Commit Graph

11873 Commits

Author SHA1 Message Date
Richard Henderson
7b7d8b2d9a tcg/tci: Use ffi for calls
This requires adjusting where arguments are stored.
Place them on the stack at left-aligned positions.
Adjust the stack frame to be at entirely positive offsets.

Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-06-19 08:51:11 -07:00
Richard Henderson
c7bb41b44a plugins: Drop tcg_flags from struct qemu_plugin_dyn_cb
As noted by qemu-plugins.h, enum qemu_plugin_cb_flags is
currently unused -- plugins can neither read nor write
guest registers.

Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-06-19 08:51:11 -07:00
Richard Henderson
7319d83a73 tcg: Combine dh_is_64bit and dh_is_signed to dh_typecode
We will shortly be interested in distinguishing pointers
from integers in the helper's declaration, as well as a
true void return.  We currently have two parallel 1 bit
fields; merge them and expand to a 3 bit field.

Our current maximum is 7 helper arguments, plus the return
makes 8 * 3 = 24 bits used within the uint32_t typemask.

Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-06-19 08:51:11 -07:00
Peter Maydell
b6d73e9cb1 * avoid deprecation warnings for SASL on macOS 10.11 or newer
* fix -readconfig when config blocks have an id (like [chardev "qmp"])
 * Error* initialization fixes
 * Improvements to ESP emulation (Mark)
 * Allow creating noreserve memory backends (David)
 * Improvements to query-memdev (David)
 * Bump compiler to C11 (Richard)
 * First round of SVM fixes from GSoC project (Lara)
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Merge remote-tracking branch 'remotes/bonzini-gitlab/tags/for-upstream' into staging

* avoid deprecation warnings for SASL on macOS 10.11 or newer
* fix -readconfig when config blocks have an id (like [chardev "qmp"])
* Error* initialization fixes
* Improvements to ESP emulation (Mark)
* Allow creating noreserve memory backends (David)
* Improvements to query-memdev (David)
* Bump compiler to C11 (Richard)
* First round of SVM fixes from GSoC project (Lara)

# gpg: Signature made Wed 16 Jun 2021 16:37:49 BST
# 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

* remotes/bonzini-gitlab/tags/for-upstream: (45 commits)
  configure: Remove probe for _Static_assert
  qemu/compiler: Remove QEMU_GENERIC
  include/qemu/lockable: Use _Generic instead of QEMU_GENERIC
  util: Use unique type for QemuRecMutex in thread-posix.h
  util: Pass file+line to qemu_rec_mutex_unlock_impl
  util: Use real functions for thread-posix QemuRecMutex
  softfloat: Use _Generic instead of QEMU_GENERIC
  configure: Use -std=gnu11
  target/i386: Added Intercept CR0 writes check
  target/i386: Added consistency checks for CR0
  target/i386: Added consistency checks for VMRUN intercept and ASID
  target/i386: Refactored intercept checks into cpu_svm_has_intercept
  configure: map x32 to cpu_family x86_64 for meson
  hmp: Print "reserve" property of memory backends with "info memdev"
  qmp: Include "reserve" property of memory backends
  hmp: Print "share" property of memory backends with "info memdev"
  qmp: Include "share" property of memory backends
  qmp: Clarify memory backend properties returned via query-memdev
  hostmem: Wire up RAM_NORESERVE via "reserve" property
  util/mmap-alloc: Support RAM_NORESERVE via MAP_NORESERVE under Linux
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-06-17 15:43:26 +01:00
Peter Maydell
18e53dff93 Change to -std=gnu11.
Replace QEMU_GENERIC with _Generic.
 Remove configure detect of _Static_assert.
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Merge remote-tracking branch 'remotes/rth-gitlab/tags/pull-c11-20210615' into staging

Change to -std=gnu11.
Replace QEMU_GENERIC with _Generic.
Remove configure detect of _Static_assert.

