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table of sorts which contains per-node descriptors of each node-local 4K page, denoting its ownership (hypervisor, guest, etc) in the realm of confidential computing. Add support for such a table in order to improve referential locality when accessing or modifying RMP table entries - Add support for reading the TSC in SNP guests by removing any interference or influence the hypervisor might have, with the goal of making a confidential guest even more independent from the hypervisor -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmeOYLsACgkQEsHwGGHe VUrywg//WBuywe3+TNPwF0Iw8becqtD7lKMftmUoqpcf20JhiHSCexb+3/r7U2Kb WL1/T5cxX1rA45HzkwovUljlvin8B9bdpY40dUqrKFPMnWLfs4ru0HPA6UxPBsAq r/8XrXuRrI22MLbrAeQ2xSt8dqw3DpbJyUcyr0qOb6OsbtAy05uElYCzMSyzT06F QsTmenosuJqSo1gIGTxfU4nKyd1o8EJ5b1ThK11hvZaIOffgLjEU6g39cG9AeF4X TOkh9CdIlQc3ot14rJeWMy15YEW+xBdXdMEv0ZPOSZiKzTHA7wwdl0VmPm1EK57f BQkZikuoJezJA0r5wSwVgslTaYO0GTXNewwL5jxK1mqRgoK06IgC6xAkX8N7NTYL K6DX+tfaKjSJGY1z9TYOzs+wGV4MBAXmbLwnuhcPumkTYXPFbRFZqx6ec2BLIU+Y bZfwhlr3q+bfFeBYMzyWPHJ87JinOjwu4Ah0uLVmkoRtgb0S3pIdlyRYZAcEl6fn Tgfu0/RNLGGsH/a3BF7AQdt+hOv1ms5hEMYXg++30uC59LR8XbuKnLdUPRi0nVeD e9xyxFybu5ySesnnXabtaO9bSUF+8HV4nkclKglFvuHpLMQ5GlPxTnBj1V1podYR l12G2htXKsSV5JJK4x+WfYBe6Nn3tbcpgZD8M8g0lso8kejqMjs= =hh1m -----END PGP SIGNATURE----- Merge tag 'x86_sev_for_v6.14_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 SEV updates from Borislav Petkov: - A segmented Reverse Map table (RMP) is a across-nodes distributed table of sorts which contains per-node descriptors of each node-local 4K page, denoting its ownership (hypervisor, guest, etc) in the realm of confidential computing. Add support for such a table in order to improve referential locality when accessing or modifying RMP table entries - Add support for reading the TSC in SNP guests by removing any interference or influence the hypervisor might have, with the goal of making a confidential guest even more independent from the hypervisor * tag 'x86_sev_for_v6.14_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/sev: Add the Secure TSC feature for SNP guests x86/tsc: Init the TSC for Secure TSC guests x86/sev: Mark the TSC in a secure TSC guest as reliable x86/sev: Prevent RDTSC/RDTSCP interception for Secure TSC enabled guests x86/sev: Prevent GUEST_TSC_FREQ MSR interception for Secure TSC enabled guests x86/sev: Change TSC MSR behavior for Secure TSC enabled guests x86/sev: Add Secure TSC support for SNP guests x86/sev: Relocate SNP guest messaging routines to common code x86/sev: Carve out and export SNP guest messaging init routines virt: sev-guest: Replace GFP_KERNEL_ACCOUNT with GFP_KERNEL virt: sev-guest: Remove is_vmpck_empty() helper x86/sev/docs: Document the SNP Reverse Map Table (RMP) x86/sev: Add full support for a segmented RMP table x86/sev: Treat the contiguous RMP table as a single RMP segment x86/sev: Map only the RMP table entries instead of the full RMP range x86/sev: Move the SNP probe routine out of the way x86/sev: Require the RMPREAD instruction after Zen4 x86/sev: Add support for the RMPREAD instruction x86/sev: Prepare for using the RMPREAD instruction to access the RMP
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.