Commit Graph

193 Commits

Author SHA1 Message Date
Richard Henderson
b12a7671b6 target/arm: Adjust and validate mtedesc sizem1
When we added SVE_MTEDESC_SHIFT, we effectively limited the
maximum size of MTEDESC.  Adjust SIZEM1 to consume the remaining
bits (32 - 10 - 5 - 12 == 5).  Assert that the data to be stored
fits within the field (expecting 8 * 4 - 1 == 31, exact fit).

Cc: qemu-stable@nongnu.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Gustavo Romero <gustavo.romero@linaro.org>
Message-id: 20240207025210.8837-4-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-02-15 11:30:44 +00:00
Richard Henderson
b7770d72f5 target/arm: Split out arm_env_mmu_index
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-02-03 08:52:25 +10:00
Stefan Hajnoczi
a4a411fbaf Replace "iothread lock" with "BQL" in comments
The term "iothread lock" is obsolete. The APIs use Big QEMU Lock (BQL)
in their names. Update the code comments to use "BQL" instead of
"iothread lock".

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Paul Durrant <paul@xen.org>
Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Message-id: 20240102153529.486531-5-stefanha@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2024-01-08 10:45:43 -05:00
Philippe Mathieu-Daudé
f6524ddf86 target/arm: Move internal declarations from 'cpu-qom.h' to 'cpu.h'
These definitions and declarations are only used by
target/arm/, no need to expose them to generic hw/.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20231013140116.255-4-philmd@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <c48c9829-3dfa-79cf-3042-454fda0d00dc@linaro.org>
2023-11-07 12:13:27 +01:00
Peter Maydell
4c09abeae8 target/arm: Correctly propagate stage 1 BTI guarded bit in a two-stage walk
In a two-stage translation, the result of the BTI guarded bit should
be the guarded bit from the first stage of translation, as there is
no BTI guard information in stage two.  Our code tried to do this,
but got it wrong, because we currently have two fields where the GP
bit information might live (ARMCacheAttrs::guarded and
CPUTLBEntryFull::extra::arm::guarded), and we were storing the GP bit
in the latter during the stage 1 walk but trying to copy the former
in combine_cacheattrs().

Remove the duplicated storage, and always use the field in
CPUTLBEntryFull; correctly propagate the stage 1 value to the output
in get_phys_addr_twostage().

Note for stable backports: in v8.0 and earlier the field is named
result->f.guarded, not result->f.extra.arm.guarded.

Cc: qemu-stable@nongnu.org
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1950
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20231031173723.26582-1-peter.maydell@linaro.org
2023-11-02 13:36:45 +00:00
Peter Maydell
5a534314a8 target/arm: Move feature test functions to their own header
The feature test functions isar_feature_*() now take up nearly
a thousand lines in target/arm/cpu.h. This header file is included
by a lot of source files, most of which don't need these functions.
Move the feature test functions to their own header file.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20231024163510.2972081-2-peter.maydell@linaro.org
2023-10-27 11:44:32 +01:00
Peter Maydell
69c51dc372 target/arm: Implement MTE tag-checking functions for FEAT_MOPS copies
The FEAT_MOPS memory copy operations need an extra helper routine
for checking for MTE tag checking failures beyond the ones we
already added for memory set operations:
 * mte_mops_probe_rev() does the same job as mte_mops_probe(), but
   it checks tags starting at the provided address and working
   backwards, rather than forwards

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20230912140434.1333369-11-peter.maydell@linaro.org
2023-09-21 16:07:14 +01:00
Peter Maydell
6087df5744 target/arm: Implement the SETG* instructions
The FEAT_MOPS SETG* instructions are very similar to the SET*
instructions, but as well as setting memory contents they also
set the MTE tags. They are architecturally required to operate
on tag-granule aligned regions only.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20230912140434.1333369-10-peter.maydell@linaro.org
2023-09-21 16:07:14 +01:00
Peter Maydell
8163998920 target/arm: Implement MTE tag-checking functions for FEAT_MOPS
The FEAT_MOPS instructions need a couple of helper routines that
check for MTE tag failures:
 * mte_mops_probe() checks whether there is going to be a tag
   error in the next up-to-a-page worth of data
 * mte_check_fail() is an existing function to record the fact
   of a tag failure, which we need to make global so we can
   call it from helper-a64.c