# gpg: Signature made Wed 16 Jun 2021 02:32:32 BST
# 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

* remotes/rth-gitlab/tags/pull-c11-20210615:
  configure: Remove probe for _Static_assert
  qemu/compiler: Remove QEMU_GENERIC
  include/qemu/lockable: Use _Generic instead of QEMU_GENERIC
  util: Use unique type for QemuRecMutex in thread-posix.h
  util: Pass file+line to qemu_rec_mutex_unlock_impl
  util: Use real functions for thread-posix QemuRecMutex
  softfloat: Use _Generic instead of QEMU_GENERIC
  configure: Use -std=gnu11

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-06-17 10:42:57 +01:00
Peter Maydell
38848ce565 target-arm queue:
* hw/intc/arm_gicv3_cpuif: Tolerate spurious EOIR writes
  * handle some UNALLOCATED decode cases correctly rather
    than asserting
  * hw: virt: consider hw_compat_6_0
  * hw/arm: add quanta-gbs-bmc machine
  * hw/intc/armv7m_nvic: Remove stale comment
  * target/arm: Fix mte page crossing test
  * hw/arm: quanta-q71l add pca954x muxes
  * target/arm: First few parts of MVE support
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Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20210616' into staging

target-arm queue:
 * hw/intc/arm_gicv3_cpuif: Tolerate spurious EOIR writes
 * handle some UNALLOCATED decode cases correctly rather
   than asserting
 * hw: virt: consider hw_compat_6_0
 * hw/arm: add quanta-gbs-bmc machine
 * hw/intc/armv7m_nvic: Remove stale comment
 * target/arm: Fix mte page crossing test
 * hw/arm: quanta-q71l add pca954x muxes
 * target/arm: First few parts of MVE support

# gpg: Signature made Wed 16 Jun 2021 14:34:49 BST
# gpg:                using RSA key E1A5C593CD419DE28E8315CF3C2525ED14360CDE
# gpg:                issuer "peter.maydell@linaro.org"
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>" [ultimate]
# gpg:                 aka "Peter Maydell <pmaydell@gmail.com>" [ultimate]
# gpg:                 aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>" [ultimate]
# Primary key fingerprint: E1A5 C593 CD41 9DE2 8E83  15CF 3C25 25ED 1436 0CDE

* remotes/pmaydell/tags/pull-target-arm-20210616: (25 commits)
  include/qemu/int128.h: Add function to create Int128 from int64_t
  bitops.h: Provide hswap32(), hswap64(), wswap64() swapping operations
  target/arm: Move expand_pred_b() data to vec_helper.c
  target/arm: Add framework for MVE decode
  target/arm: Implement MVE LETP insn
  target/arm: Implement MVE DLSTP
  target/arm: Implement MVE WLSTP insn
  target/arm: Implement MVE LCTP
  target/arm: Let vfp_access_check() handle late NOCP checks
  target/arm: Add handling for PSR.ECI/ICI
  target/arm: Handle VPR semantics in existing code
  target/arm: Enable FPSCR.QC bit for MVE
  target/arm: Provide and use H8 and H1_8 macros
  hw/arm: quanta-q71l add pca954x muxes
  hw/arm: gsj add pca9548
  hw/arm: gsj add i2c comments
  target/arm: Fix mte page crossing test
  hw/intc/armv7m_nvic: Remove stale comment
  hw/arm: quanta-gbs-bmc add i2c comments
  hw/arm: add quanta-gbs-bmc machine
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-06-16 17:02:30 +01:00
Peter Maydell
703235a303 include/qemu/int128.h: Add function to create Int128 from int64_t
int128_make64() creates an Int128 from an unsigned 64 bit value; add
a function int128_makes64() creating an Int128 from a signed 64 bit
value.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20210614151007.4545-34-peter.maydell@linaro.org
2021-06-16 14:33:52 +01:00
Peter Maydell
dbcf6f9367 bitops.h: Provide hswap32(), hswap64(), wswap64() swapping operations
Currently the ARM SVE helper code defines locally some utility
functions for swapping 16-bit halfwords within 32-bit or 64-bit
values and for swapping 32-bit words within 64-bit values,
parallel to the byte-swapping bswap16/32/64 functions.

We want these also for the ARM MVE code, and they're potentially
generally useful for other targets, so move them to bitops.h.
(We don't put them in bswap.h with the bswap* functions because
they are implemented in terms of the rotate operations also
defined in bitops.h, and including bitops.h from bswap.h seems
better avoided.)

