Commit Graph

1088 Commits

Author SHA1 Message Date
Daniel Henrique Barboza
1770b2f2d3 accel/tcg: Add 'size' param to probe_access_flags()
probe_access_flags() as it is today uses probe_access_full(), which in
turn uses probe_access_internal() with size = 0. probe_access_internal()
then uses the size to call the tlb_fill() callback for the given CPU.
This size param ('fault_size' as probe_access_internal() calls it) is
ignored by most existing .tlb_fill callback implementations, e.g.
arm_cpu_tlb_fill(), ppc_cpu_tlb_fill(), x86_cpu_tlb_fill() and
mips_cpu_tlb_fill() to name a few.

But RISC-V riscv_cpu_tlb_fill() actually uses it. The 'size' parameter
is used to check for PMP (Physical Memory Protection) access. This is
necessary because PMP does not make any guarantees about all the bytes
of the same page having the same permissions, i.e. the same page can
have different PMP properties, so we're forced to make sub-page range
checks. To allow RISC-V emulation to do a probe_acess_flags() that
covers PMP, we need to either add a 'size' param to the existing
probe_acess_flags() or create a new interface (e.g.
probe_access_range_flags).

There are quite a few probe_* APIs already, so let's add a 'size' param
to probe_access_flags() and re-use this API. This is done by open coding
what probe_access_full() does inside probe_acess_flags() and passing the
'size' param to probe_acess_internal(). Existing probe_access_flags()
callers use size = 0 to not change their current API usage. 'size' is
asserted to enforce single page access like probe_access() already does.

No behavioral changes intended.

Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Message-Id: <20230223234427.521114-2-dbarboza@ventanamicro.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-02-28 10:32:31 -10:00
Richard Henderson
2b0fa727f7 target/s390x: Use tcg_constant_* in translate_vx.c.inc
In most cases, this is a simple local allocate and free
replaced by tcg_constant_*.  In three cases, a variable
temp was initialized with a constant value -- reorg to
localize the constant.  In gen_acc, this fixes a leak.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-Id: <20230220184052.163465-5-richard.henderson@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2023-02-27 09:15:39 +01:00
Richard Henderson
6276d93faa target/s390x: Use tcg_constant_i32 for fpinst_extract_m34
Return a constant or NULL, which means the free may be
removed from all callers of fpinst_extract_m34.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-Id: <20230220184052.163465-4-richard.henderson@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2023-02-27 09:15:39 +01:00
Richard Henderson
f5d7b0e2e0 target/s390x: Use tcg_constant_* for DisasCompare
The a and b fields are not modified by the consumer,
and while we need not free a constant, tcg will quietly
ignore such frees, so free_compare need not be changed.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-Id: <20230220184052.163465-3-richard.henderson@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2023-02-27 09:15:39 +01:00
Richard Henderson
f1ea739bd5 target/s390x: Use tcg_constant_* in local contexts
Replace tcg_const_* with tcg_constant_* in contexts
where the free to remove is nearby.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20230220184052.163465-2-richard.henderson@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2023-02-27 09:15:39 +01:00
Richard Henderson
e73a0f4075 target/s390x: Hoist some computation in access_memmove
Ensure that the total length is in a local variable
across the byte loop.  Compute size1 difference once.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20230109201856.3916639-8-richard.henderson@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2023-02-27 09:15:39 +01:00
Richard Henderson
61dee10ff0 target/s390x: Inline do_access_{get,set}_byte
Inline into the parent functions with a simple test
to select the page, and a new define to remove ifdefs.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20230109201856.3916639-7-richard.henderson@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2023-02-27 09:15:39 +01:00
Richard Henderson
96b1416fda target/s390x: Remove TLB_NOTDIRTY workarounds
When this code was written, it was using tlb_vaddr_to_host,
which does not handle TLB_DIRTY.  Since then, it has been
converted to probe_access_flags, which does.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Acked-by: David Hildenbrand <david@redhat.com>
Message-Id: <20230109201856.3916639-6-richard.henderson@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2023-02-27 09:15:39 +01:00
Richard Henderson
fb391b0b47 target/s390x: Tidy access_prepare_nf
Assign to access struct immediately, rather than waiting
until the end of the function.  This means we can pass
address of haddr struct members instead of allocating
extra space on the local stack.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20230109201856.3916639-5-richard.henderson@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2023-02-27 09:15:39 +01:00
Richard Henderson
bebc8ade70 target/s390x: Use void* for haddr in S390Access
The interface from probe_access_flags is void*, and matching
that will be helpful.  We already rely on the gcc extension
for byte arithmetic on void*.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20230109201856.3916639-4-richard.henderson@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2023-02-27 09:15:39 +01:00
Richard Henderson
7ba5da818a target/s390x: Pass S390Access pointer into access_prepare
Passing a pointer from the caller down to access_prepare_nf
eliminates a structure copy.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20230109201856.3916639-3-richard.henderson@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2023-02-27 09:15:39 +01:00
Richard Henderson
4049431478 target/s390x: Fix s390_probe_access for user-only
In db9aab5783 we broke the contract of s390_probe_access, in that it
no longer returned an exception code, nor set __excp_addr.  Fix both.

