This is in preparation to moving the hflags code into its own file
under the tcg/ directory.
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>
for "all" builds (tcg + kvm), we want to avoid doing
the psci check if tcg is built-in, but not enabled.
Signed-off-by: Claudio Fontana <cfontana@suse.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Fabiano Rosas <farosas@suse.de>
Tested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
make it clearer from the name that this is a tcg-only function.
Signed-off-by: Claudio Fontana <cfontana@suse.de>
Signed-off-by: Fabiano Rosas <farosas@suse.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Tested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20230206223502.25122-5-philmd@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Implement the HFGITR_EL2.SVC_EL0 and SVC_EL1 fine-grained traps.
These trap execution of the SVC instruction from AArch32 and AArch64.
(As usual, AArch32 can only trap from EL0, as fine grained traps are
disabled with an AArch32 EL1.)
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: 20230130182459.3309057-22-peter.maydell@linaro.org
Message-id: 20230127175507.2895013-22-peter.maydell@linaro.org
Implement the HFGITR_EL2.ERET fine-grained trap. This traps
execution from AArch64 EL1 of ERET, ERETAA and ERETAB. The trap is
reported with a syndrome value of 0x1a.
The trap must take precedence over a possible pointer-authentication
trap for ERETAA and ERETAB.
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: 20230130182459.3309057-21-peter.maydell@linaro.org
Message-id: 20230127175507.2895013-21-peter.maydell@linaro.org
Mark up the sysreg definitions for the system instructions
trapped by HFGITR bits 48..63.
Some of these bits are for trapping instructions which are
not in the system instruction encoding (i.e. which are
not handled by the ARMCPRegInfo mechanism):
* ERET, ERETAA, ERETAB
* SVC
We will have to handle those separately and manually.
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: 20230130182459.3309057-20-peter.maydell@linaro.org
Message-id: 20230127175507.2895013-20-peter.maydell@linaro.org
Mark up the sysreg definitions for the system instructions
trapped by HFGITR bits 18..47. These bits cover TLBI
TLB maintenance instructions.
(If we implemented FEAT_XS we would need to trap some of the
instructions added by that feature using these bits; but we don't
yet, so will need to add the .fgt markup when we do.)
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: 20230130182459.3309057-19-peter.maydell@linaro.org
Message-id: 20230127175507.2895013-19-peter.maydell@linaro.org
Mark up the sysreg definitions for the system instructions
trapped by HFGITR bits 12..17. These bits cover AT address
translation instructions.
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: 20230130182459.3309057-18-peter.maydell@linaro.org
Message-id: 20230127175507.2895013-18-peter.maydell@linaro.org
Mark up the sysreg definitions for the system instructions
trapped by HFGITR bits 0..11. These bits cover various
cache maintenance operations.
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: 20230130182459.3309057-17-peter.maydell@linaro.org
Message-id: 20230127175507.2895013-17-peter.maydell@linaro.org
Mark up the sysreg definitions for the registers trapped
by HDFGRTR/HDFGWTR bits 12..x.
Bits 12..22 and bit 58 are for PMU registers.
The remaining bits in HDFGRTR/HDFGWTR are for traps on
registers that are part of features we don't implement:
Bits 23..32 and 63 : FEAT_SPE
Bits 33..48 : FEAT_ETE
Bits 50..56 : FEAT_TRBE
Bits 59..61 : FEAT_BRBE
Bit 62 : FEAT_SPEv1p2.
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: 20230130182459.3309057-16-peter.maydell@linaro.org
Message-id: 20230127175507.2895013-16-peter.maydell@linaro.org
Mark up the sysreg definitions for the registers trapped
by HFGRTR/HFGWTR bits 36..63.
Of these, some correspond to RAS registers which we implement as
always-UNDEF: these don't need any extra handling for FGT because the
UNDEF-to-EL1 always takes priority over any theoretical
FGT-trap-to-EL2.
Bit 50 (NACCDATA_EL1) is for the ACCDATA_EL1 register which is part
of the FEAT_LS64_ACCDATA feature which we don't yet implement.
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: 20230130182459.3309057-14-peter.maydell@linaro.org
Message-id: 20230127175507.2895013-14-peter.maydell@linaro.org
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
Define the system registers which are provided by the
FEAT_FGT fine-grained trap architectural feature:
HFGRTR_EL2, HFGWTR_EL2, HDFGRTR_EL2, HDFGWTR_EL2, HFGITR_EL2
All these registers are a set of bit fields, where each bit is set
for a trap and clear to not trap on a particular system register
access. The R and W register pairs are for system registers,
allowing trapping to be done separately for reads and writes; the I
register is for system instructions where trapping is on instruction
execution.
