From: Ashish Kalra <ashish.kalra@xxxxxxx> The patchset adds bits and pieces to get kexec (and crashkernel) work on SNP guest. The series is based off of and tested against Kirill Shutemov's tree: https://github.com/intel/tdx.git guest-kexec ---- v7: - Rebased onto current tip/master; - Moved back to checking the md attribute instead of checking the efi_setup for detecting if running under kexec kernel as suggested in upstream review feedback. v6: - Updated and restructured the commit message for patch 1/3 to explain the issue in detail. - Updated inline comments in patch 1/3 to explain the issue in detail. - Moved back to checking efi_setup for detecting if running under kexec kernel. v5: - Removed sev_es_enabled() function and using sev_status directly to check for SEV-ES/SEV-SNP guest. - used --base option to generate patches to specify Kirill's TDX guest kexec patches as prerequisite patches to fix kernel test robot build errors. v4: - Rebased to current tip/master. - Reviewed-bys from Sathya. - Remove snp_kexec_unprep_rom_memory() as it is not needed any more as SEV-SNP code is not validating the ROM range in probe_roms() anymore. - Fix kernel test robot build error/warnings. v3: - Rebased; - moved Keep page tables that maps E820_TYPE_ACPI patch to Kirill's tdx guest kexec patch series. - checking the md attribute instead of checking the efi_setup for detecting if running under kexec kernel. - added new sev_es_enabled() function. - skip video memory access in decompressor for SEV-ES/SNP systems to prevent guest termination as boot stage2 #VC handler does not handle MMIO. v2: - address zeroing of unaccepted memory table mappings at all page table levels adding phys_pte_init(), phys_pud_init() and phys_p4d_init(). - include skip efi_arch_mem_reserve() in case of kexec as part of this patch set. - rename last_address_shd_kexec to a more appropriate kexec_last_address_to_make_private. - remove duplicate code shared with TDX and use common interfaces defined for SNP and TDX for kexec/kdump. - remove set_pte_enc() dependency on pg_level_to_pfn() and make the function simpler. - rename unshare_pte() to make_pte_private(). - clarify and make the comment for using kexec_last_address_to_make_private more understandable. - general cleanup. Ashish Kalra (3): efi/x86: Fix EFI memory map corruption with kexec x86/boot/compressed: Skip Video Memory access in Decompressor for SEV-ES/SNP. x86/snp: Convert shared memory back to private on kexec arch/x86/boot/compressed/misc.c | 6 +- arch/x86/include/asm/sev.h | 4 + arch/x86/kernel/sev.c | 162 ++++++++++++++++++++++++++++++++ arch/x86/mm/mem_encrypt_amd.c | 3 + arch/x86/platform/efi/quirks.c | 30 +++++- 5 files changed, 200 insertions(+), 5 deletions(-) base-commit: f8441cd55885e43eb0d4e8eedc6c5ab15d2dabf1 prerequisite-patch-id: a911f230c2524bd791c47f62f17f0a93cbf726b6 prerequisite-patch-id: bfe2fa046349978ac1825275eb205acecfbc22f3 prerequisite-patch-id: 5e60d292457c7cd98fd3e45c23127e9463b56a69 prerequisite-patch-id: 1f97d0a2edb7509dd58276f628d1a4bda62c154c prerequisite-patch-id: 6e07f4d4ac95ad1d2c7750ebd3e87483fb9fd48f prerequisite-patch-id: 24ec385d6a89cf2c8553c6d29515cc513643a68a prerequisite-patch-id: 6a8bda2b3cf9bfab8177acdcfc8dd0408ed129fa prerequisite-patch-id: 99382c42348b9a076ba930eca0dfc9d000ec951d prerequisite-patch-id: 469a0a3c78b0eca82527cd85e2205fb8fb89d645 prerequisite-patch-id: 2be870cdf58bdc6a10ca3c18bf874e5c6cfb7e42 prerequisite-patch-id: 7fc62697fb6bdade0bab66ba2b45a19759008f9e prerequisite-patch-id: 95356474298029468750a9c1bc2224fb09a86eed prerequisite-patch-id: d4966ae63e86d24b0bf578da4dae871cd9002b12 prerequisite-patch-id: fccde6f1fa385b5af0195f81fcb95acd71822428 prerequisite-patch-id: 16048ee15e392b0b9217b8923939b0059311abd2 prerequisite-patch-id: 5c9ae9aa294f72f63ae2c3551507dfbd92525803 prerequisite-patch-id: 758bdb686290c018cbd5b7d005354019f9d15248 prerequisite-patch-id: c85fd0bb6d183a40da73720eaa607481b1d51daf prerequisite-patch-id: 60760e0c98ab7ccd2ca22ae3e9f20ff5a94c6e91 -- 2.34.1 _______________________________________________ kexec mailing list kexec@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/kexec
