCH v21 12/15] KVM: selftests: arm64: Add GCS to set_id_regs
Date: Wed, 30 Sep 2026 22:48:22 +0100	[thread overview]
Message-ID: <20260930-arm64-gcs-v21-12-3556644cd927@kernel.org> (raw)
In-Reply-To: <20260930-arm64-gcs-v21-0-3556644cd927@kernel.org>

Now that GCS is configurable via the ID registers update set_id_regs to
cover ID_AA64PFR1_EL1.GCS.

Signed-off-by: Mark Brown <broonie@kernel.org>
---
 tools/testing/selftests/kvm/arm64/set_id_regs.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/tools/testing/selftests/kvm/arm64/set_id_regs.c b/tools/testing/selftests/kvm/arm64/set_id_regs.c
index cb5e6358c59c..9db8516748cc 100644
--- a/tools/testing/selftests/kvm/arm64/set_id_regs.c
+++ b/tools/testing/selftests/kvm/arm64/set_id_regs.c
@@ -154,6 +154,7 @@ static const struct reg_ftr_bits ftr_id_aa64pfr0_el1[] = {
 
 static const struct reg_ftr_bits ftr_id_aa64pfr1_el1[] = {
 	REG_FTR_BITS(FTR_LOWER_SAFE, ID_AA64PFR1_EL1, DF2, 0),
+	REG_FTR_BITS(FTR_LOWER_SAFE, ID_AA64PFR1_EL1, GCS, 0),
 	REG_FTR_BITS(FTR_LOWER_SAFE, ID_AA64PFR1_EL1, CSV2_frac, 0),
 	REG_FTR_BITS(FTR_LOWER_SAFE, ID_AA64PFR1_EL1, SSBS, ID_AA64PFR1_EL1_SSBS_NI),
 	REG_FTR_BITS(FTR_LOWER_SAFE, ID_AA64PFR1_EL1, BT, 0),
@@ -818,6 +819,12 @@ struct reg_ftr_val {
 	  .mask = r ## _ ## f ## _MASK,				\
 	  .val = (r ## _ ## f ## _ ## v  << r ## _ ## f ## _SHIFT) }
 
+static const struct reg_ftr_val gcs_no_s1pie[] = {
+	REG_FTR_VAL(ID_AA64PFR1_EL1, GCS, IMP),
+	REG_FTR_VAL(ID_AA64MMFR3_EL1, S1PIE, NI),
+	{ }
+};
+
 static const struct reg_ftr_val s1pie_no_tcr2[] = {
 	REG_FTR_VAL(ID_AA64MMFR3_EL1, TCRX, NI),
 	REG_FTR_VAL(ID_AA64MMFR3_EL1, S1PIE, IMP),
@@ -836,6 +843,7 @@ struct ftr_config {
 };
 
 static const struct ftr_config invalid_configs[] = {
+	{ .name = "GCS without S1PIE", .regs = gcs_no_s1pie },
 	{ .name = "S1PIE without TCRX", .regs = s1pie_no_tcr2 },
 	{ .name = "S1POE without TCRX", .regs = s1poe_no_tcr2 },
 };

-- 
2.47.3


  parent reply	other threads:[~2026-09-30 21:49 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-09-30 21:48 [PATCH v21 00/15] KVM: arm64: Provide guest support for GCS Mark Brown
2026-09-30 21:48 ` [PATCH v21 01/15] arm64/gcs: Ensure FGTs for EL1 GCS instructions are disabled Mark Brown
2026-09-30 21:48 ` [PATCH v21 02/15] KVM: arm64: Refuse to start a guest with S1PIE or S1POE but not TCR2 Mark Brown
2026-09-30 21:48 ` [PATCH v21 03/15] KVM: arm64: Manage GCS access and registers for guests Mark Brown
2026-09-30 21:48 ` [PATCH v21 04/15] KVM: arm64: Ensure GCS memory effects are visible Mark Brown
2026-09-30 21:48 ` [PATCH v21 05/15] KVM: arm64: Set PSTATE.EXLOCK when entering an exception Mark Brown
2026-09-30 21:48 ` [PATCH v21 06/15] KVM: arm64: Validate GCS exception lock when emulating ERET Mark Brown
2026-09-30 21:48 ` [PATCH v21 07/15] KVM: arm64: Forward GCS exceptions to nested guests Mark Brown
2026-09-30 21:48 ` [PATCH v21 08/15] KVM: arm64: Enforce EXLOCK for SPSR and ELR Mark Brown
2026-09-30 21:48 ` [PATCH v21 09/15] KVM: arm64: Allow GCS to be enabled for guests Mark Brown
2026-09-30 21:48 ` [PATCH v21 10/15] KVM: selftests: arm64: Check that invalid feature combinations are rejected Mark Brown
2026-09-30 21:48 ` [PATCH v21 11/15] KVM: selftests: arm64: Add GCS registers to get-reg-list Mark Brown
2026-09-30 21:48 ` Mark Brown [this message]
2026-09-30 21:48 ` [PATCH v21 13/15] KVM: selftests: arm64: Only restore SPSR_EL1 and ELR_EL1 if they change Mark Brown
2026-09-30 21:48 ` [PATCH v21 14/15] tools: Synchronise the kernel esr.h Mark Brown
2026-09-30 21:48 ` [PATCH v21 15/15] KVM: selftests: arm64: Add GCS EXLOCK exception emulation test Mark Brown

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