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[37.24.206.209]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-a89891db42fsm767943466b.184.2024.09.04.01.03.03 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 04 Sep 2024 01:03:03 -0700 (PDT) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 1cd4f903-6a94-11ef-99a1-01e77a169b0f DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=google; t=1725436984; x=1726041784; darn=lists.xenproject.org; h=content-transfer-encoding:in-reply-to:autocrypt:content-language :references:cc:to:from:subject:user-agent:mime-version:date :message-id:from:to:cc:subject:date:message-id:reply-to; bh=4QuLAkOQvFGPRbyFTe0uWisoxMW1Q1XbefCobjkWkUc=; b=N3YEb2J0uQY1EcjnPetTP9PvT6UICMk38lcbp4j7csisL8LofiWAaRvfRrUnR+Ahcz Dk2a50p10wj6voohrHhfi+XMka5QaMT18GzZdRanSFgfSlkqwNohtAypRVR7Kp4r0MMF pkhra2ZNYIXWeNiXcc7bsyHzRRbuIT8myQWcg0LL2yKWNnZU15Hg2SQ3diQM+1rafoLW tdbafrI36jkxSQ1WugsA242YOrf6gfkyxPcRZz9gm6LXMsYm3NGfQdNwRz0Sin8Hb5BG /krYgqmBdcacq+SX3vg+9YhjDeaZJBDcXFi2eNRuTsyNm1kMZN8mBdMbrWXG0U9hrm61 9QZg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1725436984; x=1726041784; h=content-transfer-encoding:in-reply-to:autocrypt:content-language :references:cc:to:from:subject:user-agent:mime-version:date :message-id:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=4QuLAkOQvFGPRbyFTe0uWisoxMW1Q1XbefCobjkWkUc=; b=I/FAwV/IpfCs75ci7pb4bma1MI6LgVuEvXbKOHsybcv6qmv+2MSgSsTDHLn/qDQidU s6eQP7ONt7ca96po9IeRdOnOR//5RTm+WqICIKpEBxRFKv1FJXpC2OTUgomqmpcoMRR3 coyoXPk4kW8A1ATmSD5RnNtOhMmwekxZ9idkzh1nml5cg4LhTUXV53rSHnowD2NIP6uK 6L4pKPQQcAj33Q0+CicCLAB3i6WVhiyreftJARuQgAipuHZ3ncE2QrFgzzohOSjJQDmg wzrdM4Fr6ZjgOFhbsnhFxWs118YZwygJRba/B1DW3h7M1Imf6rW1szO6MMe90JwYNs/S RtYw== X-Forwarded-Encrypted: i=1; AJvYcCXJaALaM71imHJIXhjtW5NmMWGyB/Yr/M/ww0zXFLrL6ToOCf8jbL3K9pLfeAFsf6veKLN5DzUDEz8=@lists.xenproject.org X-Gm-Message-State: AOJu0YyhYXZNmxolblXZi3L0lYewzwLwU/tULFg1Gh3F3w3yujdBD9Xh z7q3YVbJAyqhhwsM+6Dn+3OIJ9W/J4Z73c9UHPzN0C/b1a+6UEYkfoJ06LQlTw== X-Google-Smtp-Source: AGHT+IHKcFQuq5fPyV9e64yOoB8fpb+cPVk9uXa9O8Nr1nzPa61BBLz1M4rY9ubRcvrHJ1EhgdEKtg== X-Received: by 2002:a05:6512:118a:b0:52c:e133:7b2e with SMTP id 2adb3069b0e04-53546b4b08cmr13151976e87.35.1725436983701; Wed, 04 Sep 2024 01:03:03 -0700 (PDT) Message-ID: Date: Wed, 4 Sep 2024 10:03:02 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Ping: [PATCH v3] SUPPORT.md: split XSM from Flask From: Jan Beulich To: Andrew Cooper , Julien Grall , Stefano Stabellini Cc: Daniel Smith , "xen-devel@lists.xenproject.org" References: Content-Language: en-US Autocrypt: addr=jbeulich@suse.com; keydata= xsDiBFk3nEQRBADAEaSw6zC/EJkiwGPXbWtPxl2xCdSoeepS07jW8UgcHNurfHvUzogEq5xk hu507c3BarVjyWCJOylMNR98Yd8VqD9UfmX0Hb8/BrA+Hl6/DB/eqGptrf4BSRwcZQM32aZK 7Pj2XbGWIUrZrd70x1eAP9QE3P79Y2oLrsCgbZJfEwCgvz9JjGmQqQkRiTVzlZVCJYcyGGsD /0tbFCzD2h20ahe8rC1gbb3K3qk+LpBtvjBu1RY9drYk0NymiGbJWZgab6t1jM7sk2vuf0Py