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authorLinus Torvalds <torvalds@linux-foundation.org>2023-06-27 01:32:39 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2023-06-27 01:32:39 +0300
commit2c96136a3f8dad6bfe35b003fb8b312f13a107e8 (patch)
treedcc5713059bf56cf70dfc4ec0d53ef7cbc88bcd1 /mm/migrate.c
parent3e5822e0f99e429fa8b03c956dad890179b5b3b1 (diff)
parent84b9b44b99780d35fe72ac63c4724f158771e898 (diff)
downloadlinux-2c96136a3f8dad6bfe35b003fb8b312f13a107e8.tar.xz
Merge tag 'x86_cc_for_v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 confidential computing update from Borislav Petkov: - Add support for unaccepted memory as specified in the UEFI spec v2.9. The gist of it all is that Intel TDX and AMD SEV-SNP confidential computing guests define the notion of accepting memory before using it and thus preventing a whole set of attacks against such guests like memory replay and the like. There are a couple of strategies of how memory should be accepted - the current implementation does an on-demand way of accepting. * tag 'x86_cc_for_v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: virt: sevguest: Add CONFIG_CRYPTO dependency x86/efi: Safely enable unaccepted memory in UEFI x86/sev: Add SNP-specific unaccepted memory support x86/sev: Use large PSC requests if applicable x86/sev: Allow for use of the early boot GHCB for PSC requests x86/sev: Put PSC struct on the stack in prep for unaccepted memory support x86/sev: Fix calculation of end address based on number of pages x86/tdx: Add unaccepted memory support x86/tdx: Refactor try_accept_one() x86/tdx: Make _tdx_hypercall() and __tdx_module_call() available in boot stub efi/unaccepted: Avoid load_unaligned_zeropad() stepping into unaccepted memory efi: Add unaccepted memory support x86/boot/compressed: Handle unaccepted memory efi/libstub: Implement support for unaccepted memory efi/x86: Get full memory map in allocate_e820() mm: Add support for unaccepted memory
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