Reported-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20230109201856.3916639-2-richard.henderson@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2023-02-27 09:15:38 +01:00
Thomas Huth
4376a770c7 target/s390x/arch_dump: Simplify memory allocation in s390x_write_elf64_notes()
We are not on a hot path here, so there is no real need for the logic
here with the split heap and stack space allocation. Simplify it by
always allocating memory from the heap.

Suggested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230215085703.746788-1-thuth@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2023-02-27 09:15:38 +01:00
Thomas Huth
eb60026120 target/s390x/arch_dump: Fix memory corruption in s390x_write_elf64_notes()
"note_size" can be smaller than sizeof(note), so unconditionally calling
memset(notep, 0, sizeof(note)) could cause a memory corruption here in
case notep has been allocated dynamically, thus let's use note_size as
length argument for memset() instead.

Reported-by: Sebastian Mitterle <smitterl@redhat.com>
Fixes: 113d8f4e95 ("s390x: pv: Add dump support")
Message-Id: <20230214141056.680969-1-thuth@redhat.com>
Reviewed-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2023-02-27 09:15:38 +01:00
Richard Henderson
b5deff74d1 target/s390x: Implement CC_OP_NZ in gen_op_calc_cc
This case is trivial to implement inline.

Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-02-04 06:19:43 -10:00
Richard Henderson
1fcd84fa0d target/s390x: Use tcg_gen_atomic_cmpxchg_i128 for CDSG
Acked-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-02-04 06:19:43 -10:00
Richard Henderson
2b91240f95 target/s390x: Use Int128 for passing float128
Acked-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
v2: Fix SPEC_in1_x1.
2023-02-04 06:19:43 -10:00
Richard Henderson
ee5e866fd2 target/s390x: Use Int128 for returning float128
Acked-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
v2: Remove extraneous return_low128.
2023-02-04 06:19:43 -10:00
Richard Henderson
f4031d9664 target/s390x: Copy wout_x1 to wout_x1_P
Make a copy of wout_x1 before modifying it, as wout_x1_P
emphasizing that it operates on the out/out2 pair.  The insns
that use x1_P are data movement that will not change to Int128.