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20230912140434.1333369-7-peter.maydell@linaro.org
2023-09-21 16:07:14 +01:00
Richard Henderson
851ec6eba5 target/arm: Allow cpu to configure GM blocksize
Previously we hard-coded the blocksize with GMID_EL1_BS.
But the value we choose for -cpu max does not match the
value that cortex-a710 uses.

Mirror the way we handle dcz_blocksize.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20230811214031.171020-3-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2023-08-31 09:45:14 +01:00
Jean-Philippe Brucker
e1ee56ec23 target/arm: Pass security space rather than flag for AT instructions
At the moment we only handle Secure and Nonsecure security spaces for
the AT instructions. Add support for Realm and Root.

For AArch64, arm_security_space() gives the desired space. ARM DDI0487J
says (R_NYXTL):

  If EL3 is implemented, then when an address translation instruction
  that applies to an Exception level lower than EL3 is executed, the
  Effective value of SCR_EL3.{NSE, NS} determines the target Security
  state that the instruction applies to.

For AArch32, some instructions can access NonSecure space from Secure,
so we still need to pass the state explicitly to do_ats_write().

Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20230809123706.1842548-5-jean-philippe@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2023-08-22 17:31:12 +01:00
Jean-Philippe Brucker
f1269a98aa target/arm: Skip granule protection checks for AT instructions
GPC checks are not performed on the output address for AT instructions,
as stated by ARM DDI 0487J in D8.12.2:

  When populating PAR_EL1 with the result of an address translation
  instruction, granule protection checks are not performed on the final
  output address of a successful translation.

Rename get_phys_addr_with_secure(), since it's only used to handle AT
instructions.

Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20230809123706.1842548-4-jean-philippe@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2023-08-22 17:31:12 +01:00
Richard Henderson
11b76fda0a target/arm: Implement GPC exceptions
Handle GPC Fault types in arm_deliver_fault, reporting as
either a GPC exception at EL3, or falling through to insn
or data aborts at various exception levels.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20230620124418.805717-19-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2023-06-23 11:15:48 +01:00
Richard Henderson
523da6b963 target/arm: Check alignment in helper_mte_check
Fixes a bug in that with SCTLR.A set, we should raise any
alignment fault before raising any MTE check fault.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20230530191438.411344-15-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2023-06-06 10:19:38 +01:00
Francesco Cagnin
0ca52a5fed arm: move KVM breakpoints helpers
These helpers will be also used for HVF. Aside from reformatting a
couple of comments for 'checkpatch.pl' and updating meson to compile
'hyp_gdbstub.c', this is just code motion.

Signed-off-by: Francesco Cagnin <fcagnin@quarkslab.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20230601153107.81955-2-fcagnin@quarkslab.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2023-06-06 10:19:29 +01:00
Peter Maydell
478dccbb99 target/arm: Correct AArch64.S2MinTxSZ 32-bit EL1 input size check
In check_s2_mmu_setup() we have a check that is attempting to
implement the part of AArch64.S2MinTxSZ that is specific to when EL1
is AArch32:

    if !s1aarch64 then
        // EL1 is AArch32
        min_txsz = Min(min_txsz, 24);

Unfortunately we got this wrong in two ways:

(1) The minimum txsz corresponds to a maximum inputsize, but we got
the sense of the comparison wrong and were faulting for all
inputsizes less than 40 bits

(2) We try to implement this as an extra check that happens after
we've done the same txsz checks we would do for an AArch64 EL1, but
in fact the pseudocode is *loosening* the requirements, so that txsz
values that would fault for an AArch64 EL1 do not fault for AArch32
EL1, because it does Min(old_min, 24), not Max(old_min, 24).