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20210614151007.4545-17-peter.maydell@linaro.org
2021-06-16 14:33:52 +01:00
Richard Henderson
f51f8e3591 configure: Remove probe for _Static_assert
_Static_assert is part of C11, which is now required.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20210614233143.1221879-9-richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-06-16 15:03:26 +02:00
Richard Henderson
de51d8cbf0 qemu/compiler: Remove QEMU_GENERIC
All previous users now use C11 _Generic.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20210614233143.1221879-8-richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-06-16 15:03:26 +02:00
Richard Henderson
23c9b7e0f3 include/qemu/lockable: Use _Generic instead of QEMU_GENERIC
This is both more and less complicated than our expansion
using __builtin_choose_expr and __builtin_types_compatible_p.

The expansion through QEMU_MAKE_LOCKABLE_ doesn't work because
we're not emumerating all of the types within the same _Generic,
which results in errors about unhandled cases.  We must also
handle void* explicitly, so that the NULL constant can be used.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Tested-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20210614233143.1221879-7-richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-06-16 15:03:26 +02:00
Richard Henderson
dc41737844 util: Use unique type for QemuRecMutex in thread-posix.h
We will shortly convert lockable.h to _Generic, and we cannot
have two compatible types in the same expansion.  Wrap QemuMutex
in a struct, and unwrap in qemu-thread-posix.c.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20210614233143.1221879-6-richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-06-16 15:03:26 +02:00
Richard Henderson
d3192460bf util: Pass file+line to qemu_rec_mutex_unlock_impl
Create macros for file+line expansion in qemu_rec_mutex_unlock
like we have for qemu_mutex_unlock.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210614233143.1221879-5-richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-06-16 15:03:26 +02:00
Richard Henderson
5d63bd5aad util: Use real functions for thread-posix QemuRecMutex
Move the declarations from thread-win32.h into thread.h
and remove the macro redirection from thread-posix.h.
This will be required by following cleanups.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20210614233143.1221879-4-richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-06-16 15:03:26 +02:00
Richard Henderson
c7a7cb5692 configure: Remove probe for _Static_assert
_Static_assert is part of C11, which is now required.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20210614233143.1221879-9-richard.henderson@linaro.org>
2021-06-15 18:31:00 -07:00
Richard Henderson
8bae43fa1a qemu/compiler: Remove QEMU_GENERIC
All previous users now use C11 _Generic.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20210614233143.1221879-8-richard.henderson@linaro.org>
2021-06-15 18:31:00 -07:00
Richard Henderson
4ffb0681d7 include/qemu/lockable: Use _Generic instead of QEMU_GENERIC
This is both more and less complicated than our expansion
using __builtin_choose_expr and __builtin_types_compatible_p.

The expansion through QEMU_MAKE_LOCKABLE_ doesn't work because
we're not emumerating all of the types within the same _Generic,
which results in errors about unhandled cases.  We must also
handle void* explicitly, so that the NULL constant can be used.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20210614233143.1221879-7-richard.henderson@linaro.org>
2021-06-15 18:31:00 -07:00
Richard Henderson
6c98635ed7 util: Use unique type for QemuRecMutex in thread-posix.h
We will shortly convert lockable.h to _Generic, and we cannot
have two compatible types in the same expansion.  Wrap QemuMutex
in a struct, and unwrap in qemu-thread-posix.c.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20210614233143.1221879-6-richard.henderson@linaro.org>
2021-06-15 18:31:00 -07:00
Richard Henderson
9c75bae717 util: Pass file+line to qemu_rec_mutex_unlock_impl
Create macros for file+line expansion in qemu_rec_mutex_unlock
like we have for qemu_mutex_unlock.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20210614233143.1221879-5-richard.henderson@linaro.org>
2021-06-15 18:31:00 -07:00
Richard Henderson
4b193bb798 util: Use real functions for thread-posix QemuRecMutex
Move the declarations from thread-win32.h into thread.h
and remove the macro redirection from thread-posix.h.
This will be required by following cleanups.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20210614233143.1221879-4-richard.henderson@linaro.org>
2021-06-15 18:31:00 -07:00
David Hildenbrand
9181fb7043 hostmem: Wire up RAM_NORESERVE via "reserve" property
Let's provide a way to control the use of RAM_NORESERVE via memory
backends using the "reserve" property which defaults to true (old
behavior).

