From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A669D1547F0; Thu, 12 Dec 2024 15:35:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734017720; cv=none; b=FF2TWxdGeFdH5WHTN53OSoNX6HRANCceeaL7bBzEVtrI/s+nJM9i39ibDj/WrJiOQYflq9n4iOOTmKw++cdEOWEG/WNrV6+UnMl/VCPN8wnS3Onc08uYb4lgqHC+FhV1sCjiYnNMlwnxagvYcCw+5/TXQbsfe1BZ+v+yE7s1rF4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734017720; c=relaxed/simple; bh=mWmetXH5/JDX+Q4Az2s6DsOXKsXM2gnTV1eu7rGIRlU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=KGBxZYUKbWOm+nhJ4KhtJNjASZs2qSsSNRzbqv+2UFdaw+9oFMc50VSLj9NxZFGoWXJBXqIx41kbvw+DDaf1rJRgM+1wAMoboPIgDg7ToIQ1x1RciGQ828P3UnwvrmewyXzrPgJaI627WD7Rk5lsl1wwa5hkATDDfVjSbIa+bAs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=CoCHjxzi; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="CoCHjxzi" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 19987C4CECE; Thu, 12 Dec 2024 15:35:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1734017720; bh=mWmetXH5/JDX+Q4Az2s6DsOXKsXM2gnTV1eu7rGIRlU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=CoCHjxziH7HBTxwbzGdg7/RGllWDyjDTzU8kaXCgEye1jIo38A6jxm+cRu2iNuPPT gmA9I5unmktCzOTv3T2h2QRyM65z04Nd9DquaK1B5R++6lcz1966z9ZWBihjaMqTWS juI4LAkm1MJm9PXI2TZbwV4Fy3ccCZcSJXrJnVKk= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Fuad Tabba , Oliver Upton , Marc Zyngier , Sasha Levin Subject: [PATCH 6.6 063/356] KVM: arm64: Change kvm_handle_mmio_return() return polarity Date: Thu, 12 Dec 2024 15:56:22 +0100 Message-ID: <20241212144247.121438665@linuxfoundation.org> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20241212144244.601729511@linuxfoundation.org> References: <20241212144244.601729511@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Fuad Tabba [ Upstream commit cc81b6dfc3bc82c3a2600eefbd3823bdb2190197 ] Most exit handlers return <= 0 to indicate that the host needs to handle the exit. Make kvm_handle_mmio_return() consistent with the exit handlers in handle_exit(). This makes the code easier to reason about, and makes it easier to add other handlers in future patches. No functional change intended. Signed-off-by: Fuad Tabba Acked-by: Oliver Upton Link: https://lore.kernel.org/r/20240423150538.2103045-15-tabba@google.com Signed-off-by: Marc Zyngier Stable-dep-of: e735a5da6442 ("KVM: arm64: Don't retire aborted MMIO instruction") Signed-off-by: Sasha Levin --- arch/arm64/kvm/arm.c | 2 +- arch/arm64/kvm/mmio.c | 4 ++-- 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c index 4742e6c5ea7a0..ffdc2c4d07ee8 100644 --- a/arch/arm64/kvm/arm.c +++ b/arch/arm64/kvm/arm.c @@ -900,7 +900,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu) if (run->exit_reason == KVM_EXIT_MMIO) { ret = kvm_handle_mmio_return(vcpu); - if (ret) + if (ret <= 0) return ret; } diff --git a/arch/arm64/kvm/mmio.c b/arch/arm64/kvm/mmio.c index 3dd38a151d2a6..886ef30e12196 100644 --- a/arch/arm64/kvm/mmio.c +++ b/arch/arm64/kvm/mmio.c @@ -86,7 +86,7 @@ int kvm_handle_mmio_return(struct kvm_vcpu *vcpu) /* Detect an already handled MMIO return */ if (unlikely(!vcpu->mmio_needed)) - return 0; + return 1; vcpu->mmio_needed = 0; @@ -117,7 +117,7 @@ int kvm_handle_mmio_return(struct kvm_vcpu *vcpu) */ kvm_incr_pc(vcpu); - return 0; + return 1; } int io_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa) -- 2.43.0