[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [PATCH v13 12/12] xen/arm: add cache coloring support for Xen image
- To: Carlo Nonato <carlo.nonato@xxxxxxxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Michal Orzel <michal.orzel@xxxxxxx>
- Date: Wed, 18 Dec 2024 11:23:21 +0100
- Arc-authentication-results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 165.204.84.17) smtp.rcpttodomain=minervasys.tech smtp.mailfrom=amd.com; dmarc=pass (p=quarantine sp=quarantine pct=100) action=none header.from=amd.com; dkim=none (message not signed); arc=none (0)
- Arc-message-signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=GIwXgD8LDZivLejsJkktFq+0L34VyBvvrz06ovUazmg=; b=jrtIyliumdEc+Jk6NOBFta0AUQJHQQp3mJ+zU7WIUZCfwvEVQBDXUTeRz5cIvmUsEXyBpDnAdiIeF038equrTiEj7Gl3ym1q/Jlchx/s+EgK1zJut3InTrZcZgFK3l1Oazo595LlUv+l4Tukia5hFYA8oZfs40YFPXEF5wwrLQcwwjuiKcWoWVvY8hBvSAg+cMCIE5IO+nlU1E8VPLAVgG5jFfqYLiwM5KYrigGWQ+2rizJKKXdsEIhKbb3f0PhDWbW4nhOWAK1cPvfUv7HUd19ypTV6S8/dYN/OmJtdUMTe1+kWIwLMlREvwlUbJVs6g82BCd1VO+pufT5BnjYnUg==
- Arc-seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=M8W7i7pGLAEav1Vz4AtQX01Km4qDmEwk2wLyKOIeGsMrJieJMbMS+IYoU8aQfKGIrlmMYyootOpm7WA/jTTePq9rA2a8upniHdEM7uSOceZlC1hwUWVK4+cm5JrlEQyDYol7hZhSLiMo9Zj3nnxMK7uysFAqRxeNuwPOoRPBWBsZZ7xAtZYJ0J1N57R0kJCyoJCbzwxJz9e1ZZGQxGiY6UoXG7wQUGozfV8nCQrIb0MPZj3CfDfS2nsByUt0opbn28dvWvZvUhG5v/4hEJyCwnKwfV9tl3mBk0MgEV6ynhG6juyLJ4BQWTdplbby5i4UsbrNxNClj5hpsJuDk3Wkyw==
- Cc: <andrea.bastoni@xxxxxxxxxxxxxxx>, <marco.solieri@xxxxxxxxxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Anthony PERARD <anthony.perard@xxxxxxxxxx>, Jan Beulich <jbeulich@xxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>
- Delivery-date: Wed, 18 Dec 2024 10:23:39 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 17/12/2024 18:06, Carlo Nonato wrote:
>
>
> Xen image is relocated to a new colored physical space. Some relocation
> functionalities must be brought back:
> - the virtual address of the new space is taken from 0c18fb76323b
> ("xen/arm: Remove unused BOOT_RELOC_VIRT_START").
> - relocate_xen() and get_xen_paddr() are taken from f60658c6ae47
> ("xen/arm: Stop relocating Xen").
>
> setup_pagetables() must be adapted for coloring and for relocation. Runtime
> page tables are used to map the colored space, but they are also linked in
> boot tables so that the new space is temporarily available for relocation.
> This implies that Xen protection must happen after the copy.
>
> Finally, since the alternative framework needs to remap the Xen text and
> inittext sections, this operation must be done in a coloring-aware way.
> The function xen_remap_colored() is introduced for that.
>
> Signed-off-by: Carlo Nonato <carlo.nonato@xxxxxxxxxxxxxxx>
> Signed-off-by: Marco Solieri <marco.solieri@xxxxxxxxxxxxxxx>
> Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx> # common
Reviewed-by: Michal Orzel <michal.orzel@xxxxxxx>
~Michal
|
