Commit graph

1499 commits

Author SHA1 Message Date
Philippe Mathieu-Daudé
a9ca97ea9e accel/tcg: Un-inline translator_is_same_page()
Remove the single target-specific definition used in
"exec/translator.h" (TARGET_PAGE_MASK) by un-inlining
is_same_page().
Rename the method as translator_is_same_page() and
improve its documentation.
Use it in translator_use_goto_tb().

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20241218154145.71353-1-philmd@linaro.org>
2024-12-20 17:44:57 +01:00
Philippe Mathieu-Daudé
8865049bab accel/tcg: Move tcg_cflags_has/set() to 'exec/translation-block.h'
The TranslationBlock flags are defined in 'exec/translation-block.h'.
tcg_cflags_has/set() use them, it is more logical to declare them in
the same place. Move them there too.

Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20241212144430.66224-2-philmd@linaro.org>
2024-12-20 17:44:57 +01:00
Philippe Mathieu-Daudé
1760c5cce8 accel/tcg: Restrict curr_cflags() declaration to 'internal-common.h'
curr_cflags() is only used within accel/tcg/,
move its declaration to accel/tcg/internal-common.h.

Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20241216214030.59393-1-philmd@linaro.org>
2024-12-20 17:44:57 +01:00
Philippe Mathieu-Daudé
0ec02378e6 exec/translation-block: Include missing 'qemu/atomic.h' header
When moving tb_cflags() in commit 88d4b5138a ("tcg: Make
tb_cflags() usable from target-agnostic code") we forgot to
include "qemu/atomic.h", which declares qatomic_read().
Explicitly include it now to avoid issue when refactoring
unrelated headers.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Acked-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-Id: <20241217141326.98947-2-philmd@linaro.org>
2024-12-20 17:44:57 +01:00
Philippe Mathieu-Daudé
47f7b6441a accel/tcg: Declare cpu_loop_exit_requested() in 'exec/cpu-common.h'
Move cpu_loop_exit_requested() declaration to "exec/cpu-common.h",
along with the related cpu_loop_exit_noexc(), cpu_loop_exit(),
cpu_loop_exit_atomic() and cpu_loop_exit_restore() methods.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20241217140648.98538-1-philmd@linaro.org>
2024-12-20 17:44:57 +01:00
Philippe Mathieu-Daudé
5c09d295e0 exec/cpu-all: Include 'cpu.h' earlier so MMU_USER_IDX is always defined
Include "cpu.h" earlier to get the MMU_USER_IDX definition soon
enough and avoid when refactoring unrelated headers:

  In file included from include/exec/translator.h:271,
                   from ../../accel/tcg/translator.c:13:
  include/exec/cpu-all.h: In function ‘cpu_mmu_index’:
  include/exec/cpu-all.h:274:12: error: ‘MMU_USER_IDX’ undeclared (first use in this function)
    274 |     return MMU_USER_IDX;
        |            ^~~~~~~~~~~~
  include/exec/cpu-all.h:274:12: note: each undeclared identifier is reported only once for each function it appears in
  ninja: build stopped: subcommand failed.

We need to forward-declare cpu_mmu_index() to avoid on user emulation:

  In file included from include/exec/cpu-all.h:263,
                   from include/exec/translator.h:271,
                   from ../../accel/tcg/translator.c:13:
  ../../target/sparc/cpu.h: In function ‘cpu_get_tb_cpu_state’:
  ../../target/sparc/cpu.h:757:13: error: implicit declaration of function ‘cpu_mmu_index’ [-Werror=implicit-function-declaration]
    757 |     flags = cpu_mmu_index(env_cpu(env), false);
        |             ^~~~~~~~~~~~~

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20241218155202.71931-5-philmd@linaro.org>
2024-12-20 17:44:57 +01:00
Philippe Mathieu-Daudé
1bf0d6e476 user: Move various declarations out of 'exec/exec-all.h'
Move various declarations related to user emulation
from "exec/exec-all.h" to "user/cpu_loop.h".