Only Linux currently supports clearing the flag (and support is checked at
runtime, depending on the setting of "/proc/sys/vm/overcommit_memory").
Windows and other POSIX systems will bail out with "reserve=false".

The target use case is virtio-mem, which dynamically exposes memory
inside a large, sparse memory area to the VM. This essentially allows
avoiding to set "/proc/sys/vm/overcommit_memory == 0") when using
virtio-mem and also supporting hugetlbfs in the future.

As really only Linux implements RAM_NORESERVE right now, let's expose
the property only with CONFIG_LINUX. Setting the property to "false"
will then only fail in corner cases -- for example on very old kernels
or when memory overcommit was completely disabled by the admin.

Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Eduardo Habkost <ehabkost@redhat.com> for memory backend and machine core
Cc: Markus Armbruster <armbru@redhat.com>
Cc: Eric Blake <eblake@redhat.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20210510114328.21835-11-david@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-06-15 20:27:38 +02:00
David Hildenbrand
d94e0bc9ef util/mmap-alloc: Support RAM_NORESERVE via MAP_NORESERVE under Linux
Let's support RAM_NORESERVE via MAP_NORESERVE on Linux. The flag has no
effect on most shared mappings - except for hugetlbfs and anonymous memory.

Linux man page:
  "MAP_NORESERVE: Do not reserve swap space for this mapping. When swap
  space is reserved, one has the guarantee that it is possible to modify
  the mapping. When swap space is not reserved one might get SIGSEGV
  upon a write if no physical memory is available. See also the discussion
  of the file /proc/sys/vm/overcommit_memory in proc(5). In kernels before
  2.6, this flag had effect only for private writable mappings."

Note that the "guarantee" part is wrong with memory overcommit in Linux.

Also, in Linux hugetlbfs is treated differently - we configure reservation
of huge pages from the pool, not reservation of swap space (huge pages
cannot be swapped).

The rough behavior is [1]:
a) !Hugetlbfs:

  1) Without MAP_NORESERVE *or* with memory overcommit under Linux
     disabled ("/proc/sys/vm/overcommit_memory == 2"), the following
     accounting/reservation happens:
      For a file backed map
       SHARED or READ-only - 0 cost (the file is the map not swap)
       PRIVATE WRITABLE - size of mapping per instance

      For an anonymous or /dev/zero map
       SHARED   - size of mapping
       PRIVATE READ-only - 0 cost (but of little use)
       PRIVATE WRITABLE - size of mapping per instance

  2) With MAP_NORESERVE, no accounting/reservation happens.

b) Hugetlbfs:

  1) Without MAP_NORESERVE, huge pages are reserved.

  2) With MAP_NORESERVE, no huge pages are reserved.

Note: With "/proc/sys/vm/overcommit_memory == 0", we were already able
to configure it for !hugetlbfs globally; this toggle now allows
configuring it more fine-grained, not for the whole system.

The target use case is virtio-mem, which dynamically exposes memory
inside a large, sparse memory area to the VM.

[1] https://www.kernel.org/doc/Documentation/vm/overcommit-accounting

Reviewed-by: Peter Xu <peterx@redhat.com>
Acked-by: Eduardo Habkost <ehabkost@redhat.com> for memory backend and machine core
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20210510114328.21835-10-david@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-06-15 20:27:38 +02:00
David Hildenbrand
8dbe22c686 memory: Introduce RAM_NORESERVE and wire it up in qemu_ram_mmap()
Let's introduce RAM_NORESERVE, allowing mmap'ing with MAP_NORESERVE. The
new flag has the following semantics:

"
RAM is mmap-ed with MAP_NORESERVE. When set, reserving swap space (or huge
pages if applicable) is skipped: will bail out if not supported. When not
set, the OS will do the reservation, if supported for the memory type.
"

Allow passing it into:
- memory_region_init_ram_nomigrate()
- memory_region_init_resizeable_ram()
- memory_region_init_ram_from_file()

... and teach qemu_ram_mmap() and qemu_anon_ram_alloc() about the flag.
Bail out if the flag is not supported, which is the case right now for
both, POSIX and win32. We will add Linux support next and allow specifying
RAM_NORESERVE via memory backends.