O9Hf9XBmK0uE9IgMaiCpc32XV9oASz6UJebwkX+zF2jG5I1BfnO9g7KlotcA/v5ClMjgo6Gl MDY4HxoSRu3i1cqqSDtVlt+AOVBJBACrZcnHAUSuCXBPy0jOlBhxPqRWv6ND4c9PH1xjQ3NP nxJuMBS8rnNg22uyfAgmBKNLpLgAGVRMZGaGoJObGf72s6TeIqKJo/LtggAS9qAUiuKVnygo 3wjfkS9A3DRO+SpU7JqWdsveeIQyeyEJ/8PTowmSQLakF+3fote9ybzd880fSmFuIEJldWxp Y2ggPGpiZXVsaWNoQHN1c2UuY29tPsJgBBMRAgAgBQJZN5xEAhsDBgsJCAcDAgQVAggDBBYC AwECHgECF4AACgkQoDSui/t3IH4J+wCfQ5jHdEjCRHj23O/5ttg9r9OIruwAn3103WUITZee e7Sbg12UgcQ5lv7SzsFNBFk3nEQQCACCuTjCjFOUdi5Nm244F+78kLghRcin/awv+IrTcIWF hUpSs1Y91iQQ7KItirz5uwCPlwejSJDQJLIS+QtJHaXDXeV6NI0Uef1hP20+y8qydDiVkv6l IreXjTb7DvksRgJNvCkWtYnlS3mYvQ9NzS9PhyALWbXnH6sIJd2O9lKS1Mrfq+y0IXCP10eS FFGg+Av3IQeFatkJAyju0PPthyTqxSI4lZYuJVPknzgaeuJv/2NccrPvmeDg6Coe7ZIeQ8Yj t0ARxu2xytAkkLCel1Lz1WLmwLstV30g80nkgZf/wr+/BXJW/oIvRlonUkxv+IbBM3dX2OV8 AmRv1ySWPTP7AAMFB/9PQK/VtlNUJvg8GXj9ootzrteGfVZVVT4XBJkfwBcpC/XcPzldjv+3 HYudvpdNK3lLujXeA5fLOH+Z/G9WBc5pFVSMocI71I8bT8lIAzreg0WvkWg5V2WZsUMlnDL9 mpwIGFhlbM3gfDMs7MPMu8YQRFVdUvtSpaAs8OFfGQ0ia3LGZcjA6Ik2+xcqscEJzNH+qh8V m5jjp28yZgaqTaRbg3M/+MTbMpicpZuqF4rnB0AQD12/3BNWDR6bmh+EkYSMcEIpQmBM51qM EKYTQGybRCjpnKHGOxG0rfFY1085mBDZCH5Kx0cl0HVJuQKC+dV2ZY5AqjcKwAxpE75MLFkr wkkEGBECAAkFAlk3nEQCGwwACgkQoDSui/t3IH7nnwCfcJWUDUFKdCsBH/E5d+0ZnMQi+G0A nAuWpQkjM1ASeQwSHEeAWPgskBQL In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 14.08.2024 09:44, Jan Beulich wrote: > XSM is a generic framework, which in particular is also used by SILO. > With this it can't really be experimental: Arm mandates SILO for having > a security supported configuration. > > Signed-off-by: Jan Beulich > --- > v3: Add explanations. Another terminology adjustment. > v2: Terminology adjustments. Stronger description. Are yet further adjustments needed? Jan > --- a/SUPPORT.md > +++ b/SUPPORT.md > @@ -769,13 +769,21 @@ Compile time disabled for ARM by default > > Status, x86: Supported, not security supported > > -### XSM & FLASK > +### XSM (Xen Security Module) Framework > + > +XSM is a security policy framework. The dummy implementation is covered by this > +statement, and implements a policy whereby dom0 is all powerful. See below for > +alternative modules (FLASK, SILO). > + > + Status: Supported > + > +### FLASK XSM Module > > Status: Experimental > > Compile time disabled by default. > > -Also note that using XSM > +Also note that using FLASK > to delegate various domain control hypercalls > to particular other domains, rather than only permitting use by dom0, > is also specifically excluded from security support for many hypercalls. > @@ -788,6 +796,13 @@ Please see XSA-77 for more details. > The default policy includes FLASK labels and roles for a "typical" Xen-based system > with dom0, driver domains, stub domains, domUs, and so on. > > +### SILO XSM Module > + > +SILO implements a policy whereby DomU-s can only communicate with Dom0, yet not > +with each other. > + > + Status: Supported > + > ## Virtual Hardware, Hypervisor > > ### x86/Nested PV