From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wm1-f73.google.com (mail-wm1-f73.google.com [209.85.128.73]) (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 4C02B358387 for ; Sun, 14 Jun 2026 16:33:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.73 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781454830; cv=none; b=Eb5EHctxCKVaef6VbY8Tnc8AAHIuLF9Fl+xV7+UyAMUAEF1OQOWmocdJTU4TbQhqKBf4wb/CUYe+yT0hzIdEuDK/kyhDs4MQlAbIuHEfi6R3YRga0IWuijoivVjLZ4/tZQ2uftsbkR9bamugRDCta+A+j/gTudAF4djEvaOReRg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781454830; c=relaxed/simple; bh=6fN8ZpRV3F+mtkNhz/8qmQIMh+9OjyhawKu2ZpLAl6A=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=t91/HAIW8WDup+9rlJY3ttdKF6S/bdpx79QamLETL6ndT6ScQI+HtZPOdt/X92uOboiuLZkYtgq+nMNhx/ESdCYSx65qaLgMzLL21tVul0KnZZ3Igx/SBj+lldyW7KYu5X5mk5jxjKeCo2lp5kaRgUYapCABMoVp12qSQTOjB7g= 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=FK+Gvy5J; arc=none smtp.client-ip=209.85.128.73 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="FK+Gvy5J" Received: by mail-wm1-f73.google.com with SMTP id 5b1f17b1804b1-490ae016853so16562925e9.2 for ; Sun, 14 Jun 2026 09:33:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1781454826; x=1782059626; 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=tv4trLugC2C4NI3RAbn0dCrrthQRiHhpJKIFLbS3QSY=; b=FK+Gvy5JxFLjhZ6Up/ZD2T/sEx2oeeh4j3gSr4207ZQyUNdyC16rjkQZ02y5DpotE+ 1nODvNj1WVL341je5i0DbOfU5JwmdXIXZ9B4Clul/KqI0HHyy4GzTLRgtEwKgciR1S6A r3sl3259VJypTNl7EQ8uXLTTjzjzl/32hhOzvnAeUoAVOvITd6iWmtNxnRpqvzi7wVOV jmngg74H3LgJBGa898GIowU2kmbmmwh8XRt+PxRISQgUR4pTDEagvSdHzDqbOkrrxqCW vRLkdQDj63KhQvEgoM1mFAQQPudxV+Z3hY0tm3/P4DOGYyUk6xq/iS+KjseRtrSvK/St dbXw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1781454826; x=1782059626; 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=tv4trLugC2C4NI3RAbn0dCrrthQRiHhpJKIFLbS3QSY=; b=GrwuovGALZkQFDbnWAGp0CMfH8NPMIGLtr4NJ7itj/oTqv78D0yOSlP71+fWIRWv65 kqSZ/ADYhJGNu4BuiPXhjbMNLrkHrjLzaFQhhCqQI95Zd/puvocIbofQ12G1QBhU1r5K xmdR4wwRkYf1fL6O/i2an/qV+tkIqFwXk4iR37pWbfp8vaGYT6Qw0Gil3XH8h0A9m2PJ TGNnDzVYNis47+o1sKevVHpi3JBeU5g5FAEyzESrzTRwaprBRtkObFEIVyrGxvUgZRrE azL+G3l4bVwHG0zMJqwHsIRZBv2rOoAyevU9sFMJAtP/hoNU/p9wAy4/jnWvWWha8OaM JQXA== X-Forwarded-Encrypted: i=1; AFNElJ/IYK0TfjxK9YO1NISJ9eqoGOjDHTKuRUIx98pkqCiUY2t4wYlazGROu0jHHFdCmVmlcPzcguQout99Vmw=@vger.kernel.org X-Gm-Message-State: AOJu0YxHn/5e2D4dqUHUK9ONVe23tjzTuoM73f01n+p3sYAMdFkkTulX /CdMzQJaf39gIGs9Enakj1q1LoK5X1Wi+XhtWqMNfRkQWBvVXMyM6CdmTY2qlGpUST/9d1EkfES n8A== X-Received: from wmjq15.prod.google.com ([2002:a7b:ce8f:0:b0:490:7e29:9cea]) (user=tabba job=prod-delivery.src-stubby-dispatcher) by 2002:a05:600d:8494:10b0:490:c7dd:de3e with SMTP id 5b1f17b1804b1-490ec521187mr96160565e9.31.1781454825642; Sun, 14 Jun 2026 09:33:45 -0700 (PDT) Date: Sun, 14 Jun 2026 17:33:36 +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: <20260614163336.3490925-8-tabba@google.com> Subject: [PATCH 7/7] KVM: arm64: Set IL in fake ESR for pKVM memory sharing exit 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" __pkvm_memshare_page_req() constructs a fake DABT ESR_EL2 to exit to the host without setting IL. The ESR has ISV=0, so IL must be 1 per the architecture. The host does not read IL on this path, but the constructed syndrome should still be architecturally valid. Set ESR_ELx_IL. Fixes: 03313efed5e2 ("KVM: arm64: Implement the MEM_SHARE hypercall for protected VMs") Signed-off-by: Fuad Tabba --- arch/arm64/kvm/hyp/nvhe/pkvm.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/arm64/kvm/hyp/nvhe/pkvm.c b/arch/arm64/kvm/hyp/nvhe/pkvm.c index eb1c10120f9f..c982a3a04c37 100644 --- a/arch/arm64/kvm/hyp/nvhe/pkvm.c +++ b/arch/arm64/kvm/hyp/nvhe/pkvm.c @@ -1054,7 +1054,8 @@ static u64 __pkvm_memshare_page_req(struct kvm_vcpu *vcpu, u64 ipa) /* Fake up a data abort (level 3 translation fault on write) */ vcpu->arch.fault.esr_el2 = (ESR_ELx_EC_DABT_LOW << ESR_ELx_EC_SHIFT) | - ESR_ELx_WNR | ESR_ELx_FSC_FAULT | + ESR_ELx_IL | ESR_ELx_WNR | + ESR_ELx_FSC_FAULT | FIELD_PREP(ESR_ELx_FSC_LEVEL, 3); /* Shuffle the IPA around into the HPFAR */ -- 2.54.0.1136.gdb2ca164c4-goog