You can see this also in the text of the Arm ARM in table D8-8, which
shows that where the implemented PA size is less than 40 bits an
AArch32 EL1 is still OK with a configured stage2 T0SZ for a 40 bit
IPA, whereas if EL1 is AArch64 then the T0SZ must be big enough to
constrain the IPA to the implemented PA size.

Because of part (2), we can't do this as a separate check, but
have to integrate it into aa64_va_parameters(). Add a new argument
to that function to indicate that EL1 is 32-bit. All the existing
callsites except the one in get_phys_addr_lpae() can pass 'false',
because they are either doing a lookup for a stage 1 regime or
else they don't care about the tsz/tsz_oob fields.

Cc: qemu-stable@nongnu.org
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1627
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20230509092059.3176487-1-peter.maydell@linaro.org
2023-05-12 16:01:25 +01:00
Fabiano Rosas
39920a0495 target/arm: Move 64-bit TCG CPUs into tcg/
Move the 64-bit CPUs that are TCG-only:
- cortex-a35
- cortex-a55
- cortex-a72
- cortex-a76
- a64fx
- neoverse-n1

Keep the CPUs that can be used with KVM:
- cortex-a57
- cortex-a53
- max
- host

Signed-off-by: Fabiano Rosas <farosas@suse.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20230426180013.14814-6-farosas@suse.de
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2023-05-02 10:21:32 +01:00
Fabiano Rosas
34bfe46732 target/arm: Move cortex sysregs into a separate file
The file cpu_tcg.c is about to be moved into the tcg/ directory, so
move the register definitions into a new file.

Also move the function declaration to the more appropriate cpregs.h.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Fabiano Rosas <farosas@suse.de>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20230426180013.14814-2-farosas@suse.de
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2023-05-02 10:21:32 +01:00
Philippe Mathieu-Daudé
b15bdc9651 target/arm: Fix non-TCG build failure by inlining pauth_ptr_mask()
aarch64_gdb_get_pauth_reg() -- although disabled since commit
5787d17a42 ("target/arm: Don't advertise aarch64-pauth.xml to
gdb") is still compiled in. It calls pauth_ptr_mask() which is
located in target/arm/tcg/pauth_helper.c, a TCG specific helper.

To avoid a linking error when TCG is not enabled:

  Undefined symbols for architecture arm64:
    "_pauth_ptr_mask", referenced from:
        _aarch64_gdb_get_pauth_reg in target_arm_gdbstub64.c.o
  ld: symbol(s) not found for architecture arm64
  clang: error: linker command failed with exit code 1 (use -v to see invocation)

- Inline pauth_ptr_mask() in aarch64_gdb_get_pauth_reg()
  (this is the single user),
- Rename pauth_ptr_mask_internal() as pauth_ptr_mask() and
  inline it in "internals.h",

Fixes: e995d5cce4 ("target/arm: Implement gdbstub pauth extension")
Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Fabiano Rosas <farosas@suse.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20230328212516.29592-1-philmd@linaro.org
[PMM: reinstated doc comment]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2023-04-03 16:12:29 +01:00
Richard Henderson
6ce21abd40 target/arm: Improve arm_rmode_to_sf
Use proper enumeration types for input and output.
Use a const array to perform the mapping, with an
assert that the input is valid.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-03-13 06:44:38 -07:00
David Reiss
6c8676512f target/arm: Export arm_v7m_get_sp_ptr
Allow the function to be used outside of m_helper.c.
Move to be outside of ifndef CONFIG_USER_ONLY block.
Rename from get_v7m_sp_ptr.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: David Reiss <dreiss@meta.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20230227213329.793795-14-richard.henderson@linaro.org
[rth: Split out of a larger patch]
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2023-03-06 14:08:11 +00:00
David Reiss
48688c9441 target/arm: Export arm_v7m_mrs_control
Allow the function to be used outside of m_helper.c.
Rename with an "arm_" prefix.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: David Reiss <dreiss@meta.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20230227213329.793795-13-richard.henderson@linaro.org
[rth: Split out of a larger patch]
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2023-03-06 14:08:11 +00:00
Richard Henderson
e995d5cce4 target/arm: Implement gdbstub pauth extension
The extension is primarily defined by the Linux kernel NT_ARM_PAC_MASK
ptrace register set.