The data storage in the CPU state struct is arranged as a set of
arrays rather than separate fields so that when we're looking up the
bits for a system register access we can just index into the array
rather than having to use a switch to select a named struct member.
The later FEAT_FGT2 will add extra elements to these arrays.
The field definitions for the new registers are in cpregs.h because
in practice the code that needs them is code that also needs
the cpregs information; cpu.h is included in a lot more files.
We're also going to add some FGT-specific definitions to cpregs.h
in the next commit.
We do not implement HAFGRTR_EL2, because we don't implement
FEAT_AMUv1.
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: 20230130182459.3309057-9-peter.maydell@linaro.org
Message-id: 20230127175507.2895013-9-peter.maydell@linaro.org
The HSTR_EL2 register is not supposed to have an effect unless EL2 is
enabled in the current security state. We weren't checking for this,
which meant that if the guest set up the HSTR_EL2 register we would
incorrectly trap even for accesses from Secure EL0 and EL1.
Add the missing checks. (Other places where we look at HSTR_EL2
for the not-in-v8A bits TTEE and TJDBX are already checking that
we are in NS EL0 or EL1, so there we alredy know EL2 is enabled.)
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: 20230130182459.3309057-8-peter.maydell@linaro.org
Message-id: 20230127175507.2895013-8-peter.maydell@linaro.org
The AArch32 ATS12NSO* address translation operations are supposed to
trap to either EL2 or EL3 if they're executed at Secure EL1 (which
can only happen if EL3 is AArch64). We implement this, but we got
the syndrome value wrong: like other traps to EL2 or EL3 on an
AArch32 cpreg access, they should report the 0x3 syndrome, not the
0x0 'uncategorized' syndrome. This is clear in the access pseudocode
for these instructions.
Fix the syndrome value for these operations by correcting the
returned value from the ats_access() function.
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: 20230130182459.3309057-3-peter.maydell@linaro.org
Message-id: 20230127175507.2895013-3-peter.maydell@linaro.org
The encodings 0,0,C7,C9,0 and 0,0,C7,C9,1 are AT SP1E1RP and AT
S1E1WP, but our ARMCPRegInfo definitions for them incorrectly name
them AT S1E1R and AT S1E1W (which are entirely different
instructions). Fix the names.
(This has no guest-visible effect as the names are for debug purposes
only.)
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: 20230130182459.3309057-2-peter.maydell@linaro.org
Message-id: 20230127175507.2895013-2-peter.maydell@linaro.org
Unify the two helper_set_pstate_{sm,za} in this function.
Do not call helper_* functions from svcr_write.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Fabiano Rosas <farosas@suse.de>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20230112102436.1913-8-philmd@linaro.org
Message-Id: <20230112004322.161330-1-richard.henderson@linaro.org>
[PMD: Split patch in multiple tiny steps]
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
ARM trusted firmware, when built with FEAT_HCX support, sets SCR_EL3.HXEn bit
to allow EL2 to modify HCRX_EL2 register without trapping it in EL3. Qemu
uses a valid mask to clear unsupported SCR_EL3 bits when emulating SCR_EL3
write, and that mask doesn't include SCR_EL3.HXEn bit even if FEAT_HCX is
enabled and exposed to the guest. As a result EL3 writes of that bit are
ignored.
Cc: qemu-stable@nongnu.org
Signed-off-by: Evgeny Iakovlev <eiakovlev@linux.microsoft.com>
Message-id: 20230105221251.17896-4-eiakovlev@linux.microsoft.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
In CPUID registers exposed to userspace, some registers were missing
and some fields were not exposed. This patch aligns exposed ID
registers and their fields with what the upstream kernel currently
exposes.
