This patch set does two things:
(1) Remove assert(!probe) from the x86 tlb_fill
It turns out that this is a prerequisite for
[PATCH v6 00/21] linux-user: Fix siginfo_t contents when jumping
to non-readable pages
because of a new use of probe_access(..., nonfault)
when comparing TBs that cross a page boundary.
Patches 7-10 are sufficient to fix this.
After auditing all of the targets, Sparc has a similar assert,
and AVR simply doesn't check probe at all. Both will need fixing.
(2) Use atomic operations for pte updates, which is a long-standing
bug since our conversion to MTTCG.
For simplicity, patches 1-6 are from the middle of
("[PATCH v2 00/66] target/arm: Implement FEAT_HAFDBS")
r~
Richard Henderson (14):
accel/tcg: Rename CPUIOTLBEntry to CPUTLBEntryFull
accel/tcg: Drop addr member from SavedIOTLB
accel/tcg: Suppress auto-invalidate in probe_access_internal
accel/tcg: Introduce probe_access_full
accel/tcg: Introduce tlb_set_page_full
include/exec: Introduce TARGET_PAGE_ENTRY_EXTRA
target/i386: Use MMUAccessType across excp_helper.c
target/i386: Direct call get_hphys from mmu_translate
target/i386: Introduce structures for mmu_translate
target/i386: Reorg GET_HPHYS
target/i386: Add MMU_PHYS_IDX and MMU_NESTED_IDX
target/i386: Use MMU_NESTED_IDX for vmload/vmsave
target/i386: Combine 5 sets of variables in mmu_translate
target/i386: Use atomic operations for pte updates
include/exec/cpu-defs.h | 45 +-
include/exec/exec-all.h | 33 ++
include/hw/core/cpu.h | 1 -
target/i386/cpu-param.h | 2 +-
target/i386/cpu.h | 5 +-
accel/tcg/cputlb.c | 215 +++++----
target/arm/mte_helper.c | 14 +-
target/arm/sve_helper.c | 4 +-
target/arm/translate-a64.c | 2 +-
target/i386/tcg/sysemu/excp_helper.c | 692 +++++++++++++++++----------
target/i386/tcg/sysemu/svm_helper.c | 234 +++++----
target/s390x/tcg/mem_helper.c | 4 -
12 files changed, 772 insertions(+), 479 deletions(-)
--
2.34.1
