arm64 fixes for 6.13-rc2

Hi Linus,

Please pull the arm64 fixes below. Nothing major, some left-overs from the recent merging window (MTE, coco) and some newly found issues like the ptrace() ones. More details in the tag. Thanks.

The following changes since commit 40384c840ea1944d7c5a392e8975ed088ecf0b37:

Linux 6.13-rc1 (2024-12-01 14:28:56 -0800)

are available in the Git repository at:

git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux tags/arm64-fixes

for you to fetch changes up to d60624f72d15862a96965b945f6ddfee9a1359e7:

arm64: ptrace: fix partial SETREGSET for NT_ARM_GCS (2024-12-05 18:05:51 +0000)

----------------------------------------------------------------
arm64 fixes for 6.13-rc2:

- MTE/hugetlbfs:

- Set VM_MTE_ALLOWED in the arch code and remove it from the core code for hugetlbfs mappings

- Fix copy_highpage() warning when the source is a huge page but not MTE tagged, taking the wrong small page path

- drivers/virt/coco:

- Add the pKVM and Arm CCA drivers under the arm64 maintainership

- Fix the pkvm driver to fall back to ioremap() (and warn) if the MMIO_GUARD hypercall fails

- Keep the Arm CCA driver default 'n' rather than 'm'

- A series of fixes for the arm64 ptrace() implementation, potentially leading to the kernel consuming uninitialised stack variables when PTRACE_SETREGSET is invoked with a length of 0

- Fix zone_dma_limit calculation when RAM starts below 4GB and ZONE_DMA is capped to this limit

- Fix early boot warning with CONFIG_DEBUG_VIRTUAL=y triggered by a call to page_to_phys() (from patch_map()) which checks pfn_valid() before vmemmap has been set up

- Do not clobber bits 15:8 of the ASID used for TTBR1_EL1 and TLBI ops when the kernel assumes 8-bit ASIDs but running under a hypervisor on a system that implements 16-bit ASIDs (found running Linux under Parallels on Apple M4)

- ACPI/IORT: Add PMCG platform information for HiSilicon HIP09A as it is using the same SMMU PMCG as HIP09 and suffers from the same errata

- Add GCS to cpucap_is_possible(), missed in the recent merge

----------------------------------------------------------------
Catalin Marinas (2):
arm64: Ensure bits ASID[15:8] are masked out when the kernel uses 8-bit ASIDs
arm64: mte: Fix copy_highpage() warning on hugetlb folios

Mark Rutland (5):
arm64: patching: avoid early page_to_phys()
arm64: ptrace: fix partial SETREGSET for NT_ARM_TAGGED_ADDR_CTRL
arm64: ptrace: fix partial SETREGSET for NT_ARM_FPMR
arm64: ptrace: fix partial SETREGSET for NT_ARM_POE
arm64: ptrace: fix partial SETREGSET for NT_ARM_GCS

Qinxin Xia (1):
ACPI/IORT: Add PMCG platform information for HiSilicon HIP09A

Robin Murphy (1):
arm64: cpufeature: Add GCS to cpucap_is_possible()

Suzuki K Poulose (1):
coco: virt: arm64: Do not enable cca guest driver by default

Will Deacon (2):
drivers/virt: pkvm: Don't fail ioremap() call if MMIO_GUARD fails
MAINTAINERS: Add CCA and pKVM CoCO guest support to the ARM64 entry

Yang Shi (2):
arm64: mte: set VM_MTE_ALLOWED for hugetlbfs at correct place
arm64: mm: Fix zone_dma_limit calculation

 Documentation/arch/arm64/silicon-errata.rst   |  5 ++--
 MAINTAINERS                                   |  2 ++
 arch/arm64/include/asm/cpucaps.h              |  2 ++
 arch/arm64/include/asm/cpufeature.h           |  3 +--
 arch/arm64/include/asm/mman.h                 |  3 ++-
 arch/arm64/kernel/patching.c                  | 21 +++++++---------
 arch/arm64/kernel/ptrace.c                    | 36 +++++++++++++++++++++------
 arch/arm64/mm/context.c                       |  4 +--
 arch/arm64/mm/copypage.c                      |  8 +++---
 arch/arm64/mm/init.c                          | 17 ++++++-------
 drivers/acpi/arm64/iort.c                     |  2 ++
 drivers/virt/coco/arm-cca-guest/Kconfig       |  1 -
 drivers/virt/coco/pkvm-guest/arm-pkvm-guest.c |  6 +----
 fs/hugetlbfs/inode.c                          |  2 +-
 14 files changed, 67 insertions(+), 45 deletions(-)

Catalin