In general, seL4 provides low-level mechanisms, not high-level abstractions.
The vm model and process model are high-level abstractions of an OS personality on seL4, and as such, the OS personality is expected to keep the information required to implement those abstractions. So I would expect the OS personality running on seL4 to keep track of the frame caps used to create VM objects/address-spaces, which threads are in what processes, etc.. There are some libraries that ease building OS personalities, which are the ones you are using. Those libraries walk a thin line between helpful libraries to aid the construction of OS personalities, and largely defining the OS personality. We make no claims as to the line striking the right balance, this is evolving over time, with tension pulling the line in either direction. So if my understanding of the current support libraries is correct, what you’re after is part of the book-keeping you should be managing when creating your OS personality on seL4 – it is not provide by the libraries nor seL4. - Kevin From: Devel [mailto:[email protected]] On Behalf Of Yuxin Ren Sent: Friday, 17 October 2014 5:21 AM To: [email protected] Subject: [seL4] How to get a capability of a virtual address Hi All, In sel4, how can a process/thread get the capability of its virtual address? I know there is function vspace_get_cap(vspace_t *vspace, void *vaddr) But how can I know the current vspace the process/thread is in? Thank you very much. Yuxin ________________________________ The information in this e-mail may be confidential and subject to legal professional privilege and/or copyright. National ICT Australia Limited accepts no liability for any damage caused by this email or its attachments.
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