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20241212185341.2857-19-philmd@linaro.org>
2024-12-20 17:44:57 +01:00
Philippe Mathieu-Daudé
f47dcf519d accel/tcg: Move user-related declarations out of 'exec/cpu-all.h' (4/4)
Move declarations related to page protection under user
emulation from "exec/cpu-all.h" to "user/page-protection.h".

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20241212185341.2857-15-philmd@linaro.org>
2024-12-20 17:44:57 +01:00
Philippe Mathieu-Daudé
187b7ca96a accel/tcg: Move user-related declarations out of 'exec/cpu-all.h' (3/4)
Move declarations related to page protection under user
emulation from "exec/cpu-all.h" to "user/page-protection.h".

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20241212185341.2857-14-philmd@linaro.org>
2024-12-20 17:44:57 +01:00
Philippe Mathieu-Daudé
62ef949bbc accel/tcg: Move user-related declarations out of 'exec/cpu-all.h' (2/4)
Move declarations related to page protection under user
emulation from "exec/cpu-all.h" to "user/page-protection.h".

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20241212185341.2857-13-philmd@linaro.org>
2024-12-20 17:44:57 +01:00
Philippe Mathieu-Daudé
970ae60e9b accel/tcg: Move user-related declarations out of 'exec/cpu-all.h' (1/4)
Move declarations related to page protection under user
emulation from "exec/cpu-all.h" to "user/page-protection.h".

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20241212185341.2857-12-philmd@linaro.org>
2024-12-20 17:44:57 +01:00
Philippe Mathieu-Daudé
93ef2c2f15 accel/tcg: Move 'exec/translate-all.h' -> 'tb-internal.h'
"exec/translate-all.h" is only useful to TCG accelerator,
so move it to accel/tcg/, after renaming it 'tb-internal.h'.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20241212185341.2857-9-philmd@linaro.org>
2024-12-20 17:44:57 +01:00
Philippe Mathieu-Daudé
634f1455fc accel/tcg: Move page_[un]protect() to 'user/page-protection.h'
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20241212185341.2857-7-philmd@linaro.org>
2024-12-20 17:44:57 +01:00
Philippe Mathieu-Daudé
384fd3543b accel/tcg: Use tb_page_addr_t type in page_unprotect()
Match with the page_protect() prototype, use a tb_page_addr_t
argument instead of target_ulong.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20241212185341.2857-6-philmd@linaro.org>
2024-12-20 17:44:57 +01:00
Philippe Mathieu-Daudé
487a31e0ac accel/tcg: Declare mmap_[un]lock() in 'exec/page-protection.h'
Move mmap_lock(), mmap_unlock() declarations and the
WITH_MMAP_LOCK_GUARD() definition to 'exec/page-protection.h'.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20241212185341.2857-5-philmd@linaro.org>
2024-12-20 17:44:57 +01:00
Philippe Mathieu-Daudé
975cb16cb5 exec/ram_addr: Include missing 'exec/hwaddr.h' and 'exec/cpu-common.h'
'hwaddr' is defined in "exec/hwaddr.h", 'ram_addr_t' in
"exec/cpu-common.h". Include these headers in order to
avoid when refactoring unrelated headers:

  In file included from ../../hw/s390x/s390-virtio-ccw.c:17:
  include/sysemu/physmem-target.h:37:24: error: unknown type name 'hwaddr'
     37 |     (MemoryRegion *mr, hwaddr offset, hwaddr length, unsigned client);
        |                        ^
  In file included from ../../hw/s390x/s390-virtio-ccw.c:16:
  include/exec/ram_addr.h:52:36: error: unknown type name 'ram_addr_t'
     52 | RAMBlock *qemu_ram_alloc_from_file(ram_addr_t size, MemoryRegion *mr,
        |                                    ^

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20241218155202.71931-4-philmd@linaro.org>
2024-12-20 17:44:57 +01:00
Philippe Mathieu-Daudé
f9ba56a03c user: Introduce 'user/guest-host.h' header
Extract all declarations related to 'guest from/to host'
address translation to a new "user/guest-host.h" header.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20241212185341.2857-2-philmd@linaro.org>
2024-12-20 17:44:56 +01:00
Philippe Mathieu-Daudé
4081f5a698 exec/translation-block: Include missing 'exec/vaddr.h' header
'vaddr' type is declared in "exec/vaddr.h".
"exec/translation-block.h" uses this type without including
the corresponding header. It works because this header is
indirectly included, but won't work when the other headers
are refactored:

  include/exec/translation-block.h:56:5: error: unknown type name 'vaddr'
     56 |     vaddr pc;
        |     ^

