[PATCH 01/13] RISC-V: KVM: Fix the size parameter check in SBI SFENCE calls

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To: Atish Patra <atish.patra@xxxxxxxxx>
Subject: [PATCH 01/13] RISC-V: KVM: Fix the size parameter check in SBI SFENCE calls
From: Anup Patel <apatel@xxxxxxxxxxxxxxxx>
Date: Thu, 5 Jun 2025 11:44:46 +0530
Cc: Palmer Dabbelt <palmer@xxxxxxxxxxx>, Paul Walmsley <paul.walmsley@xxxxxxxxxx>, Alexandre Ghiti <alex@xxxxxxxx>, Andrew Jones <ajones@xxxxxxxxxxxxxxxx>, Anup Patel <anup@xxxxxxxxxxxxxx>, kvm@xxxxxxxxxxxxxxx, kvm-riscv@xxxxxxxxxxxxxxxxxxx, linux-riscv@xxxxxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, Anup Patel <apatel@xxxxxxxxxxxxxxxx>
In-reply-to: <20250605061458.196003-1-apatel@ventanamicro.com>
References: <20250605061458.196003-1-apatel@ventanamicro.com>

As-per the SBI specification, an SBI remote fence operation applies
to the entire address space if either:
1) start_addr and size are both 0
2) size is equal to 2^XLEN-1

Follow-Ups:
- Re: [PATCH 01/13] RISC-V: KVM: Fix the size parameter check in SBI SFENCE calls
  - From: Anup Patel
- Re: [PATCH 01/13] RISC-V: KVM: Fix the size parameter check in SBI SFENCE calls
  - From: Atish Patra

References:
- [PATCH 00/13] MMU related improvements for KVM RISC-V
  - From: Anup Patel

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