Acked-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-02-04 06:19:43 -10:00
Richard Henderson
ef45f5b998 target/s390x: Use Int128 for return from TRE
Acked-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-02-04 06:19:42 -10:00
Richard Henderson
c91192245a target/s390x: Use Int128 for return from CKSM
Acked-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-02-04 06:19:42 -10:00
Richard Henderson
b71dd2a51e target/s390x: Use Int128 for return from CLST
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Acked-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-02-04 06:19:42 -10:00
Richard Henderson
4e5712f903 target/s390x: Use a single return for helper_divs64/u64
Pack the quotient and remainder into a single Int128.
Use the divu128 primitive to remove the cpu_abort on
32-bit hosts.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Acked-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
v2: Extended div test case to cover these insns.
2023-02-04 06:19:42 -10:00
Richard Henderson
6d28ff406c target/s390x: Use a single return for helper_divs32/u32
Pack the quotient and remainder into a single uint64_t.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
v2: Fix operand ordering; use tcg_extr32_i64.
2023-02-04 06:19:42 -10:00
Philippe Mathieu-Daudé
057733f2e5 target/s390x: Restrict sysemu/reset.h to system emulation
In user emulation, threads -- implemented as CPU -- are
created/destroyed, but never reset. There is no point in
allowing the user emulation access the sysemu/reset API.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20221220145625.26392-5-philmd@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2023-01-09 13:50:13 +01:00
Philippe Mathieu-Daudé
e4272df098 target/s390x/tcg/excp_helper: Restrict system headers to sysemu
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20221217152454.96388-6-philmd@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2023-01-09 13:50:13 +01:00
Philippe Mathieu-Daudé
983cec8810 target/s390x/tcg/misc_helper: Remove unused "memory.h" include
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20221217152454.96388-5-philmd@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2023-01-09 13:50:13 +01:00
Philippe Mathieu-Daudé
3ea7e31267 hw/s390x/pv: Restrict Protected Virtualization to sysemu
Protected Virtualization is irrelevant in user emulation.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20221217152454.96388-4-philmd@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2023-01-09 13:50:13 +01:00
Thomas Huth
3ef473e52e target/s390x: The MVCP and MVCS instructions are not privileged
The "MOVE TO PRIMARY/SECONDARY" instructions can also be called
from problem state. We just should properly check whether the
secondary-space access key is valid here, too, and inject a
privileged program exception if it is invalid.

Message-Id: <20221205125852.81848-1-thuth@redhat.com>
Reviewed-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2022-12-15 15:02:34 +01:00
Thomas Huth
5e275ca6fb target/s390x/tcg/mem_helper: Test the right bits in psw_key_valid()
The PSW key mask is a 16 bit field, and the psw_key variable is
in the range from 0 to 15, so it does not make sense to use
"0x80 >> psw_key" for testing the bits here. We should use 0x8000
instead.

Message-Id: <20221205142043.95185-1-thuth@redhat.com>
Reviewed-by: Nina Schoetterl-Glausch <nsg@linux.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2022-12-15 15:02:34 +01:00
Markus Armbruster
fe8ac1fa49 qapi machine: Elide redundant has_FOO in generated C
The has_FOO for pointer-valued FOO are redundant, except for arrays.
They are also a nuisance to work with.  Recent commit "qapi: Start to
elide redundant has_FOO in generated C" provided the means to elide
them step by step.  This is the step for qapi/machine*.json.

Said commit explains the transformation in more detail.  The invariant
violations mentioned there do not occur here.

Cc: Eduardo Habkost <eduardo@habkost.net>
Cc: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
Cc: Philippe Mathieu-Daudé <f4bug@amsat.org>
Cc: Yanan Wang <wangyanan55@huawei.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20221104160712.3005652-16-armbru@redhat.com>
2022-12-14 20:04:47 +01:00
Thomas Huth
21be74a9a5 target/s390x/tcg: Fix and improve the SACF instruction
The SET ADDRESS SPACE CONTROL FAST instruction is not privileged, it can be
used from problem space, too. Just the switching to the home address space
is privileged and should still generate a privilege exception. This bug is
e.g. causing programs like Java that use the "getcpu" vdso kernel function
to crash (see https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=990417#26 ).

While we're at it, also check if DAT is not enabled. In that case the
instruction is supposed to generate a special operation exception.

Resolves: https://gitlab.com/qemu-project/qemu/-/issues/655
Message-Id: <20221201184443.136355-1-thuth@redhat.com>
Reviewed-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2022-12-03 22:04:40 +01:00
Thomas Huth
44ee69ea16 s390x: Fix spelling errors
Fix typos (discovered with the 'codespell' utility).
Note: Though "migrateable" still seems to be a valid spelling, we change
it to "migratable" since this is the way more common spelling here.