Explitly include "exec/vaddr.h" to avoid such problem in a
few commits.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20241114011310.3615-4-philmd@linaro.org>
2024-12-20 17:44:56 +01:00
Philippe Mathieu-Daudé
600c63d4dc exec/cpu-defs: Remove unnecessary headers
"exec/cpu-defs.h" should be kept as minimal as possible;
besides these includes don't seem necessary. Remove them.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Tested-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20241114011310.3615-3-philmd@linaro.org>
2024-12-20 17:44:56 +01:00
Philippe Mathieu-Daudé
1f52d85e36 exec/cpu-all: Include missing 'exec/cpu-defs.h' header
TARGET_PAGE_BITS is defined in each target "cpu-param.h",
itself included by "exec/cpu-defs.h".
Include the latter in order to avoid when refactoring:

  In file included from ../../system/watchpoint.c:23:
  include/exec/cpu-all.h:356:19: error: use of undeclared identifier 'TARGET_PAGE_BITS'
    356 | QEMU_BUILD_BUG_ON(TLB_FLAGS_MASK & TLB_SLOW_FLAGS_MASK);
        |                   ^

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20241114011310.3615-2-philmd@linaro.org>
2024-12-20 17:44:56 +01:00
Philippe Mathieu-Daudé
9c6e54f475 accel/tcg: Have tlb_vaddr_to_host() use vaddr type
abi_ptr is expected to be used in user emulation.
tlb_vaddr_to_host() uses it, but can be used in
system emulation. Replace the type by 'vaddr' which
is equivalent on user emulation but also works on
system.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20241114011310.3615-13-philmd@linaro.org>
2024-12-20 17:44:56 +01:00
Philippe Mathieu-Daudé
433442a75d system: Move 'exec/confidential-guest-support.h' to system/
"exec/confidential-guest-support.h" is specific to system
emulation, so move it under the system/ namespace.
Mechanical change doing:

  $ sed -i \
    -e 's,exec/confidential-guest-support.h,sysemu/confidential-guest-support.h,' \
        $(git grep -l exec/confidential-guest-support.h)

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Message-Id: <20241218155913.72288-2-philmd@linaro.org>
2024-12-20 17:44:56 +01:00
Philippe Mathieu-Daudé
32cad1ffb8 include: Rename sysemu/ -> system/
Headers in include/sysemu/ are not only related to system
*emulation*, they are also used by virtualization. Rename
as system/ which is clearer.

Files renamed manually then mechanical change using sed tool.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Lei Yang <leiyang@redhat.com>
Message-Id: <20241203172445.28576-1-philmd@linaro.org>
2024-12-20 17:44:56 +01:00
Richard Henderson
a9af119f3d include/exec: Introduce fpst alias in helper-head.h.inc
This allows targets to declare that the helper requires a
float_status pointer and instead of a generic void pointer.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-12-12 14:28:38 -06:00
Mattias Nissler
c3ec57e495 softmmu: Expand comments describing max_bounce_buffer_size
Clarify how the parameter gets configured and how it is used when
servicing DMA mapping requests targeting indirect memory regions.

Signed-off-by: Mattias Nissler <mnissler@rivosinc.com>
Message-Id: <20240910213512.843130-1-mnissler@rivosinc.com>
Acked-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2024-11-04 09:22:58 -05:00
Tomasz Jeznach
c6f3443af1 exec/memtxattr: add process identifier to the transaction attributes
Extend memory transaction attributes with process identifier to allow
per-request address translation logic to use requester_id / process_id
to identify memory mapping (e.g. enabling IOMMU w/ PASID translations).

