• Linus Torvalds's avatar
    Merge tag 'x86_sev_for_v6.4_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · bc1bb2a4
    Linus Torvalds authored
    Pull x86 SEV updates from Borislav Petkov:
    
     - Add the necessary glue so that the kernel can run as a confidential
       SEV-SNP vTOM guest on Hyper-V. A vTOM guest basically splits the
       address space in two parts: encrypted and unencrypted. The use case
       being running unmodified guests on the Hyper-V confidential computing
       hypervisor
    
     - Double-buffer messages between the guest and the hardware PSP device
       so that no partial buffers are copied back'n'forth and thus potential
       message integrity and leak attacks are possible
    
     - Name the return value the sev-guest driver returns when the hw PSP
       device hasn't been called, explicitly
    
     - Cleanups
    
    * tag 'x86_sev_for_v6.4_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
      x86/hyperv: Change vTOM handling to use standard coco mechanisms
      init: Call mem_encrypt_init() after Hyper-V hypercall init is done
      x86/mm: Handle decryption/re-encryption of bss_decrypted consistently
      Drivers: hv: Explicitly request decrypted in vmap_pfn() calls
      x86/hyperv: Reorder code to facilitate future work
      x86/ioremap: Add hypervisor callback for private MMIO mapping in coco VM
      x86/sev: Change snp_guest_issue_request()'s fw_err argument
      virt/coco/sev-guest: Double-buffer messages
      crypto: ccp: Get rid of __sev_platform_init_locked()'s local function pointer
      crypto: ccp - Name -1 return value as SEV_RET_NO_FW_CALL
    bc1bb2a4
set_memory.c 61.1 KB