Message-Id: <20221111182828.282251-1-thuth@redhat.com>
Reviewed-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2022-11-16 10:15:26 +01:00
Philippe Mathieu-Daudé
9cef8d9926 target/s390x: Rename insn-data/format.def -> insn-data/format.h.inc
We use the .h.inc extension to include C headers. To be consistent
with the rest of the codebase, rename the C headers using the .def
extension.

IDE/tools using our .editorconfig / .gitattributes will leverage
this consistency.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20221025235006.7215-3-philmd@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-11-05 20:35:45 +01:00
Stefan Hajnoczi
0d37413c63 testing and plugin updates for 7.2:
- cleanup win32/64 docker files
   - update test-mingw test
   - add flex/bison to debian-all-test
   - handle --enable-static/--disable-pie in config
   - extend timeouts on x86_64 avocado tests
   - add flex/bison to debian-hexagon-cross
   - use regular semihosting for nios2 check-tcg
   - fix obscure linker error to nios2 softmmu tests
   - various windows portability fixes for tests
   - clean-up of MAINTAINERS
   - use -machine none when appropriate in avocado
   - make raspi2_initrd test detect shutdown
   - disable sh4 rd2 tests on gitlab
   - re-enable threadcount/linux-test for sh4
   - clean-up s390x handling of "ex" instruction
   - better handle new CPUs in execlog plugin
   - pass CONFIG_DEBUG_TCG to plugin builds
   - try and avoid races in test-io-channel-command
   - speed up ssh key checking for tests/vm
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Merge tag 'pull-testing-for-7.2-011122-3' of https://github.com/stsquad/qemu into staging

testing and plugin updates for 7.2:

  - cleanup win32/64 docker files
  - update test-mingw test
  - add flex/bison to debian-all-test
  - handle --enable-static/--disable-pie in config
  - extend timeouts on x86_64 avocado tests
  - add flex/bison to debian-hexagon-cross
  - use regular semihosting for nios2 check-tcg
  - fix obscure linker error to nios2 softmmu tests
  - various windows portability fixes for tests
  - clean-up of MAINTAINERS
  - use -machine none when appropriate in avocado
  - make raspi2_initrd test detect shutdown
  - disable sh4 rd2 tests on gitlab
  - re-enable threadcount/linux-test for sh4
  - clean-up s390x handling of "ex" instruction
  - better handle new CPUs in execlog plugin
  - pass CONFIG_DEBUG_TCG to plugin builds
  - try and avoid races in test-io-channel-command
  - speed up ssh key checking for tests/vm

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# gpg: Signature made Tue 01 Nov 2022 09:49:39 EDT
# gpg:                using RSA key 6685AE99E75167BCAFC8DF35FBD0DB095A9E2A44
# gpg: Good signature from "Alex Bennée (Master Work Key) <alex.bennee@linaro.org>" [unknown]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 6685 AE99 E751 67BC AFC8  DF35 FBD0 DB09 5A9E 2A44

* tag 'pull-testing-for-7.2-011122-3' of https://github.com/stsquad/qemu: (31 commits)
  tests/vm: use -o IdentitiesOnly=yes for ssh
  tests/unit: cleanups for test-io-channel-command
  contrib/plugins: protect execlog's last_exec expansion
  contrib/plugins: enable debug on CONFIG_DEBUG_TCG
  tests/tcg: include CONFIG_PLUGIN in config-host.mak
  target/s390x: fake instruction loading when handling 'ex'
  target/s390x: don't probe next pc for EXecuted insns
  target/s390x: don't use ld_code2 to probe next pc
  tests/tcg: re-enable threadcount for sh4
  tests/tcg: re-enable linux-test for sh4
  tests/avocado: disable sh4 rd2 tests on Gitlab
  tests/avocado: raspi2_initrd: Wait for guest shutdown message before stopping
  tests/avocado: set -machine none for userfwd and vnc tests
  MAINTAINERS: fix-up for check-tcg Makefile changes
  MAINTAINERS: add features_to_c.sh to gdbstub files
  MAINTAINERS: add entries for the key build bits
  hw/usb: dev-mtp: Use g_mkdir()
  block/vvfat: Unify the mkdir() call
  tcg: Avoid using hardcoded /tmp
  semihosting/arm-compat-semi: Avoid using hardcoded /tmp
  ...