Signed-off-by: Tomasz Jeznach <tjeznach@rivosinc.com>
Reviewed-by: Frank Chang <frank.chang@sifive.com>
Reviewed-by: Jason Chien <jason.chien@sifive.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Message-ID: <20241016204038.649340-2-dbarboza@ventanamicro.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2024-10-31 13:51:24 +10:00
Richard Henderson
4a75c8c7d6 include/exec: Improve probe_access_full{, _mmu} documentation
Suggested-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20241013184733.1423747-2-richard.henderson@linaro.org>
2024-10-22 13:45:03 -07:00
Philippe Mathieu-Daudé
5caa0e1b1b exec/memop: Remove unused memop_big_endian() helper
Last use of memop_big_endian() was removed in commit 592134617c
("accel/tcg: Reorg system mode store helpers").

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20241003234211.53644-3-philmd@linaro.org>
2024-10-15 11:55:09 -03:00
Philippe Mathieu-Daudé
68e05eff50 exec/tswap: Massage target_needs_bswap() definition
Invert target_needs_bswap() comparison to match the
COMPILING_PER_TARGET definition (2 lines upper).

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20241010175246.15779-2-philmd@linaro.org>
2024-10-15 11:55:09 -03:00
Richard Henderson
e5b063e81f include/exec/memop: Introduce memop_atomicity_bits
Split out of mmu_lookup.

Reviewed-by: Helge Deller <deller@gmx.de>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-10-13 11:27:03 -07:00
Richard Henderson
c5809eee45 include/exec/memop: Rename get_alignment_bits
Rename to use "memop_" prefix, like other functions
that operate on MemOp.

Reviewed-by: Helge Deller <deller@gmx.de>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-10-13 11:27:03 -07:00
Richard Henderson
da335fe12a include/exec/memop: Move get_alignment_bits from tcg.h
This function is specific to MemOp, not TCG in general.

Reviewed-by: Helge Deller <deller@gmx.de>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-10-13 11:27:03 -07:00
Ilya Leoshkevich
f781af3b14 include/exec: Introduce env_cpu_const()
It's the same as env_cpu(), but for const objects.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-ID: <20240912093012.402366-2-iii@linux.ibm.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-10-13 10:05:51 -07:00
Paolo Bonzini
fe678c45d2 tcg: remove singlestep_enabled from DisasContextBase
It is used in a couple of places only, both within the same target.
Those can use the cflags just as well, so remove the separate field.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-ID: <20241010083641.1785069-1-pbonzini@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-10-13 10:04:29 -07:00
Philippe Mathieu-Daudé
25f4e71722 accel/tcg: Make page_set_flags() documentation public
Commit e505a063ba ("translate-all: Add assert_(memory|tb)_lock
annotations") states page_set_flags() is "public APIs and [is]
documented as needing them held for linux-user mode".
Document the prototype.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20240822095045.72643-2-philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-10-08 06:40:31 -07:00
Philippe Mathieu-Daudé
c700d06819 disas: Remove CRIS disassembler
We just removed the CRIS target, the disassembler is now dead code.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20240904143603.52934-15-philmd@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2024-10-07 11:33:20 +02:00
Philippe Mathieu-Daudé
44e4075bf4 target/cris: Remove the deprecated CRIS target
The CRIS target is deprecated since v9.0 (commit c7bbef4023
"docs: mark CRIS support as deprecated").

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Acked-by: Edgar E. Iglesias <edgar.iglesias@amd.com>
Message-ID: <20240904143603.52934-14-philmd@linaro.org>
2024-09-13 20:11:13 +02:00
David Hildenbrand
b84f06c2be softmmu/physmem: fix memory leak in dirty_memory_extend()
As reported by Peter, we might be leaking memory when removing the
highest RAMBlock (in the weird ram_addr_t space), and adding a new one.

We will fail to realize that we already allocated bitmaps for more
dirty memory blocks, and effectively discard the pointers to them.

Fix it by getting rid of last_ram_page() and by remembering the number
of dirty memory blocks that have been allocated already.

While at it, let's use "unsigned int" for the number of blocks, which
should be sufficient until we reach ~32 exabytes.

Looks like this leak was introduced as we switched from using a single
bitmap_zero_extend() to allocating multiple bitmaps:
bitmap_zero_extend() relies on g_renew() which should have taken care of
this.

