From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wm1-f74.google.com (mail-wm1-f74.google.com [209.85.128.74]) (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 7C82A2DA756 for ; Sun, 14 Jun 2026 16:33:40 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.74 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781454821; cv=none; b=FdOVqhCvWj444uNJqAUC5z8coIBRFYnBtip1IGkItF7mTCCh8YO0XXSn1wbtqG8aEVp+1KCvJgNbqYWym8vbscVnm/ooGJZLOnwxOigmHQ1JbuFUSUR6lZunZnSDed8yPP6yiYcaCZ+4smdJFLBnC2k5epzHwXlMosnm6QYJ3Bk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781454821; c=relaxed/simple; bh=Om9tDyrkzAMYgiitUGCRlH8JJcWHv74okAqDlcHmcfE=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=LEPS0i1gr0eSLwb5ZNzoXHTPHlKnq9hdChHpebfV3Nc3ENDnEqVIHYmoPuWBNAaplc7t+aRU3bqG5s4J7/F9SZ2VV176M+r79oSbY7MY5ilW9NZ1oJTC275Ah9kVHv/rBBeScKaDd7Gi9bfNeOmhPAOAj4hQhUDFnXEb/CNXjD4= 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=ghsgdrb9; arc=none smtp.client-ip=209.85.128.74 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="ghsgdrb9" Received: by mail-wm1-f74.google.com with SMTP id 5b1f17b1804b1-490bae3a39bso23204845e9.1 for ; Sun, 14 Jun 2026 09:33:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1781454819; x=1782059619; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=r0hMb6JFLji8duaB2XeitlKTMM8QIWRSHjGJV9xdd+o=; b=ghsgdrb9af7xBZxO3UnHUHMa84tVQRL7LhCtJlp85OH1cJBCw00mp7lYNUxUS2nqbi pPwmNwnBEneZyBLGGeEYoIdFdU//qfRjOh7Qc02EiCMKOt/mlLUVCTxWfeGQEzyniXro lv+UCLdwiNpcNM0pe5jvyrCdNz47D5FRD5QkEDdukusaCDrE+aFSElUPl9RNUGXOInsG PFCX4+cxmkm7m7xhCr9H9hwLjXHiTLFRmo5nW2AtTW8q7iL3BrigFXwua9GvWAcU2V8T oQqgbpWmfEpkbNv8831Xkz6PfeVyzFiejd35/Fs0jhMjMkmaKCk/f2mv6i6M50Exfjjo eA7g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1781454819; x=1782059619; 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=r0hMb6JFLji8duaB2XeitlKTMM8QIWRSHjGJV9xdd+o=; b=CptlRveK1fEhV5VCKr0zS0driS7rRd4Jc0eE2qyOtccr3nZFTafBoMzCK/7g7gtTJC qL91cFIiM80DY7Y6kb8UnwSO9DRB9JfMck/T3+0Xg57x1lYSpqNbnr8e/kmGdDdbDRkZ VUPeAga5396mbBzEfno13sbsPSgxvFVherHjZ6QbKvdDH1yEu2esGaaHnp+QgEBPn+L/ nhXc3H+TLWowXrKhmdBI/XywSAvNhD0fT/gMx0XN5IiQHWj9yrYtVqD7QirJKVm9kKRo vQOE02d8bLnBRs9i0wckB8w5QSFTzxMJPazEYKDWnZjKxTtiFBsZzs3X2546BocYSv7h rqcA== X-Forwarded-Encrypted: i=1; AFNElJ+R13+NJKZspkrOvjrruM5y2m6iyjUajG3cjcfdvvF8JaIjsqf9qwxqYkQh86XcL8WQT1UMxYKFqUgm1FQ=@vger.kernel.org X-Gm-Message-State: AOJu0YyKfk6WnAkWV4m0ixKUhDg1C7/Z2s9ydPKjAYJh/sQRe6Yzr87L MFyEvUx8IwnjtRUzz3vaN77gJkSrQNDp3daRPH+wYJZd19Nqq6/SKqbPV+vWoGBaE4fniEk0YHJ hSg== X-Received: from wmcv17.prod.google.com ([2002:a05:600c:4291:b0:490:ae4c:a69c]) (user=tabba job=prod-delivery.src-stubby-dispatcher) by 2002:a05:600c:6612:b0:490:bb45:79ee with SMTP id 5b1f17b1804b1-490ec33d4cfmr133385485e9.0.1781454818769; Sun, 14 Jun 2026 09:33:38 -0700 (PDT) Date: Sun, 14 Jun 2026 17:33:30 +0100 In-Reply-To: <20260614163336.3490925-1-tabba@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260614163336.3490925-1-tabba@google.com> X-Mailer: git-send-email 2.54.0.1136.gdb2ca164c4-goog Message-ID: <20260614163336.3490925-2-tabba@google.com> Subject: [PATCH 1/7] KVM: arm64: Set ESR_ELx.IL for injected undefined exceptions at EL2 From: Fuad Tabba To: Marc Zyngier , Oliver Upton , linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, linux-kernel@vger.kernel.org Cc: Catalin Marinas , Will Deacon , Joey Gouly , Steffen Eiden , Suzuki K Poulose , Zenghui Yu , Vincent Donnefort , Sascha Bischoff , tabba@google.com Content-Type: text/plain; charset="UTF-8" inject_undef64() constructs an ESR with EC=0 (Unknown) but does not set IL. The architecture mandates IL=1 for EC=0 unconditionally (ARM DDI 0487, ESR_ELx.IL description), so the injected syndrome is one that conforming hardware cannot produce. Set ESR_ELx_IL in the constructed syndrome. Fixes: e5d40a5a97c1 ("KVM: arm64: pkvm: Add a generic synchronous exception injection primitive") Reported-by: sashiko Signed-off-by: Fuad Tabba --- arch/arm64/kvm/hyp/nvhe/sys_regs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/kvm/hyp/nvhe/sys_regs.c b/arch/arm64/kvm/hyp/nvhe/sys_regs.c index 8c3fbb413a06..9767adf1f73e 100644 --- a/arch/arm64/kvm/hyp/nvhe/sys_regs.c +++ b/arch/arm64/kvm/hyp/nvhe/sys_regs.c @@ -278,7 +278,7 @@ static void inject_sync64(struct kvm_vcpu *vcpu, u64 esr) */ static void inject_undef64(struct kvm_vcpu *vcpu) { - inject_sync64(vcpu, (ESR_ELx_EC_UNKNOWN << ESR_ELx_EC_SHIFT)); + inject_sync64(vcpu, (ESR_ELx_EC_UNKNOWN << ESR_ELx_EC_SHIFT) | ESR_ELx_IL); } static u64 read_id_reg(const struct kvm_vcpu *vcpu, -- 2.54.0.1136.gdb2ca164c4-goog