From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-yw1-f202.google.com (mail-yw1-f202.google.com [209.85.128.202]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9F03D77118 for ; Mon, 3 Jun 2024 12:28:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.202 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717417739; cv=none; b=XuBb96sCJWwK0E5L+QE3GA0bQEdNOfO03Ps+SWtYlAXcbsT7URRL4+dMxMOgkOAQdXIKXDFJYvYl+U1b0nzZsre18X7I9DgkG3jazpLnJSzsjRH3NIjlQnvbWcirNsxHGINUKjmj0TAcvv4yQsyzjOnJ3bc9BAEVN/jtCSotFK8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717417739; c=relaxed/simple; bh=x84lbyLAdvxffUIQokclEzOAI8Pjk17cnvn6wlyv/R4=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=nkSBYhdN8VHBX8DRSncbRZO3pdWOlk5JD/Tp1xaN9aLTNf8x0t0IvmWHXZXPBGptJYf3CpIATfE1gqgEXDdcWUNyLFtiUzn1TZLgxbG3RpEHWMeMLK+fPy7uz15hJn/PU3KrRLdwMck454X/j/TvGdsVny8+XGZ6iIQsoAdSCrw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--tabba.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=yzFllasd; arc=none smtp.client-ip=209.85.128.202 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--tabba.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="yzFllasd" Received: by mail-yw1-f202.google.com with SMTP id 00721157ae682-62a2aec8521so67568407b3.0 for ; Mon, 03 Jun 2024 05:28:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1717417737; x=1718022537; darn=lists.linux.dev; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=iJElILGc/DFr0V7MwmCDmwJNbQ0Gt5gen+2yBiM6YFM=; b=yzFllasdm8uRZ6TL0IIdIAQc5Kg2jQPkA0wQSb+ZBPmqCQCsdgBiHnpww3/fTF28t/ JWUCboF3NSBom87LnpS1plN1mS1brE9keuZCqmnUPVacpjCY1RYxmr2duSpEFXwYj+u9 v3nUzwKBgSsgt7Kbaf24yGgjJgpP3OqZTINTxa4GTMWlIPJ2yhRpXDbtmvotsjif0qSh yx3YcHQEWGf32kfffuGzkiy8TDkfZf7IaE6pJWOfTdjrnngsHKvgef8IpZ2ZpqtEiDts HWTCGBxTXSYZgQfnYlsEQJi1oAlNs2M4mcI9/kxa80US5TLf61YzCanYLpS4nqFZS/ui zRLg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1717417737; x=1718022537; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=iJElILGc/DFr0V7MwmCDmwJNbQ0Gt5gen+2yBiM6YFM=; b=F/aUjjGpeRyYCfQLv0g9/VGD3PbL/sQ64SOiOmCnqdRUUtagtpzq7s50fJZqtIOty/ VR1rpftReb/mv5BfEVKj0iV22po4kH3j9lti1Q5wpAF3CEq2Uv4gGfQ5Sc+9jHhGn7wb W6b7n+OEtsNdepoekcTmig+kVugIy42YScaeia6E55rAN8E1GRlkD3T4VohXDPXsOmVF 1XjjLi0BKZ8qt2ypwd0aOboUiZ1nAaI4Zfq2KRvTcLWYcV4q7yUqtP4kxO+ox0WxZ7Di tpmsKl6n6pzdQ39SGiK4wqblrnXbpjEWdewWgO2UUEzEP869A+pe9IgjqZJBGayqa0HA kadA== X-Gm-Message-State: AOJu0YxGIGpG+zEPxJSvCU4TDH/4vjtwLzgvElbtFFrxzq9Da216ZufX bqVqVXuHkFD8i4ozLtN5Wk2VHzAHKIUSDx/qssLYAGe35LLSXJcQU4suoVxMKGFAhXpjuvAa4zh 5b6LM/FtsAZaoJZ6+8ty1zOhllEHplJnGQzD7CTOR/+jyOexpHlI9SSEgtvVpzLL1dXSZTvoJhK ewAzp0bSjJnu8hcmKbQyx4Y6oivFs= X-Google-Smtp-Source: AGHT+IH9EZr0+cP35eFhh0weNHHYeukIG+afizsQT2UWTA3EwT7k/xipG8LyTSJ/NWUCj+R123OVNcA/bQ== X-Received: from fuad.c.googlers.com ([fda3:e722:ac3:cc00:28:9cb1:c0a8:1613]) (user=tabba job=sendgmr) by 2002:a05:690c:39c:b0:627:96bd:b2b with SMTP id 00721157ae682-62c797ecc09mr30469737b3.6.1717417736650; Mon, 03 Jun 2024 05:28:56 -0700 (PDT) Date: Mon, 3 Jun 2024 13:28:43 +0100 In-Reply-To: <20240603122852.3923848-1-tabba@google.com> Precedence: bulk X-Mailing-List: kvmarm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20240603122852.3923848-1-tabba@google.com> X-Mailer: git-send-email 2.45.1.288.g0e0cd299f1-goog Message-ID: <20240603122852.3923848-2-tabba@google.com> Subject: [PATCH v4 1/9] KVM: arm64: Reintroduce __sve_save_state From: Fuad Tabba To: kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org Cc: maz@kernel.org, will@kernel.org, qperret@google.com, tabba@google.com, seanjc@google.com, alexandru.elisei@arm.com, catalin.marinas@arm.com, philmd@linaro.org, james.morse@arm.com, suzuki.poulose@arm.com, oliver.upton@linux.dev, mark.rutland@arm.com, broonie@kernel.org, joey.gouly@arm.com, rananta@google.com, yuzenghui@huawei.com Content-Type: text/plain; charset="UTF-8" Now that the hypervisor is handling the host sve state in protected mode, it needs to be able to save it. This reverts commit e66425fc9ba3 ("KVM: arm64: Remove unused __sve_save_state"). Reviewed-by: Oliver Upton Signed-off-by: Fuad Tabba --- arch/arm64/include/asm/kvm_hyp.h | 1 + arch/arm64/kvm/hyp/fpsimd.S | 6 ++++++ 2 files changed, 7 insertions(+) diff --git a/arch/arm64/include/asm/kvm_hyp.h b/arch/arm64/include/asm/kvm_hyp.h index 3e80464f8953..2ab23589339a 100644 --- a/arch/arm64/include/asm/kvm_hyp.h +++ b/arch/arm64/include/asm/kvm_hyp.h @@ -111,6 +111,7 @@ void __debug_restore_host_buffers_nvhe(struct kvm_vcpu *vcpu); void __fpsimd_save_state(struct user_fpsimd_state *fp_regs); void __fpsimd_restore_state(struct user_fpsimd_state *fp_regs); +void __sve_save_state(void *sve_pffr, u32 *fpsr); void __sve_restore_state(void *sve_pffr, u32 *fpsr); u64 __guest_enter(struct kvm_vcpu *vcpu); diff --git a/arch/arm64/kvm/hyp/fpsimd.S b/arch/arm64/kvm/hyp/fpsimd.S index 61e6f3ba7b7d..e950875e31ce 100644 --- a/arch/arm64/kvm/hyp/fpsimd.S +++ b/arch/arm64/kvm/hyp/fpsimd.S @@ -25,3 +25,9 @@ SYM_FUNC_START(__sve_restore_state) sve_load 0, x1, x2, 3 ret SYM_FUNC_END(__sve_restore_state) + +SYM_FUNC_START(__sve_save_state) + mov x2, #1 + sve_save 0, x1, x2, 3 + ret +SYM_FUNC_END(__sve_save_state) -- 2.45.1.288.g0e0cd299f1-goog