The original gdb feature consists of two masks, data and code, which are
used to mask out the authentication code within a pointer.  Following
discussion with Luis Machado, add two more masks in order to support
pointers within the high half of the address space (i.e. TTBR1 vs TTBR0).

Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1105
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20230227213329.793795-12-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2023-03-06 14:08:11 +00:00
Richard Henderson
abf1f1b03a target/arm: Create pauth_ptr_mask
Keep the logic for pauth within pauth_helper.c, and expose
a helper function for use with the gdbstub pac extension.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20230227213329.793795-11-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2023-03-06 14:08:11 +00:00
Richard Henderson
e03aba8853 target/arm: Move arm_gen_dynamic_svereg_xml to gdbstub64.c
The function is only used for aarch64, so move it to the
file that has the other aarch64 gdbstub stuff.  Move the
declaration to internals.h.

Reviewed-by: Fabiano Rosas <farosas@suse.de>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20230227213329.793795-4-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2023-03-06 14:08:11 +00:00
Richard Henderson
963a6b91c2 target/arm: Normalize aarch64 gdbstub get/set function names
Make the form of the function names between fp and sve the same:
  - arm_gdb_*_svereg -> aarch64_gdb_*_sve_reg.
  - aarch64_fpu_gdb_*_reg -> aarch64_gdb_*_fpu_reg.

Reviewed-by: Fabiano Rosas <farosas@suse.de>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20230227213329.793795-2-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2023-03-06 14:08:11 +00:00
Philippe Mathieu-Daudé
d90ebc4731 target/cpu: Restrict do_transaction_failed() handlers to sysemu
The 'hwaddr' type is only available / meaningful on system emulation.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20221216215519.5522-6-philmd@linaro.org>
2023-02-27 22:29:01 +01:00
Fabiano Rosas
2ea2998f27 target/arm: Move regime_using_lpae_format into internal.h
This function is needed by common code (ptw.c), so move it along with
the other regime_* functions in internal.h. When we enable the build
without TCG, the tlb_helper.c file will not be present.

Signed-off-by: Fabiano Rosas <farosas@suse.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2023-02-27 13:27:04 +00:00
Fabiano Rosas
671efad16a target/arm: Move hflags code into the tcg directory
The hflags are used only for TCG code, so introduce a new file
hflags.c to keep that code.

Signed-off-by: Fabiano Rosas <farosas@suse.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2023-02-27 13:27:04 +00:00
Philippe Mathieu-Daudé
eda349be62 target/arm: Reduce arm_v7m_mmu_idx_[all/for_secstate_and_priv]() scope
arm_v7m_mmu_idx_all() and arm_v7m_mmu_idx_for_secstate_and_priv()
are only used for system emulation in m_helper.c.
Move the definitions to avoid prototype forward declarations.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20230206223502.25122-4-philmd@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2023-02-16 16:00:46 +00:00
Peter Maydell
361c33f6b8 target/arm: Implement FGT trapping infrastructure
Implement the machinery for fine-grained traps on normal sysregs.
Any sysreg with a fine-grained trap will set the new field to
indicate which FGT register bit it should trap on.

FGT traps only happen when an AArch64 EL2 enables them for
an AArch64 EL1. They therefore are only relevant for AArch32
cpregs when the cpreg can be accessed from EL0. The logic
in access_check_cp_reg() will check this, so it is safe to
add a .fgt marking to an ARM_CP_STATE_BOTH ARMCPRegInfo.

The DO_BIT and DO_REV_BIT macros define enum constants FGT_##bitname
which can be used to specify the FGT bit, eg
   .fgt = FGT_AFSR0_EL1
(We assume that there is no bit name duplication across the FGT
registers, for brevity's sake.)