Specifically, the following new ID registers/fields are exposed to
userspace:
ID_AA64PFR1_EL1.BT: bits 3-0
ID_AA64PFR1_EL1.MTE: bits 11-8
ID_AA64PFR1_EL1.SME: bits 27-24
ID_AA64ZFR0_EL1.SVEver: bits 3-0
ID_AA64ZFR0_EL1.AES: bits 7-4
ID_AA64ZFR0_EL1.BitPerm: bits 19-16
ID_AA64ZFR0_EL1.BF16: bits 23-20
ID_AA64ZFR0_EL1.SHA3: bits 35-32
ID_AA64ZFR0_EL1.SM4: bits 43-40
ID_AA64ZFR0_EL1.I8MM: bits 47-44
ID_AA64ZFR0_EL1.F32MM: bits 55-52
ID_AA64ZFR0_EL1.F64MM: bits 59-56
ID_AA64SMFR0_EL1.F32F32: bit 32
ID_AA64SMFR0_EL1.B16F32: bit 34
ID_AA64SMFR0_EL1.F16F32: bit 35
ID_AA64SMFR0_EL1.I8I32: bits 39-36
ID_AA64SMFR0_EL1.F64F64: bit 48
ID_AA64SMFR0_EL1.I16I64: bits 55-52
ID_AA64SMFR0_EL1.FA64: bit 63
ID_AA64MMFR0_EL1.ECV: bits 63-60
ID_AA64MMFR1_EL1.AFP: bits 47-44
ID_AA64MMFR2_EL1.AT: bits 35-32
ID_AA64ISAR0_EL1.RNDR: bits 63-60
ID_AA64ISAR1_EL1.FRINTTS: bits 35-32
ID_AA64ISAR1_EL1.BF16: bits 47-44
ID_AA64ISAR1_EL1.DGH: bits 51-48
ID_AA64ISAR1_EL1.I8MM: bits 55-52
ID_AA64ISAR2_EL1.WFxT: bits 3-0
ID_AA64ISAR2_EL1.RPRES: bits 7-4
ID_AA64ISAR2_EL1.GPA3: bits 11-8
ID_AA64ISAR2_EL1.APA3: bits 15-12
The code is also refactored to use symbolic names for ID register fields
for better readability and maintainability.
The test case in tests/tcg/aarch64/sysregs.c is also updated to match
the intended behavior.
Signed-off-by: Zhuojia Shen <chaosdefinition@hotmail.com>
Message-id: DS7PR12MB6309FB585E10772928F14271ACE79@DS7PR12MB6309.namprd12.prod.outlook.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
[PMM: use Sn_n_Cn_Cn_n syntax to work with older assemblers
that don't recognize id_aa64isar2_el1 and id_aa64mmfr2_el1]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Fix the following:
ERROR: spaces required around that '|' (ctx:VxV)
ERROR: space required before the open parenthesis '('
ERROR: spaces required around that '+' (ctx:VxB)
ERROR: space prohibited between function name and open parenthesis '('
(the last two still have some occurrences in macros which I left
behind because it might impact readability)
Signed-off-by: Fabiano Rosas <farosas@suse.de>
Reviewed-by: Claudio Fontana <cfontana@suse.de>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Message-id: 20221213190537.511-3-farosas@suse.de
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Fix these:
WARNING: Block comments use a leading /* on a separate line
WARNING: Block comments use * on subsequent lines
WARNING: Block comments use a trailing */ on a separate line
Signed-off-by: Fabiano Rosas <farosas@suse.de>
Reviewed-by: Claudio Fontana <cfontana@suse.de>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Message-id: 20221213190537.511-2-farosas@suse.de
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
RVBAR shadows RVBAR_ELx where x is the highest exception
level if the highest EL is not EL3. This patch also allows
ARMv8 CPUs to change the reset address with
the rvbar property.
Signed-off-by: Tobias Röhmel <tobias.roehmel@rwth-aachen.de>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20221206102504.165775-3-tobias.roehmel@rwth-aachen.de
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Cores with PMSA have the MPUIR register which has the
same encoding as the MIDR alias with opc2=4. So we only
add that alias if we are not realizing a core that
implements PMSA.
Signed-off-by: Tobias Röhmel <tobias.roehmel@rwth-aachen.de>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20221206102504.165775-2-tobias.roehmel@rwth-aachen.de
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
For FEAT_EVT, the HCR_EL2.TID4 trap allows trapping of the cache ID
registers CCSIDR_EL1, CCSIDR2_EL1, CLIDR_EL1 and CSSELR_EL1 (and
their AArch32 equivalents). This is a subset of the registers
trapped by HCR_EL2.TID2, which includes all of these and also the
CTR_EL0 register.