The target use case is virtio-mem, which dynamically exposes memory
inside a large, sparse memory area to the VM.

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Acked-by: Eduardo Habkost <ehabkost@redhat.com> for memory backend and machine core
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20210510114328.21835-9-david@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-06-15 20:27:38 +02:00
David Hildenbrand
b444f5c079 util/mmap-alloc: Pass flags instead of separate bools to qemu_ram_mmap()
Let's pass flags instead of bools to prepare for passing other flags and
update the documentation of qemu_ram_mmap(). Introduce new QEMU_MAP_
flags that abstract the mmap() PROT_ and MAP_ flag handling and simplify
it.

We expose only flags that are currently supported by qemu_ram_mmap().
Maybe, we'll see qemu_mmap() in the future as well that can implement these
flags.

Note: We don't use MAP_ flags as some flags (e.g., MAP_SYNC) are only
defined for some systems and we want to always be able to identify
these flags reliably inside qemu_ram_mmap() -- for example, to properly
warn when some future flags are not available or effective on a system.
Also, this way we can simplify PROT_ handling as well.

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Acked-by: Eduardo Habkost <ehabkost@redhat.com> for memory backend and machine core
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20210510114328.21835-8-david@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-06-15 20:27:38 +02:00
David Hildenbrand
ebef62d0e5 softmmu/memory: Pass ram_flags to qemu_ram_alloc() and qemu_ram_alloc_internal()
Let's pass ram_flags to qemu_ram_alloc() and qemu_ram_alloc_internal(),
preparing for passing additional flags.

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Acked-by: Eduardo Habkost <ehabkost@redhat.com> for memory backend and machine core
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20210510114328.21835-7-david@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-06-15 20:27:38 +02:00
David Hildenbrand
7f863cba4d softmmu/memory: Pass ram_flags to memory_region_init_ram_shared_nomigrate()
Let's forward ram_flags instead, renaming
memory_region_init_ram_shared_nomigrate() into
memory_region_init_ram_flags_nomigrate().

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Acked-by: Eduardo Habkost <ehabkost@redhat.com> for memory backend and machine core
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20210510114328.21835-6-david@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-06-15 20:27:38 +02:00
David Hildenbrand
d5015b8013 softmmu/memory: Pass ram_flags to qemu_ram_alloc_from_fd()
Let's pass in ram flags just like we do with qemu_ram_alloc_from_file(),
to clean up and prepare for more flags.

Simplify the documentation of passed ram flags: Looking at our
documentation of RAM_SHARED and RAM_PMEM is sufficient, no need to be
repetitive.

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Acked-by: Eduardo Habkost <ehabkost@redhat.com> for memory backend and machine core
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20210510114328.21835-5-david@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-06-15 20:27:38 +02:00
David Hildenbrand
cdfa56c551 softmmu/physmem: Fix ram_block_discard_range() to handle shared anonymous memory
We can create shared anonymous memory via
    "-object memory-backend-ram,share=on,..."
which is, for example, required by PVRDMA for mremap() to work.

Shared anonymous memory is weird, though. Instead of MADV_DONTNEED, we
have to use MADV_REMOVE: MADV_DONTNEED will only remove / zap all
relevant page table entries of the current process, the backend storage
will not get removed, resulting in no reduced memory consumption and
a repopulation of previous content on next access.

Shared anonymous memory is internally really just shmem, but without a
fd exposed. As we cannot use fallocate() without the fd to discard the
backing storage, MADV_REMOVE gets the same job done without a fd as
documented in "man 2 madvise". Removing backing storage implicitly
invalidates all page table entries with relevant mappings - an additional
MADV_DONTNEED is not required.