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2022-11-01 13:39:06 -04:00
Richard Henderson
3d419a4dd2 accel/tcg: Remove will_exit argument from cpu_restore_state
The value passed is always true, and if the target's
synchronize_from_tb hook is non-trivial, not exiting
may be erroneous.

Reviewed-by: Claudio Fontana <cfontana@suse.de>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-11-01 08:31:41 +11:00
Alex Bennée
9fa97e04ae target/s390x: fake instruction loading when handling 'ex'
The s390x EXecute instruction is a bit weird as we synthesis the
executed instruction from what we have stored in memory. This missed
the plugin instrumentation.

Work around this with a special helper to inform the rest of the
translator about the instruction so things stay consistent.

Reviewed-by: David Hildenbrand <david@redhat.com>
Acked-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Cc: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20221027183637.2772968-26-alex.bennee@linaro.org>
2022-10-31 20:37:59 +00:00
Alex Bennée
621aab6c7d target/s390x: don't probe next pc for EXecuted insns
We have finished the TB anyway so we can shortcut the other tests by
checking dc->ex_value first.

Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Acked-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20221027183637.2772968-25-alex.bennee@linaro.org>
2022-10-31 20:37:59 +00:00
Alex Bennée
efe7c4f08d target/s390x: don't use ld_code2 to probe next pc
This isn't an translator picking up an instruction so we shouldn't use
the translator_lduw function which has side effects for plugins.

Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Acked-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20221027183637.2772968-24-alex.bennee@linaro.org>
2022-10-31 20:37:59 +00:00
Thomas Huth
f7d81a351d target/s390x: Fix emulation of the VISTR instruction
The element size is encoded in the M3 field, not in the M4
field.

Fixes: be6324c6b7 ("s390x/tcg: Implement VECTOR ISOLATE STRING")
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1248
Message-Id: <20221012182755.1014853-3-thuth@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2022-10-27 09:09:50 +02:00
Stefan Hajnoczi
344744e148 dump queue
Hi
 
 The "dump" queue, with:
 - [PATCH v3/v4 0/9] dump: Cleanup and consolidation
 - [PATCH v4 0/4] dump: add 32-bit guest Windows support
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Merge tag 'dump-pull-request' of https://gitlab.com/marcandre.lureau/qemu into staging

dump queue

Hi

The "dump" queue, with:
- [PATCH v3/v4 0/9] dump: Cleanup and consolidation
- [PATCH v4 0/4] dump: add 32-bit guest Windows support

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# -----END PGP SIGNATURE-----
# gpg: Signature made Wed 26 Oct 2022 04:55:31 EDT
# gpg:                using RSA key 87A9BD933F87C606D276F62DDAE8E10975969CE5
# gpg:                issuer "marcandre.lureau@redhat.com"
# gpg: Good signature from "Marc-André Lureau <marcandre.lureau@redhat.com>" [full]
# gpg:                 aka "Marc-André Lureau <marcandre.lureau@gmail.com>" [full]
# Primary key fingerprint: 87A9 BD93 3F87 C606 D276  F62D DAE8 E109 7596 9CE5

* tag 'dump-pull-request' of https://gitlab.com/marcandre.lureau/qemu:
  dump/win_dump: limit number of processed PRCBs
  s390x: pv: Add dump support
  s390x: Add KVM PV dump interface
  include/elf.h: add s390x note types
  s390x: Introduce PV query interface
  s390x: Add protected dump cap
  dump: Add architecture section and section string table support
  dump: Reintroduce memory_offset and section_offset
  dump: Reorder struct DumpState
  dump: Write ELF section headers right after ELF header
  dump: Use a buffer for ELF section data and headers

