Hosts the 0x221E linux distro kernel. https://universe.0xinfinity.dev/distro/kernel/atom?h=linux-rolling-stable 2025-10-30T15:29:53Z 2025-10-30T15:29:53Z John Allen john.allen@amd.com 2025-09-24T20:08:51Z urn:sha1:9249bcdea0c6db4f450a9267aa6da5b4dd4153ca The boot_{rdmsr,wrmsr}() helpers are *just* the barebones MSR access functionality, without any tracing or exception handling glue as it is done in kernel proper. Move these helpers to asm/shared/msr.h and rename to raw_{rdmsr,wrmsr}() to indicate what they are. [ bp: Correct the reason why those helpers exist. I should've caught that in the original patch that added them: 176db622573f ("x86/boot: Introduce helpers for MSR reads/writes" but oh well... - fixup include path delimiters to <> ] Signed-off-by: John Allen <john.allen@amd.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Reviewed-by: Tom Lendacky <thomas.lendacky@amd.com> Link: https://patch.msgid.link/all/20250924200852.4452-2-john.allen@amd.com 2022-04-06T10:59:17Z Michael Roth michael.roth@amd.com 2022-02-09T18:09:59Z urn:sha1:176db622573f028f85221873ea4577e096785315 The current set of helpers used throughout the run-time kernel have dependencies on code/facilities outside of the boot kernel, so there are a number of call-sites throughout the boot kernel where inline assembly is used instead. More will be added with subsequent patches that add support for SEV-SNP, so take the opportunity to provide a basic set of helpers that can be used by the boot kernel to reduce reliance on inline assembly. Use boot_* prefix so that it's clear these are helpers specific to the boot kernel to avoid any confusion with the various other MSR read/write helpers. [ bp: Disambiguate parameter names and trim comment. ] Suggested-by: Borislav Petkov <bp@alien8.de> Signed-off-by: Michael Roth <michael.roth@amd.com> Signed-off-by: Borislav Petkov <bp@suse.de> Link: https://lore.kernel.org/r/20220307213356.2797205-6-brijesh.singh@amd.com