Fixes: 06329ccecf ("mem: add share parameter to memory-backend-ram")
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20210406080126.24010-3-david@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-06-15 20:27:37 +02:00
Paolo Bonzini
4eb8606560 esp: store lun coming from the MESSAGE OUT phase
The LUN is selected with an IDENTIFY message, and persists
until the next message out phase.  Instead of passing it to
do_busid_cmd, store it in ESPState.  Because do_cmd can simply
skip the message out phase if cmdfifo_cdb_offset is zero, it
can now be used for the S without ATN cases as well.

Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-06-15 17:17:09 +02:00
Stefan Berger
e542b71805 sysemu: Make TPM structures inaccessible if CONFIG_TPM is not defined
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210614191335.1968807-5-stefanb@linux.ibm.com>
[PMD: Remove tpm_init() / tpm_cleanup() stubs]
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2021-06-15 10:55:12 -04:00
Stefan Berger
295f7dcb60 acpi: Eliminate all TPM related code if CONFIG_TPM is not set
Cc: M: Michael S. Tsirkin <mst@redhat.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210614191335.1968807-4-stefanb@linux.ibm.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2021-06-15 10:55:03 -04:00
Richard Henderson
a14b3ad11a tcg: Fix documentation for tcg_constant_* vs tcg_temp_free_*
At some point during the development of tcg_constant_*, I changed
my mind about whether such temps should be able to be passed to
tcg_temp_free_*.  The final version committed allows this, but the
commentary was not updated to match.

Fixes: c0522136ad
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-06-13 17:42:40 -07:00
Richard Henderson
a80cdd3183 tcg: Introduce tcg_remove_ops_after
Introduce a function to remove everything emitted
since a given point.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-06-13 17:42:40 -07:00
Richard Henderson
42eb6dfcf1 tcg: Move tcg_init_ctx and tcg_ctx from accel/tcg/
These variables belong to the jit side, not the user side.

Since tcg_init_ctx is no longer used outside of tcg/, move
the declaration to tcg-internal.h.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Suggested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-06-13 17:42:40 -07:00
Richard Henderson
d7107fc00a util/osdep: Add qemu_mprotect_rw
For --enable-tcg-interpreter on Windows, we will need this.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-06-13 17:42:40 -07:00
Richard Henderson
47d590df34 tcg: Move in_code_gen_buffer and tests to region.c
Shortly, the full code_gen_buffer will only be visible
to region.c, so move in_code_gen_buffer out-of-line.

Move the debugging versions of tcg_splitwx_to_{rx,rw}
to region.c as well, so that the compiler gets to see
the implementation of in_code_gen_buffer.

This leaves exactly one use of in_code_gen_buffer outside
of region.c, in cpu_restore_state.  Which, being on the
exception path, is not performance critical.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-06-11 09:27:08 -07:00
Richard Henderson
43b972b7eb accel/tcg: Pass down max_cpus to tcg_init
Start removing the include of hw/boards.h from tcg/.
Pass down the max_cpus value from tcg_init_machine,
where we have the MachineState already.

Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-06-11 09:27:08 -07:00
Richard Henderson
fa79cde6ed accel/tcg: Merge tcg_exec_init into tcg_init_machine
There is only one caller, and shortly we will need access
to the MachineState, which tcg_init_machine already has.

Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-06-11 09:26:28 -07:00
Richard Henderson
a76aabd37b tcg: Create tcg_init
Perform both tcg_context_init and tcg_region_init.
Do not leave this split to the caller.

Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-06-11 09:26:28 -07:00
Richard Henderson
c46184a90a accel/tcg: Move alloc_code_gen_buffer to tcg/region.c
Buffer management is integral to tcg.  Do not leave the allocation
to code outside of tcg/.  This is code movement, with further
cleanups to follow.

Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-06-11 09:26:28 -07:00
Jason Wang
1b03117211 vhost-vdpa: remove the unused vhost_vdpa_get_acked_features()
No user for this helper, let's remove it.

Signed-off-by: Jason Wang <jasowang@redhat.com>
2021-06-11 10:30:13 +08:00
Jason Wang
d0416d487b vhost-vdpa: map virtqueue notification area if possible
This patch implements the vq notification mapping support for
vhost-vDPA. This is simply done by using mmap()/munmap() for the
vhost-vDPA fd during device start/stop. For the device without
notification mapping support, we fall back to eventfd based
notification gracefully.