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2022-10-26 10:53:49 -04:00
Stefan Hajnoczi
08a5d04606 Revert incorrect cflags initialization.
Add direct jumps for tcg/loongarch64.
 Speed up breakpoint check.
 Improve assertions for atomic.h.
 Move restore_state_to_opc to TCGCPUOps.
 Cleanups to TranslationBlock maintenance.
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Merge tag 'pull-tcg-20221026' of https://gitlab.com/rth7680/qemu into staging

Revert incorrect cflags initialization.
Add direct jumps for tcg/loongarch64.
Speed up breakpoint check.
Improve assertions for atomic.h.
Move restore_state_to_opc to TCGCPUOps.
Cleanups to TranslationBlock maintenance.

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# gpg: Signature made Tue 25 Oct 2022 22:08:14 EDT
# gpg:                using RSA key 7A481E78868B4DB6A85A05C064DF38E8AF7E215F
# gpg:                issuer "richard.henderson@linaro.org"
# gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>" [full]
# Primary key fingerprint: 7A48 1E78 868B 4DB6 A85A  05C0 64DF 38E8 AF7E 215F

* tag 'pull-tcg-20221026' of https://gitlab.com/rth7680/qemu: (47 commits)
  accel/tcg: Remove restore_state_to_opc function
  target/xtensa: Convert to tcg_ops restore_state_to_opc
  target/tricore: Convert to tcg_ops restore_state_to_opc
  target/sparc: Convert to tcg_ops restore_state_to_opc
  target/sh4: Convert to tcg_ops restore_state_to_opc
  target/s390x: Convert to tcg_ops restore_state_to_opc
  target/rx: Convert to tcg_ops restore_state_to_opc
  target/riscv: Convert to tcg_ops restore_state_to_opc
  target/ppc: Convert to tcg_ops restore_state_to_opc
  target/openrisc: Convert to tcg_ops restore_state_to_opc
  target/nios2: Convert to tcg_ops restore_state_to_opc
  target/mips: Convert to tcg_ops restore_state_to_opc
  target/microblaze: Convert to tcg_ops restore_state_to_opc
  target/m68k: Convert to tcg_ops restore_state_to_opc
  target/loongarch: Convert to tcg_ops restore_state_to_opc
  target/i386: Convert to tcg_ops restore_state_to_opc
  target/hppa: Convert to tcg_ops restore_state_to_opc
  target/hexagon: Convert to tcg_ops restore_state_to_opc
  target/cris: Convert to tcg_ops restore_state_to_opc
  target/avr: Convert to tcg_ops restore_state_to_opc
  ...

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2022-10-26 10:53:41 -04:00
Janosch Frank
113d8f4e95 s390x: pv: Add dump support
Sometimes dumping a guest from the outside is the only way to get the
data that is needed. This can be the case if a dumping mechanism like
KDUMP hasn't been configured or data needs to be fetched at a specific
point. Dumping a protected guest from the outside without help from
fw/hw doesn't yield sufficient data to be useful. Hence we now
introduce PV dump support.

The PV dump support works by integrating the firmware into the dump
process. New Ultravisor calls are used to initiate the dump process,
dump cpu data, dump memory state and lastly complete the dump process.
The UV calls are exposed by KVM via the new KVM_PV_DUMP command and
its subcommands. The guest's data is fully encrypted and can only be
decrypted by the entity that owns the customer communication key for
the dumped guest. Also dumping needs to be allowed via a flag in the
SE header.

On the QEMU side of things we store the PV dump data in the newly
introduced architecture ELF sections (storage state and completion
data) and the cpu notes (for cpu dump data).

Users can use the zgetdump tool to convert the encrypted QEMU dump to an
unencrypted one.