Resolves: https://lkml.kernel.org/r/CAFEAcA-k7a+VObGAfCFNygQNfCKL=AfX6A4kScq=VSSK0peqPg@mail.gmail.com
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Fixes: 5b82b703b6 ("memory: RCU ram_list.dirty_memory[] for safe RAM hotplug")
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Tested-by: Peter Maydell <peter.maydell@linaro.org>
Cc: qemu-stable@nongnu.org
Cc: Stefan Hajnoczi <stefanha@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
Link: https://lore.kernel.org/r/20240828090743.128647-1-david@redhat.com
Signed-off-by: Peter Xu <peterx@redhat.com>
2024-09-09 10:55:39 -04:00
Mattias Nissler
637b0aa139 softmmu: Support concurrent bounce buffers
When DMA memory can't be directly accessed, as is the case when
running the device model in a separate process without shareable DMA
file descriptors, bounce buffering is used.

It is not uncommon for device models to request mapping of several DMA
regions at the same time. Examples include:
 * net devices, e.g. when transmitting a packet that is split across
   several TX descriptors (observed with igb)
 * USB host controllers, when handling a packet with multiple data TRBs
   (observed with xhci)

Previously, qemu only provided a single bounce buffer per AddressSpace
and would fail DMA map requests while the buffer was already in use. In
turn, this would cause DMA failures that ultimately manifest as hardware
errors from the guest perspective.

This change allocates DMA bounce buffers dynamically instead of
supporting only a single buffer. Thus, multiple DMA mappings work
correctly also when RAM can't be mmap()-ed.

The total bounce buffer allocation size is limited individually for each
AddressSpace. The default limit is 4096 bytes, matching the previous
maximum buffer size. A new x-max-bounce-buffer-size parameter is
provided to configure the limit for PCI devices.

Signed-off-by: Mattias Nissler <mnissler@rivosinc.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Acked-by: Peter Xu <peterx@redhat.com>
Link: https://lore.kernel.org/r/20240819135455.2957406-1-mnissler@rivosinc.com
Signed-off-by: Peter Xu <peterx@redhat.com>
2024-09-09 10:55:39 -04:00
Stefan Weil
24c32ed374 docs: Fix some typos (found by typos) and grammar issues
Fix the misspellings of "overriden" also in code comments.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20240813125638.395461-1-sw@weilnetz.de>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240813202329.1237572-20-alex.bennee@linaro.org>
2024-08-16 14:12:59 +01:00
Harsh Prateek Bora
18530e7c57 cpu-common.c: export cpu_get_free_index to be reused later
This helper provides an easy way to identify the next available free cpu
index which can be used for vcpu creation. Until now, this is being
called at a very later stage and there is a need to be able to call it
earlier (for now, with ppc64) hence the need to export.

Suggested-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
2024-07-26 09:21:06 +10:00
Richard Henderson
6410f877f5 Misc HW patch queue
- Restrict probe_access*() functions to TCG (Phil)
 - Extract do_invalidate_device_tlb from vtd_process_device_iotlb_desc (Clément)
 - Fixes in Loongson IPI model (Bibo & Phil)
 - Make docs/interop/firmware.json compatible with qapi-gen.py script (Thomas)
 - Correct MPC I2C MMIO region size (Zoltan)
 - Remove useless cast in Loongson3 Virt machine (Yao)
 - Various uses of range overlap API (Yao)
 - Use ERRP_GUARD macro in nubus_virtio_mmio_realize (Zhao)
 - Use DMA memory API in Goldfish UART model (Phil)
 - Expose fifo8_pop_buf and introduce fifo8_drop (Phil)
 - MAINTAINERS updates (Zhao, Phil)
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Merge tag 'hw-misc-20240723' of https://github.com/philmd/qemu into staging