Reviewed-by: Si-Wei Liu <si-wei.liu@oracle.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
2021-06-11 10:30:13 +08:00
Peter Xu
a4a571d978 hmp: Add "calc_dirty_rate" and "info dirty_rate" cmds
These two commands are missing when adding the QMP sister commands.
Add them, so developers can play with them easier.

Signed-off-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Hyman Huang(黄勇) <huangy81@chinatelecom.cn>
Message-Id: <4cc0039fc3ad6145136770cf3b0f056c09a2910b.1623027729.git.huangy81@chinatelecom.cn>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2021-06-08 20:18:26 +01:00
Peter Maydell
a4716fd8d7 Second RISC-V PR for QEMU 6.1
- Update the PLIC and CLINT DT bindings
  - Improve documentation for RISC-V machines
  - Support direct kernel boot for microchip_pfsoc
  - Fix WFI exception behaviour
  - Improve CSR printing
  - Initial support for the experimental Bit Manip extension
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Merge remote-tracking branch 'remotes/alistair/tags/pull-riscv-to-apply-20210608-1' into staging

Second RISC-V PR for QEMU 6.1

 - Update the PLIC and CLINT DT bindings
 - Improve documentation for RISC-V machines
 - Support direct kernel boot for microchip_pfsoc
 - Fix WFI exception behaviour
 - Improve CSR printing
 - Initial support for the experimental Bit Manip extension

# gpg: Signature made Tue 08 Jun 2021 01:28:27 BST
# gpg:                using RSA key F6C4AC46D4934868D3B8CE8F21E10D29DF977054
# gpg: Good signature from "Alistair Francis <alistair@alistair23.me>" [full]
# Primary key fingerprint: F6C4 AC46 D493 4868 D3B8  CE8F 21E1 0D29 DF97 7054

* remotes/alistair/tags/pull-riscv-to-apply-20210608-1: (32 commits)
  target/riscv: rvb: add b-ext version cpu option
  target/riscv: rvb: support and turn on B-extension from command line
  target/riscv: rvb: add/shift with prefix zero-extend
  target/riscv: rvb: address calculation
  target/riscv: rvb: generalized or-combine
  target/riscv: rvb: generalized reverse
  target/riscv: rvb: rotate (left/right)
  target/riscv: rvb: shift ones
  target/riscv: rvb: single-bit instructions
  target/riscv: add gen_shifti() and gen_shiftiw() helper functions
  target/riscv: rvb: sign-extend instructions
  target/riscv: rvb: min/max instructions
  target/riscv: rvb: pack two words into one register
  target/riscv: rvb: logic-with-negate
  target/riscv: rvb: count bits set
  target/riscv: rvb: count leading/trailing zeros
  target/riscv: reformat @sh format encoding for B-extension
  target/riscv: Pass the same value to oprsz and maxsz.
  target/riscv/pmp: Add assert for ePMP operations
  target/riscv: Dump CSR mscratch/sscratch/satp
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-06-08 13:54:23 +01:00
Bin Meng
a0acd0a175 hw/riscv: Use macros for BIOS image names
The OpenSBI BIOS image names are used by many RISC-V machines.
Let's define macros for them.

Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20210430071302.1489082-7-bmeng.cn@gmail.com
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2021-06-08 09:59:42 +10:00
Xie Yongji
df77d45a51 vhost-vdpa: Remove redundant declaration of address_space_memory
The symbol address_space_memory are already declared in
include/exec/address-spaces.h. So let's add this header file
and remove the redundant declaration in include/hw/virtio/vhost-vdpa.h.

Signed-off-by: Xie Yongji <xieyongji@bytedance.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Message-Id: <20210517123246.999-1-xieyongji@bytedance.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2021-06-05 21:33:46 +02:00
John Snow
d7878875ae docs: fix broken reference
Long story short, we need a space here for the reference to work
correctly.