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Steffen Eiden <seiden@linux.ibm.com>
Message-Id: <20221017083822.43118-11-frankja@linux.ibm.com>
2022-10-26 12:54:59 +04:00
Janosch Frank
ad3b2e693d s390x: Add protected dump cap
Add a protected dump capability for later feature checking.

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Steffen Eiden <seiden@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Janis Schoetterl-Glausch <scgl@linux.ibm.com>
Message-Id: <20221017083822.43118-7-frankja@linux.ibm.com>
[ Marc-André - Add missing stubs when !kvm ]
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
2022-10-26 12:54:30 +04:00
Richard Henderson
3479783b39 target/s390x: Convert to tcg_ops restore_state_to_opc
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-10-26 11:11:28 +10:00
Markus Armbruster
0a553c12c7 Drop useless casts from g_malloc() & friends to pointer
These memory allocation functions return void *, and casting to
another pointer type is useless clutter.  Drop these casts.

If you really want another pointer type, consider g_new().

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20220923120025.448759-3-armbru@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-10-22 23:15:40 +02:00
Stefan Hajnoczi
bb76f8e275 * scsi-disk: support setting CD-ROM block size via device options
* target/i386: Implement MSR_CORE_THREAD_COUNT MSR
 * target/i386: notify VM exit support
 * target/i386: PC-relative translation block support
 * target/i386: support for XSAVE state in signal frames (linux-user)
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Merge tag 'for-upstream' of https://gitlab.com/bonzini/qemu into staging

* scsi-disk: support setting CD-ROM block size via device options
* target/i386: Implement MSR_CORE_THREAD_COUNT MSR
* target/i386: notify VM exit support
* target/i386: PC-relative translation block support
* target/i386: support for XSAVE state in signal frames (linux-user)

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# -----END PGP SIGNATURE-----
# gpg: Signature made Tue 11 Oct 2022 04:27:42 EDT
# gpg:                using RSA key F13338574B662389866C7682BFFBD25F78C7AE83
# gpg:                issuer "pbonzini@redhat.com"
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" [full]
# gpg:                 aka "Paolo Bonzini <pbonzini@redhat.com>" [full]
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4  E2F7 7E15 100C CD36 69B1
#      Subkey fingerprint: F133 3857 4B66 2389 866C  7682 BFFB D25F 78C7 AE83

* tag 'for-upstream' of https://gitlab.com/bonzini/qemu: (37 commits)
  linux-user: i386/signal: support XSAVE/XRSTOR for signal frame fpstate
  linux-user: i386/signal: support FXSAVE fpstate on 32-bit emulation
  linux-user: i386/signal: move fpstate at the end of the 32-bit frames
  KVM: x86: Implement MSR_CORE_THREAD_COUNT MSR
  i386: kvm: Add support for MSR filtering
  x86: Implement MSR_CORE_THREAD_COUNT MSR
  target/i386: Enable TARGET_TB_PCREL
  target/i386: Inline gen_jmp_im
  target/i386: Add cpu_eip
  target/i386: Create eip_cur_tl
  target/i386: Merge gen_jmp_tb and gen_goto_tb into gen_jmp_rel
  target/i386: Remove MemOp argument to gen_op_j*_ecx
  target/i386: Use gen_jmp_rel for DISAS_TOO_MANY
  target/i386: Use gen_jmp_rel for gen_jcc
  target/i386: Use gen_jmp_rel for loop, repz, jecxz insns
  target/i386: Create gen_jmp_rel
  target/i386: Use DISAS_TOO_MANY to exit after gen_io_start
  target/i386: Create eip_next_*
  target/i386: Truncate values for lcall_real to i32
  target/i386: Introduce DISAS_JUMP
  ...

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2022-10-13 13:55:03 -04:00
Paolo Bonzini
3dba0a335c kvm: allow target-specific accelerator properties
Several hypervisor capabilities in KVM are target-specific.  When exposed
to QEMU users as accelerator properties (i.e. -accel kvm,prop=value), they
should not be available for all targets.

