[v2,04/10] RISC-V: KVM: Set kvm_riscv_aia_nr_hgei to zero

Message ID	20230612053932.58604-5-apatel@ventanamicro.com (mailing list archive)
State	New, archived
Headers	show Return-Path: <kvm-owner@vger.kernel.org> From: Anup Patel <apatel@ventanamicro.com> To: Paolo Bonzini <pbonzini@redhat.com>, Atish Patra <atishp@atishpatra.org> Cc: Palmer Dabbelt <palmer@dabbelt.com>, Paul Walmsley <paul.walmsley@sifive.com>, Andrew Jones <ajones@ventanamicro.com>, kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, Anup Patel <apatel@ventanamicro.com>, Atish Patra <atishp@rivosinc.com> Subject: [PATCH v2 04/10] RISC-V: KVM: Set kvm_riscv_aia_nr_hgei to zero Date: Mon, 12 Jun 2023 11:09:26 +0530 Message-Id: <20230612053932.58604-5-apatel@ventanamicro.com> In-Reply-To: <20230612053932.58604-1-apatel@ventanamicro.com> References: <20230612053932.58604-1-apatel@ventanamicro.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk
Series	RISC-V KVM in-kernel AIA irqchip \| expand [v2,00/10] RISC-V KVM in-kernel AIA irqchip [v2,01/10] RISC-V: KVM: Implement guest external interrupt line management [v2,02/10] RISC-V: KVM: Add IMSIC related defines [v2,03/10] RISC-V: KVM: Add APLIC related defines [v2,04/10] RISC-V: KVM: Set kvm_riscv_aia_nr_hgei to zero [v2,05/10] RISC-V: KVM: Skeletal in-kernel AIA irqchip support [v2,06/10] RISC-V: KVM: Implement device interface for AIA irqchip [v2,07/10] RISC-V: KVM: Add in-kernel emulation of AIA APLIC [v2,08/10] RISC-V: KVM: Expose APLIC registers as attributes of AIA irqchip [v2,09/10] RISC-V: KVM: Add in-kernel virtualization of AIA IMSIC [v2,10/10] RISC-V: KVM: Expose IMSIC registers as attributes of AIA irqchip

Message ID

20230612053932.58604-5-apatel@ventanamicro.com (mailing list archive)

State

New, archived

Headers

From: Anup Patel <apatel@ventanamicro.com>
To: Paolo Bonzini <pbonzini@redhat.com>,
        Atish Patra <atishp@atishpatra.org>
Cc: Palmer Dabbelt <palmer@dabbelt.com>,
        Paul Walmsley <paul.walmsley@sifive.com>,
        Andrew Jones <ajones@ventanamicro.com>, kvm@vger.kernel.org,
        kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org,
        linux-kernel@vger.kernel.org, Anup Patel <apatel@ventanamicro.com>,
        Atish Patra <atishp@rivosinc.com>
Subject: [PATCH v2 04/10] RISC-V: KVM: Set kvm_riscv_aia_nr_hgei to zero
Date: Mon, 12 Jun 2023 11:09:26 +0530
Message-Id: <20230612053932.58604-5-apatel@ventanamicro.com>
In-Reply-To: <20230612053932.58604-1-apatel@ventanamicro.com>
References: <20230612053932.58604-1-apatel@ventanamicro.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

Series

RISC-V KVM in-kernel AIA irqchip | expand

Commit Message

Anup Patel June 12, 2023, 5:39 a.m. UTC

We hard-code the kvm_riscv_aia_nr_hgei to zero until IMSIC HW
guest file support is added in KVM RISC-V.

Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
---
 arch/riscv/kvm/aia.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/arch/riscv/kvm/aia.c b/arch/riscv/kvm/aia.c
index c78c06d99e39..3f97575707eb 100644
--- a/arch/riscv/kvm/aia.c
+++ b/arch/riscv/kvm/aia.c
@@ -408,7 +408,7 @@  int kvm_riscv_aia_alloc_hgei(int cpu, struct kvm_vcpu *owner,
 
 	raw_spin_unlock_irqrestore(&hgctrl->lock, flags);
 
-	/* TODO: To be updated later by AIA in-kernel irqchip support */
+	/* TODO: To be updated later by AIA IMSIC HW guest file support */
 	if (hgei_va)
 		*hgei_va = NULL;
 	if (hgei_pa)
@@ -610,6 +610,14 @@  int kvm_riscv_aia_init(void)
 	if (kvm_riscv_aia_nr_hgei)
 		kvm_riscv_aia_nr_hgei--;
 
+	/*
+	 * Number of usable HGEI lines should be minimum of per-HART
+	 * IMSIC guest files and number of bits in HGEIE
+	 *
+	 * TODO: To be updated later by AIA IMSIC HW guest file support
+	 */
+	kvm_riscv_aia_nr_hgei = 0;
+
 	/* Initialize guest external interrupt line management */
 	rc = aia_hgei_init();
 	if (rc)

[v2,04/10] RISC-V: KVM: Set kvm_riscv_aia_nr_hgei to zero

Commit Message

Patch