Longer story:

Without the space, kerneldoc generates a line like this:

one of :c:type:`MemoryListener.region_add\(\) <MemoryListener>`,:c:type:`MemoryListener.region_del\(\)

Sphinx does not process the role information correctly, so we get this
(my pseudo-notation) construct:

<text>,:c:type:</text>
<reference target="MemoryListener">MemoryListener.region_del()</reference>

which does not reference the desired entity, and leaves some extra junk
in the rendered output. See
https://qemu-project.gitlab.io/qemu/devel/memory.html#c.MemoryListener
member log_start for an example of the broken output as it looks today.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20210511192950.2061326-1-jsnow@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2021-06-05 21:15:22 +02:00
Philippe Mathieu-Daudé
585190902a misc: Correct relative include path
Headers should be included from the 'include/' directory,
not from the root directory.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Message-Id: <20210516205034.694788-1-f4bug@amsat.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2021-06-05 21:10:42 +02:00
Peter Maydell
908a87706e * OpenBSD cleanup (Brad)
* fixes for the i386 accel/cpu refactoring (Claudio)
 * unmap test for emulated SCSI (Kit)
 * fix for iscsi module (myself)
 * fix for -readconfig of objects (myself)
 * fixes for x86 16-bit task switching (myself)
 * fix for x86 MOV from/to CR8 (Richard)
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Merge remote-tracking branch 'remotes/bonzini-gitlab/tags/for-upstream' into staging

* OpenBSD cleanup (Brad)
* fixes for the i386 accel/cpu refactoring (Claudio)
* unmap test for emulated SCSI (Kit)
* fix for iscsi module (myself)
* fix for -readconfig of objects (myself)
* fixes for x86 16-bit task switching (myself)
* fix for x86 MOV from/to CR8 (Richard)

# gpg: Signature made Fri 04 Jun 2021 12:53:32 BST
# 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

* remotes/bonzini-gitlab/tags/for-upstream:
  vl: plug -object back into -readconfig
  vl: plumb keyval-based options into -readconfig
  qemu-config: parse configuration files to a QDict
  i386: run accel_cpu_instance_init as post_init
  i386: reorder call to cpu_exec_realizefn
  tests/qtest/virtio-scsi-test: add unmap large LBA with 4k blocks test
  target/i386: Fix decode of cr8
  target/i386: tcg: fix switching from 16-bit to 32-bit tasks or vice versa
  target/i386: tcg: fix loading of registers from 16-bit TSS
  target/i386: tcg: fix segment register offsets for 16-bit TSS
  oslib-posix: Remove OpenBSD workaround for fcntl("/dev/null", F_SETFL, O_NONBLOCK) failure
  iscsi: link libm into the module
  meson: allow optional dependencies for block modules

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-06-04 17:27:29 +01:00
Peter Maydell
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 KG3MbyHsp7MkR3S4wHBkE9yrVDCziBibZvkxhhz1VpEHjRjNDoNbevotE5Gr43+N
 50D2TxRNVd6MjN7KGJOXQHc7t22OKb2/1fKTS1Pp+oGnDxHh63G6pGQ4LpC8wEjW
 2h49tcAWHQ4SafkDqyapXgTACHs4k4TV/zUg8cUDFtkAArawHppwYHoAXvz8kd8=
 =m1ZO
 -----END PGP SIGNATURE-----

Merge remote-tracking branch 'remotes/jasowang/tags/net-pull-request' into staging

# gpg: Signature made Fri 04 Jun 2021 08:26:16 BST
# gpg:                using RSA key EF04965B398D6211
# gpg: Good signature from "Jason Wang (Jason Wang on RedHat) <jasowang@redhat.com>" [marginal]
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg:          It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 215D 46F4 8246 689E C77F  3562 EF04 965B 398D 6211

* remotes/jasowang/tags/net-pull-request:
  MAINTAINERS: Added eBPF maintainers information.
  docs: Added eBPF documentation.
  virtio-net: Added eBPF RSS to virtio-net.
  ebpf: Added eBPF RSS loader.
  ebpf: Added eBPF RSS program.
  net: Added SetSteeringEBPF method for NetClientState.
  net/tap: Added TUNSETSTEERINGEBPF code.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-06-04 13:38:49 +01:00