# git rev-parse -q --verify bc1bb2a49bae915107fd58705edb1e32db92c635^{commit}
# git fetch -q -n -f git://fs.ozlabs.ibm.com/kernel/linus master
# git rev-parse -q --verify bc1bb2a49bae915107fd58705edb1e32db92c635^{commit}
bc1bb2a49bae915107fd58705edb1e32db92c635
# git checkout -q -f -B kisskb bc1bb2a49bae915107fd58705edb1e32db92c635
# git clean -qxdf
# < git log -1
# commit bc1bb2a49bae915107fd58705edb1e32db92c635
# Merge: c42b59bfaa00 812b0597fb40
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Tue Apr 25 10:48:08 2023 -0700
# 
#     Merge tag 'x86_sev_for_v6.4_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
#     
#     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
# < /opt/cross/kisskb/korg/gcc-11.3.0-nolibc/sparc64-linux/bin/sparc64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-11.3.0-nolibc/sparc64-linux/bin/sparc64-linux-ld --version
# < git log --format=%s --max-count=1 bc1bb2a49bae915107fd58705edb1e32db92c635
# < make -s -j 120 ARCH=sparc64 O=/kisskb/build/linus_sparc64-defconfig_sparc64-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.3.0-nolibc/sparc64-linux/bin/sparc64-linux-  defconfig
# < make -s -j 120 ARCH=sparc64 O=/kisskb/build/linus_sparc64-defconfig_sparc64-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.3.0-nolibc/sparc64-linux/bin/sparc64-linux-  help
# make -s -j 120 ARCH=sparc64 O=/kisskb/build/linus_sparc64-defconfig_sparc64-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.3.0-nolibc/sparc64-linux/bin/sparc64-linux-  olddefconfig
# make -s -j 120 ARCH=sparc64 O=/kisskb/build/linus_sparc64-defconfig_sparc64-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.3.0-nolibc/sparc64-linux/bin/sparc64-linux-  
<stdin>:1519:2: warning: #warning syscall clone3 not implemented [-Wcpp]
WARNING: modpost: EXPORT symbol "_mcount" [vmlinux] version generation failed, symbol will not be versioned.
Is "_mcount" prototyped in <asm/asm-prototypes.h>?
  kernel: arch/sparc/boot/image is ready
  kernel: arch/sparc/boot/zImage is ready
Completed OK
# rm -rf /kisskb/build/linus_sparc64-defconfig_sparc64-gcc11
# Build took: 0:01:14.158504