From nobody Mon Feb 9 18:43:40 2026 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 9478722B5AB for ; Tue, 10 Dec 2024 05:57:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733810224; cv=none; b=ORFZKlCdVF0bIlGsgXuJVuWQGr1gSKCFqJANzjcomZIfEJ8lFwZo/q9wNuI7iFoIGntXJg/l13J9QrOEM/HBZGDQ22FH8BajH8rEpRqRCSsnRR/UA8ZLxEnu7oJqMI954Oe8f8TpHbCN25tZ7a8BeeS3PF7qsf6yhF4Dt6Z5+1I= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733810224; c=relaxed/simple; bh=XPh0+Rr+R964H/rZFfWv0puI6J1X0RHc0/MYTvCovHk=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=Xtcp5AKSHdV8fTwqpPunAnPTIp88SMFq8I8qVg2hrfUmWV8jFpglmaEWJ/uDxO7E82izAMeiAv7oFnaoZ82zFPsARcdh9nDo1mBe8A0PdIFaecZd2fzhMb8QGLQCAtmFn3hbxwBDgSUEZreLYAW98U6dAqiekmbXa9ouMJNE6WI= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 4477D339; Mon, 9 Dec 2024 21:57:30 -0800 (PST) Received: from a077893.arm.com (unknown [10.163.48.173]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 23A9B3F58B; Mon, 9 Dec 2024 21:56:57 -0800 (PST) From: Anshuman Khandual To: linux-kernel@vger.kernel.org, kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, maz@kernel.org Cc: ryan.roberts@arm.com, Anshuman Khandual , Oliver Upton , James Morse , Suzuki K Poulose , Catalin Marinas , Will Deacon , Mark Brown Subject: [PATCH V2 44/46] KVM: arm64: nv: Add FEAT_FGT2 registers access from virtual EL2 Date: Tue, 10 Dec 2024 11:23:09 +0530 Message-Id: <20241210055311.780688-45-anshuman.khandual@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20241210055311.780688-1-anshuman.khandual@arm.com> References: <20241210055311.780688-1-anshuman.khandual@arm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" This adds VNCR-capable HDFGRTR2_EL2, HDFGWTR2_EL2, HFGRTR2_EL2, HFGWTR2_EL2 and HFGITR2_EL2 FEAT_FGT2 registers into enum vcpu_sysreg, and also enables their access from virtual EL2 environment. Cc: Marc Zyngier Cc: Oliver Upton Cc: James Morse Cc: Suzuki K Poulose Cc: linux-arm-kernel@lists.infradead.org Cc: kvmarm@lists.linux.dev Cc: linux-kernel@vger.kernel.org Signed-off-by: Anshuman Khandual --- arch/arm64/include/asm/kvm_host.h | 5 +++++ arch/arm64/include/asm/vncr_mapping.h | 5 +++++ arch/arm64/kvm/sys_regs.c | 5 +++++ 3 files changed, 15 insertions(+) diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm= _host.h index e18e9244d17a..73ff8772ac22 100644 --- a/arch/arm64/include/asm/kvm_host.h +++ b/arch/arm64/include/asm/kvm_host.h @@ -548,6 +548,11 @@ enum vcpu_sysreg { VNCR(HDFGWTR_EL2), VNCR(HAFGRTR_EL2), =20 + VNCR(HDFGRTR2_EL2), + VNCR(HDFGWTR2_EL2), + VNCR(HFGITR2_EL2), + VNCR(HFGRTR2_EL2), + VNCR(HFGWTR2_EL2), VNCR(CNTVOFF_EL2), VNCR(CNTV_CVAL_EL0), VNCR(CNTV_CTL_EL0), diff --git a/arch/arm64/include/asm/vncr_mapping.h b/arch/arm64/include/asm= /vncr_mapping.h index 4f9bbd4d6c26..d6110d7c36e2 100644 --- a/arch/arm64/include/asm/vncr_mapping.h +++ b/arch/arm64/include/asm/vncr_mapping.h @@ -38,6 +38,8 @@ #define VNCR_HFGRTR_EL2 0x1B8 #define VNCR_HFGWTR_EL2 0x1C0 #define VNCR_HFGITR_EL2 0x1C8 +#define VNCR_HDFGRTR2_EL2 0x1A0 +#define VNCR_HDFGWTR2_EL2 0x1B0 #define VNCR_HDFGRTR_EL2 0x1D0 #define VNCR_HDFGWTR_EL2 0x1D8 #define VNCR_ZCR_EL1 0x1E0 @@ -52,6 +54,9 @@ #define VNCR_PIRE0_EL1 0x290 #define VNCR_PIR_EL1 0x2A0 #define VNCR_POR_EL1 0x2A8 +#define VNCR_HFGRTR2_EL2 0x2C0 +#define VNCR_HFGWTR2_EL2 0x2C8 +#define VNCR_HFGITR2_EL2 0x310 #define VNCR_ICH_LR0_EL2 0x400 #define VNCR_ICH_LR1_EL2 0x408 #define VNCR_ICH_LR2_EL2 0x410 diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c index 83c6b4a07ef5..c9e0e9322bd3 100644 --- a/arch/arm64/kvm/sys_regs.c +++ b/arch/arm64/kvm/sys_regs.c @@ -3004,9 +3004,14 @@ static const struct sys_reg_desc sys_reg_descs[] =3D= { EL2_REG_VNCR(VTCR_EL2, reset_val, 0), =20 { SYS_DESC(SYS_DACR32_EL2), undef_access, reset_unknown, DACR32_EL2 }, + EL2_REG_VNCR(HDFGRTR2_EL2, reset_val, 0), + EL2_REG_VNCR(HDFGWTR2_EL2, reset_val, 0), + EL2_REG_VNCR(HFGRTR2_EL2, reset_val, 0), + EL2_REG_VNCR(HFGWTR2_EL2, reset_val, 0), EL2_REG_VNCR(HDFGRTR_EL2, reset_val, 0), EL2_REG_VNCR(HDFGWTR_EL2, reset_val, 0), EL2_REG_VNCR(HAFGRTR_EL2, reset_val, 0), + EL2_REG_VNCR(HFGITR2_EL2, reset_val, 0), EL2_REG_REDIR(SPSR_EL2, reset_val, 0), EL2_REG_REDIR(ELR_EL2, reset_val, 0), { SYS_DESC(SYS_SP_EL1), access_sp_el1}, --=20 2.25.1