Our implementation already uses a separate access function for
CTR_EL0 (ctr_el0_access()), so all of the registers currently using
access_aa64_tid2() should also be checking TID4. Make that function
check both TID2 and TID4, and rename it appropriately.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
For FEAT_EVT, the HCR_EL2.TICAB bit allows trapping of the ICIALLUIS
and IC IALLUIS cache maintenance instructions.
The HCR_EL2.TOCU bit traps all the other cache maintenance
instructions that operate to the point of unification:
AArch64 IC IVAU, IC IALLU, DC CVAU
AArch32 ICIMVAU, ICIALLU, DCCMVAU
The two trap bits between them cover all of the cache maintenance
instructions which must also check the HCR_TPU flag. Turn the old
aa64_cacheop_pou_access() function into a helper function which takes
the set of HCR_EL2 flags to check as an argument, and call it from
new access_ticab() and access_tocu() functions as appropriate for
each cache op.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
For FEAT_EVT, the HCR_EL2.TTLBOS bit allows trapping on EL1
use of TLB maintenance instructions that operate on the
outer shareable domain:
TLBI VMALLE1OS, TLBI VAE1OS, TLBI ASIDE1OS,TLBI VAAE1OS,
TLBI VALE1OS, TLBI VAALE1OS, TLBI RVAE1OS, TLBI RVAAE1OS,
TLBI RVALE1OS, and TLBI RVAALE1OS.
(There are no AArch32 outer-shareable TLB maintenance ops.)
Implement the trapping.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
For FEAT_EVT, the HCR_EL2.TTLBIS bit allows trapping on EL1 use of
TLB maintenance instructions that operate on the inner shareable
domain:
AArch64:
TLBI VMALLE1IS, TLBI VAE1IS, TLBI ASIDE1IS, TLBI VAAE1IS,
TLBI VALE1IS, TLBI VAALE1IS, TLBI RVAE1IS, TLBI RVAAE1IS,
TLBI RVALE1IS, and TLBI RVAALE1IS.
AArch32:
TLBIALLIS, TLBIMVAIS, TLBIASIDIS, TLBIMVAAIS, TLBIMVALIS,
and TLBIMVAALIS.
Add the trapping support.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
FEAT_EVT adds five new bits to the HCR_EL2 register: TTLBIS, TTLBOS,
TICAB, TOCU and TID4. These allow the guest to enable trapping of
various EL1 instructions to EL2. In this commit, add the necessary
code to allow the guest to set these bits if the feature is present;
because the bit is always zero when the feature isn't present we
won't need to use explicit feature checks in the "trap on condition"
tests in the following commits.
Note that although full implementation of the feature (mandatory from
Armv8.5 onward) requires all five trap bits, the ID registers permit
a value indicating that only TICAB, TOCU and TID4 are implemented,
which might be the case for CPUs between Armv8.2 and Armv8.5.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
We need to check HCR_E2H and HCR_TGE to select the right MMU index for
the correct translation regime.
To check for EL2&0 translation regime:
- For S1E0*, S1E1* and S12E* ops, check both HCR_E2H and HCR_TGE
- For S1E2* ops, check only HCR_E2H
Signed-off-by: Ake Koomsin <ake@igel.co.jp>
Message-id: 20221101064250.12444-1-ake@igel.co.jp
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
When we implemented the PAN support we theoretically wanted
to support it for both AArch32 and AArch64, but in practice
several bugs made it essentially unusable with an AArch32
guest. Fix all those problems:
- Use CPSR.PAN to check for PAN state in aarch32 mode
- throw permission fault during address translation when PAN is
enabled and kernel tries to access user acessible page
- ignore SCTLR_XP bit for armv7 and armv8 (conflicts with SCTLR_SPAN).
Signed-off-by: Timofey Kutergin <tkutergin@gmail.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20221027112619.2205229-1-tkutergin@gmail.com
[PMM: tweak commit message]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The HCR_EL2.TTLB bit is supposed to trap all EL1 execution of TLB
maintenance instructions. However we have added new TLB insns for
FEAT_TLBIOS and FEAT_TLBIRANGE, and forgot to set their accessfn to
access_ttlb. Add the missing accessfns.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
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>
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>
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
Compare only the VMID field when considering whether we need to flush.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20221011031911.2408754-7-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
We had been marking this ARM_MMU_IDX_NOTLB, move it to a real tlb.
Flush the tlb when invalidating stage 1+2 translations. Re-use
alle1_tlbmask() for other instances of EL1&0 + Stage2.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20221011031911.2408754-6-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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
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