Add a hook for targets to add their own properties to -accel kvm, for
now no such property is defined.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20220929072014.20705-3-chenyi.qiang@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-10-10 09:23:16 +02:00
Janosch Frank
1af0006ab9 dump: Replace opaque DumpState pointer with a typed one
It's always better to convey the type of a pointer if at all
possible. So let's add the DumpState typedef to typedefs.h and move
the dump note functions from the opaque pointers to DumpState
pointers.

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
CC: Peter Maydell <peter.maydell@linaro.org>
CC: Cédric Le Goater <clg@kaod.org>
CC: Daniel Henrique Barboza <danielhb413@gmail.com>
CC: David Gibson <david@gibson.dropbear.id.au>
CC: Greg Kurz <groug@kaod.org>
CC: Palmer Dabbelt <palmer@dabbelt.com>
CC: Alistair Francis <alistair.francis@wdc.com>
CC: Bin Meng <bin.meng@windriver.com>
CC: Cornelia Huck <cohuck@redhat.com>
CC: Thomas Huth <thuth@redhat.com>
CC: Richard Henderson <richard.henderson@linaro.org>
CC: David Hildenbrand <david@redhat.com>
Acked-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20220811121111.9878-2-frankja@linux.ibm.com>
2022-10-06 19:30:43 +04:00
Richard Henderson
e4fdf9df5b hw/core: Add CPUClass.get_pc
Populate this new method for all targets.  Always match
the result that would be given by cpu_get_tb_cpu_state,
as we will want these values to correspond in the logs.

Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> (target/sparc)
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
Cc: Eduardo Habkost <eduardo@habkost.net> (supporter:Machine core)
Cc: Marcel Apfelbaum <marcel.apfelbaum@gmail.com> (supporter:Machine core)
Cc: "Philippe Mathieu-Daudé" <f4bug@amsat.org> (reviewer:Machine core)
Cc: Yanan Wang <wangyanan55@huawei.com> (reviewer:Machine core)
Cc: Michael Rolnik <mrolnik@gmail.com> (maintainer:AVR TCG CPUs)
Cc: "Edgar E. Iglesias" <edgar.iglesias@gmail.com> (maintainer:CRIS TCG CPUs)
Cc: Taylor Simpson <tsimpson@quicinc.com> (supporter:Hexagon TCG CPUs)
Cc: Song Gao <gaosong@loongson.cn> (maintainer:LoongArch TCG CPUs)
Cc: Xiaojuan Yang <yangxiaojuan@loongson.cn> (maintainer:LoongArch TCG CPUs)
Cc: Laurent Vivier <laurent@vivier.eu> (maintainer:M68K TCG CPUs)
Cc: Jiaxun Yang <jiaxun.yang@flygoat.com> (reviewer:MIPS TCG CPUs)
Cc: Aleksandar Rikalo <aleksandar.rikalo@syrmia.com> (reviewer:MIPS TCG CPUs)
Cc: Chris Wulff <crwulff@gmail.com> (maintainer:NiosII TCG CPUs)
Cc: Marek Vasut <marex@denx.de> (maintainer:NiosII TCG CPUs)
Cc: Stafford Horne <shorne@gmail.com> (odd fixer:OpenRISC TCG CPUs)
Cc: Yoshinori Sato <ysato@users.sourceforge.jp> (reviewer:RENESAS RX CPUs)
Cc: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> (maintainer:SPARC TCG CPUs)
Cc: Bastian Koppelmann <kbastian@mail.uni-paderborn.de> (maintainer:TriCore TCG CPUs)
Cc: Max Filippov <jcmvbkbc@gmail.com> (maintainer:Xtensa TCG CPUs)
Cc: qemu-arm@nongnu.org (open list:ARM TCG CPUs)
Cc: qemu-ppc@nongnu.org (open list:PowerPC TCG CPUs)
Cc: qemu-riscv@nongnu.org (open list:RISC-V TCG CPUs)
Cc: qemu-s390x@nongnu.org (open list:S390 TCG CPUs)
2022-10-04 12:13:12 -07:00