Subsequent commits will add the .fgt fields to the relevant register
definitions and define the FGT_nnn values for them.

Note that some of the FGT traps are for instructions that we don't
handle via the cpregs mechanisms (mostly these are instruction traps).
Those we will have to handle separately.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Fuad Tabba <tabba@google.com>
Message-id: 20230130182459.3309057-10-peter.maydell@linaro.org
Message-id: 20230127175507.2895013-10-peter.maydell@linaro.org
2023-02-03 12:59:23 +00:00
Tobias Röhmel
452c67a427 target/arm: Enable TTBCR_EAE for ARMv8-R AArch32
ARMv8-R AArch32 CPUs behave as if TTBCR.EAE is always 1 even
tough they don't have the TTBCR register.
See ARM Architecture Reference Manual Supplement - ARMv8, for the ARMv8-R
AArch32 architecture profile Version:A.c section C1.2.

Signed-off-by: Tobias Röhmel <tobias.roehmel@rwth-aachen.de>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20221206102504.165775-5-tobias.roehmel@rwth-aachen.de
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2023-01-05 11:51:09 +00:00
Evgeny Ermakov
475e56b630 target/arm: Set TCGCPUOps.restore_state_to_opc for v7m
This setting got missed, breaking v7m.

Fixes: 56c6c98df8 ("target/arm: Convert to tcg_ops restore_state_to_opc")
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1347
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Evgeny Ermakov <evgeny.v.ermakov@gmail.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20221129204146.550394-1-richard.henderson@linaro.org>
2022-11-29 18:15:26 -05:00
Richard Henderson
f0a398a249 target/arm: Add ARMFault_UnsuppAtomicUpdate
This fault type is to be used with FEAT_HAFDBS when
the guest enables hw updates, but places the tables
in memory where atomic updates are unsupported.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 20221024051851.3074715-7-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-10-27 10:27:23 +01:00
Richard Henderson
8973922783 target/arm: Extract HA and HD in aa64_va_parameters
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 20221024051851.3074715-5-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-10-27 10:27:23 +01:00
Richard Henderson
edc05dd43a target/arm: Introduce regime_is_stage2
Reduce the amount of typing required for this check.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20221024051851.3074715-2-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-10-27 10:27:23 +01:00
Peter Maydell
e4c93e44ab target/arm: Implement FEAT_E0PD
FEAT_E0PD adds new bits E0PD0 and E0PD1 to TCR_EL1, which allow the
OS to forbid EL0 access to half of the address space.  Since this is
an EL0-specific variation on the existing TCR_ELx.{EPD0,EPD1}, we can
implement it entirely in aa64_va_parameters().

This requires moving the existing regime_is_user() to internals.h
so that the code in helper.c can get at it.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20221021160131.3531787-1-peter.maydell@linaro.org
2022-10-27 10:27:23 +01:00
Richard Henderson
50d4c8c1d4 accel/tcg: Make page_alloc_target_data allocation constant
Use a constant target data allocation size for all pages.
This will be necessary to reduce overhead of page tracking.
Since TARGET_PAGE_DATA_SIZE is now required, we can use this
to omit data tracking for targets that don't require it.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-10-26 11:11:28 +10:00
Richard Henderson
937f224559 target/arm: Use probe_access_full for BTI
Add a field to TARGET_PAGE_ENTRY_EXTRA to hold the guarded bit.
In is_guarded_page, use probe_access_full instead of just guessing
that the tlb entry is still present.  Also handles the FIXME about
executing from device memory.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20221011031911.2408754-4-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-10-20 11:27:49 +01:00
Peter Maydell
3c003f7029 target/arm: Use ARMGranuleSize in ARMVAParameters
Now we have an enum for the granule size, use it in the
ARMVAParameters struct instead of the using16k/using64k bools.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20221003162315.2833797-3-peter.maydell@linaro.org
2022-10-10 14:52:25 +01:00
Peter Maydell
104f703d93 target/arm: Don't allow guest to use unimplemented granule sizes
Arm CPUs support some subset of the granule (page) sizes 4K, 16K and
64K.  The guest selects the one it wants using bits in the TCR_ELx
registers.  If it tries to program these registers with a value that
is either reserved or which requests a size that the CPU does not
implement, the architecture requires that the CPU behaves as if the
field was programmed to some size that has been implemented.
Currently we don't implement this, and instead let the guest use any
granule size, even if the CPU ID register fields say it isn't
present.

