[PATCH v7 00/42] target/arm: Implement ARMv8.5-MemTag, system mode

[Richard Henderson]

Version 6 was back in March:
https://lists.nongnu.org/archive/html/qemu-devel/2020-03/msg03790.html

Version 7 is a rebase on master, which now contains all prereqs.
In addition, two bugs fixed, pointed out by users of the branch.

I've done light testing against

https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git/log/?h=devel/mte-v4

I still have not implemented the arm,armv8.5-memtag OF property
expected by that branch, so I have been disabling it.


r~


diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c
index b297a37c1b13..b5f18e63f8d1 100644
--- a/arch/arm64/kernel/cpufeature.c
+++ b/arch/arm64/kernel/cpufeature.c
@@ -155,6 +155,7 @@ s64 mte_ftr_filter
                return ID_AA64PFR1_MTE_NI;
        }
 
+#if 0
        /* check the DT "memory" nodes for MTE support */
        for_each_node_by_type(np, "memory") {
                memory_checked = true;
@@ -167,6 +168,7 @@ s64 mte_ftr_filter
                mte_capable = false;
                return ID_AA64PFR1_MTE_NI;
        }
+#endif
 
        return val;
 }


Richard Henderson (42):
  target/arm: Add isar tests for mte
  target/arm: Improve masking of SCR RES0 bits
  target/arm: Add support for MTE to SCTLR_ELx
  target/arm: Add support for MTE to HCR_EL2 and SCR_EL3
  target/arm: Rename DISAS_UPDATE to DISAS_UPDATE_EXIT
  target/arm: Add DISAS_UPDATE_NOCHAIN
  target/arm: Add MTE system registers
  target/arm: Add MTE bits to tb_flags
  target/arm: Implement the IRG instruction
  target/arm: Implement the ADDG, SUBG instructions
  target/arm: Implement the GMI instruction
  target/arm: Implement the SUBP instruction
  target/arm: Define arm_cpu_do_unaligned_access for user-only
  target/arm: Add helper_probe_access
  target/arm: Implement LDG, STG, ST2G instructions
  target/arm: Implement the STGP instruction
  target/arm: Restrict the values of DCZID.BS under TCG
  target/arm: Simplify DC_ZVA
  target/arm: Implement the LDGM, STGM, STZGM instructions
  target/arm: Implement the access tag cache flushes
  target/arm: Move regime_el to internals.h
  target/arm: Move regime_tcr to internals.h
  target/arm: Add gen_mte_check1
  target/arm: Add gen_mte_checkN
  target/arm: Implement helper_mte_check1
  target/arm: Implement helper_mte_checkN
  target/arm: Add helper_mte_check_zva
  target/arm: Use mte_checkN for sve unpredicated loads
  target/arm: Use mte_checkN for sve unpredicated stores
  target/arm: Use mte_check1 for sve LD1R
  target/arm: Add mte helpers for sve scalar + int loads
  target/arm: Add mte helpers for sve scalar + int stores
  target/arm: Add mte helpers for sve scalar + int ff/nf loads
  target/arm: Handle TBI for sve scalar + int memory ops
  target/arm: Add mte helpers for sve scatter/gather memory ops
  target/arm: Complete TBI clearing for user-only for SVE
  target/arm: Implement data cache set allocation tags
  target/arm: Set PSTATE.TCO on exception entry
  target/arm: Enable MTE
  target/arm: Cache the Tagged bit for a page in MemTxAttrs
  target/arm: Create tagged ram when MTE is enabled
  target/arm: Add allocation tag storage for system mode

 target/arm/cpu.h               |   36 +-
 target/arm/helper-a64.h        |   16 +
 target/arm/helper-sve.h        |  491 +++++++++++
 target/arm/helper.h            |    2 +
 target/arm/internals.h         |  148 ++++
 target/arm/translate-a64.h     |    5 +
 target/arm/translate.h         |   23 +-
 hw/arm/virt.c                  |   52 ++
 linux-user/aarch64/cpu_loop.c  |    7 +
 linux-user/arm/cpu_loop.c      |    7 +
 target/arm/cpu.c               |   77 +-
 target/arm/cpu64.c             |    1 +
 target/arm/helper-a64.c        |   94 +--
 target/arm/helper.c            |  350 ++++++--
 target/arm/mte_helper.c        |  897 ++++++++++++++++++++
 target/arm/op_helper.c         |   16 +
 target/arm/sve_helper.c        |  746 ++++++++++++++---
 target/arm/tlb_helper.c        |   41 +-
 target/arm/translate-a64.c     |  607 ++++++++++++--
 target/arm/translate-sve.c     | 1421 ++++++++++++++++++++------------
 target/arm/translate-vfp.inc.c |    2 +-
 target/arm/translate.c         |   16 +-
 target/arm/Makefile.objs       |    1 +
 23 files changed, 4206 insertions(+), 850 deletions(-)
 create mode 100644 target/arm/mte_helper.c

-- 
2.25.1