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from 855684c7d938 Merge tag 'x86_tdx_for_6.9' of git://git.kernel.org/pub/sc [...] new e95df4ec0c0c x86/mmio: Disable KVM mitigation when X86_FEATURE_CLEAR_CP [...] new 4e42765d1be0 Documentation/hw-vuln: Add documentation for RFDS new 8076fcde016c x86/rfds: Mitigate Register File Data Sampling (RFDS) new 2a0180129d72 KVM/x86: Export RFDS_NO and RFDS_CLEAR to guests new 0e33cf955f07 Merge tag 'rfds-for-linus-2024-03-11' of git://git.kernel. [...] new 532a0c57d7ff Revert "x86/bugs: Use fixed addressing for VERW operand" new e66c58f74351 Merge tag 'x86-apic-2024-03-12' of git://git.kernel.org/pu [...] new 156757062418 x86/startup_64: Drop long return to initial_code pointer new 9ba8ec8ee67a x86/boot: Add error_putdec() helper new ac456ca0af4f x86/boot: Add a message about ignored early NMIs new 43b1d3e68ee7 kexec: Allocate kernel above bzImage's pref_address new c2cfc23f7967 x86/trampoline: Bypass compat mode in trampoline_start64() [...] new 29cd85557d8b Merge tag 'v6.8-rc6' into x86/boot, to pick up fixes new 2e5fc4786b7a Merge branch 'x86/sev' into x86/boot, to resolve conflicts [...] new 5da793671957 x86/boot/64: Simplify global variable accesses in GDT/IDT [...] new d9ec1158056b x86/boot/64: Use RIP_REL_REF() to assign 'phys_base' new b0fe5fb6095b x86/boot/64: Use RIP_REL_REF() to access early_dynamic_pgts[] new 4f8b6cf25f5c x86/boot/64: Use RIP_REL_REF() to access '__supported_pte_mask' new eb54c2ae4a48 x86/boot/64: Use RIP_REL_REF() to access early page tables new 533568e06b15 x86/boot/64: Use RIP_REL_REF() to access early_top_pgt[] new 11e36b0f7c21 x86/boot/64: Load the final kernel GDT during early boot d [...] new 891f8890a4a3 efi/x86: Set the PE/COFF header's NX compat flag unconditionally new 721f791ce1cd x86/boot: Use 32-bit XOR to clear registers new dada8587068c x86/startup_64: Simplify CR4 handling in startup code new 63bed9660420 x86/startup_64: Defer assignment of 5-level paging global [...] new d6a41f184dce x86/startup_64: Simplify calculation of initial page table [...] new 828263957611 x86/startup_64: Simplify virtual switch on primary boot new 7205f06e8474 efi/libstub: Add generic support for parsing mem_encrypt= new cd0d9d92c8bb x86/boot: Move mem_encrypt= parsing to the decompressor new 48204aba801f x86/sme: Move early SME kernel encryption handling into .h [...] new 428080c9b19b x86/sev: Move early startup code into .head.text section new 2e2bc42c8381 Merge branch 'linus' into x86/boot, to resolve conflict new b29f377119f6 Merge tag 'x86-boot-2024-03-12' of git://git.kernel.org/pu [...]

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Summary of changes: Documentation/ABI/testing/sysfs-devices-system-cpu | 1 + Documentation/admin-guide/hw-vuln/index.rst | 1 + .../admin-guide/hw-vuln/reg-file-data-sampling.rst | 104 ++++++++++++ Documentation/admin-guide/kernel-parameters.txt | 21 +++ Documentation/arch/x86/boot.rst | 3 +- arch/x86/Kconfig | 21 ++- arch/x86/boot/compressed/ident_map_64.c | 2 +- arch/x86/boot/compressed/misc.c | 55 +++++-- arch/x86/boot/compressed/misc.h | 3 + arch/x86/boot/compressed/sev.c | 3 + arch/x86/boot/header.S | 4 - arch/x86/include/asm/cpufeatures.h | 1 + arch/x86/include/asm/desc.h | 1 + arch/x86/include/asm/mem_encrypt.h | 8 +- arch/x86/include/asm/msr-index.h | 8 + arch/x86/include/asm/nospec-branch.h | 2 +- arch/x86/include/asm/pgtable_64_types.h | 2 +- arch/x86/include/asm/setup.h | 2 +- arch/x86/include/asm/sev.h | 10 +- arch/x86/include/uapi/asm/bootparam.h | 1 + arch/x86/kernel/cpu/bugs.c | 92 ++++++++++- arch/x86/kernel/cpu/common.c | 38 ++++- arch/x86/kernel/head64.c | 179 ++++++++------------- arch/x86/kernel/head_64.S | 144 ++++++----------- arch/x86/kernel/kexec-bzimage64.c | 5 +- arch/x86/kernel/sev-shared.c | 23 ++- arch/x86/kernel/sev.c | 14 +- arch/x86/kernel/sev_verify_cbit.S | 2 +- arch/x86/kvm/x86.c | 5 +- arch/x86/lib/Makefile | 13 -- arch/x86/mm/mem_encrypt_identity.c | 74 +++------ arch/x86/realmode/rm/trampoline_64.S | 33 +++- drivers/base/cpu.c | 3 + drivers/firmware/efi/libstub/efi-stub-helper.c | 8 + drivers/firmware/efi/libstub/efistub.h | 2 +- drivers/firmware/efi/libstub/x86-stub.c | 3 + include/linux/cpu.h | 2 + 37 files changed, 552 insertions(+), 341 deletions(-) create mode 100644 Documentation/admin-guide/hw-vuln/reg-file-data-sampling.rst