Make aa64_va_parameters() check against the supported granule size
and force use of a different one if it is not implemented.

(A subsequent commit will make ARMVAParameters use the new enum
rather than the current pair of using16k/using64k bools.)

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20221003162315.2833797-2-peter.maydell@linaro.org
2022-10-10 14:52:25 +01:00
Richard Henderson
7fa7ea8f48 target/arm: Use tlb_set_page_full
Adjust GetPhysAddrResult to fill in CPUTLBEntryFull,
so that it may be passed directly to tlb_set_page_full.

The change is large, but mostly mechanical.  The major
non-mechanical change is page_size -> lg_page_size.
Most of the time this is obvious, and is related to
TARGET_PAGE_BITS.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20221001162318.153420-21-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-10-10 14:52:25 +01:00
Richard Henderson
d902ae7558 target/arm: Fold secure and non-secure a-profile mmu indexes
For a-profile aarch64, which does not bank system registers, it takes
quite a lot of code to switch between security states.  In the process,
registers such as TCR_EL{1,2} must be swapped, which in itself requires
the flushing of softmmu tlbs.  Therefore it doesn't buy us anything to
separate tlbs by security state.

Retain the distinction between Stage2 and Stage2_S.

This will be important as we implement FEAT_RME, and do not wish to
add a third set of mmu indexes for Realm state.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20221001162318.153420-11-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-10-10 14:52:24 +01:00
Richard Henderson
03bea66e7f target/arm: Merge regime_is_secure into get_phys_addr
This is the last use of regime_is_secure; remove it
entirely before changing the layout of ARMMMUIdx.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20221001162318.153420-9-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-10-10 14:52:24 +01:00
Richard Henderson
def8aa5b80 target/arm: Split out get_phys_addr_with_secure
Retain the existing get_phys_addr interface using the security
state derived from mmu_idx.  Move the kerneldoc comments to the
header file where they belong.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20221001162318.153420-6-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-10-10 14:52:24 +01:00
Richard Henderson
e9fb709041 target/arm: Add secure parameter to pmsav8_mpu_lookup
Remove the use of regime_is_secure from pmsav8_mpu_lookup,
passing the new parameter to the lookup instead.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220822152741.1617527-13-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-09-22 16:38:27 +01:00
Richard Henderson
dbf2a71ad6 target/arm: Add is_secure parameter to v8m_security_lookup
Remove the use of regime_is_secure from v8m_security_lookup,
passing the new parameter to the lookup instead.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220822152741.1617527-12-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-09-22 16:38:27 +01:00
Richard Henderson
652c750ee5 target/arm: Remove is_subpage argument to pmsav8_mpu_lookup
This can be made redundant with result->page_size, by moving the basic
set of page_size from get_phys_addr_pmsav8.  We still need to overwrite
page_size when v8m_security_lookup signals a subpage.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220822152741.1617527-11-richard.henderson@linaro.org
[PMM: Update a comment that used to refer to is_subpage]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-09-22 16:38:27 +01:00
Richard Henderson
d2c92e5856 target/arm: Use GetPhysAddrResult in pmsav8_mpu_lookup
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220822152741.1617527-10-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-09-22 16:38:27 +01:00
Richard Henderson
de05a709ec target/arm: Create GetPhysAddrResult
Combine 5 output pointer arguments from get_phys_addr
into a single struct.  Adjust all callers.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220822152741.1617527-2-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-09-22 16:38:27 +01:00