Misc HW patch queue

- Restrict probe_access*() functions to TCG (Phil)
- Extract do_invalidate_device_tlb from vtd_process_device_iotlb_desc (Clément)
- Fixes in Loongson IPI model (Bibo & Phil)
- Make docs/interop/firmware.json compatible with qapi-gen.py script (Thomas)
- Correct MPC I2C MMIO region size (Zoltan)
- Remove useless cast in Loongson3 Virt machine (Yao)
- Various uses of range overlap API (Yao)
- Use ERRP_GUARD macro in nubus_virtio_mmio_realize (Zhao)
- Use DMA memory API in Goldfish UART model (Phil)
- Expose fifo8_pop_buf and introduce fifo8_drop (Phil)
- MAINTAINERS updates (Zhao, Phil)

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# gpg: Good signature from "Philippe Mathieu-Daudé (F4BUG) <f4bug@amsat.org>" [full]

* tag 'hw-misc-20240723' of https://github.com/philmd/qemu: (28 commits)
  MAINTAINERS: Add myself as a reviewer of machine core
  MAINTAINERS: Cover guest-agent in QAPI schema
  util/fifo8: Introduce fifo8_drop()
  util/fifo8: Expose fifo8_pop_buf()
  util/fifo8: Rename fifo8_pop_buf() -> fifo8_pop_bufptr()
  util/fifo8: Rename fifo8_peek_buf() -> fifo8_peek_bufptr()
  util/fifo8: Use fifo8_reset() in fifo8_create()
  util/fifo8: Fix style
  chardev/char-fe: Document returned value on error
  hw/char/goldfish: Use DMA memory API
  hw/nubus/virtio-mmio: Fix missing ERRP_GUARD() in realize handler
  dump: make range overlap check more readable
  crypto/block-luks: make range overlap check more readable
  system/memory_mapping: make range overlap check more readable
  sparc/ldst_helper: make range overlap check more readable
  cxl/mailbox: make range overlap check more readable
  util/range: Make ranges_overlap() return bool
  hw/mips/loongson3_virt: remove useless type cast
  hw/i2c/mpc_i2c: Fix mmio region size
  docs/interop/firmware.json: convert "Example" section
  ...

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-07-24 15:39:43 +10:00
Richard Henderson
5885bcef3d virtio,pci,pc: features,fixes
pci: Initial support for SPDM Responders
 cxl: Add support for scan media, feature commands, device patrol scrub
     control, DDR5 ECS control, firmware updates
 virtio: in-order support
 virtio-net: support for SR-IOV emulation (note: known issues on s390,
                                           might get reverted if not fixed)
 smbios: memory device size is now configurable per Machine
 cpu: architecture agnostic code to support vCPU Hotplug
 
 Fixes, cleanups all over the place.
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_upstream' of https://git.kernel.org/pub/scm/virt/kvm/mst/qemu into staging

virtio,pci,pc: features,fixes

pci: Initial support for SPDM Responders
cxl: Add support for scan media, feature commands, device patrol scrub
    control, DDR5 ECS control, firmware updates
virtio: in-order support
virtio-net: support for SR-IOV emulation (note: known issues on s390,
                                          might get reverted if not fixed)
smbios: memory device size is now configurable per Machine
cpu: architecture agnostic code to support vCPU Hotplug

Fixes, cleanups all over the place.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

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# gpg:                issuer "mst@redhat.com"
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>" [undefined]
# gpg:                 aka "Michael S. Tsirkin <mst@redhat.com>" [undefined]
# gpg: WARNING: The key's User ID is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 0270 606B 6F3C DF3D 0B17  0970 C350 3912 AFBE 8E67
#      Subkey fingerprint: 5D09 FD08 71C8 F85B 94CA  8A0D 281F 0DB8 D28D 5469

* tag 'for_upstream' of https://git.kernel.org/pub/scm/virt/kvm/mst/qemu: (61 commits)
  hw/nvme: Add SPDM over DOE support
  backends: Initial support for SPDM socket support
  hw/pci: Add all Data Object Types defined in PCIe r6.0
  tests/acpi: Add expected ACPI AML files for RISC-V
  tests/qtest/bios-tables-test.c: Enable basic testing for RISC-V
  tests/acpi: Add empty ACPI data files for RISC-V
  tests/qtest/bios-tables-test.c: Remove the fall back path
  tests/acpi: update expected DSDT blob for aarch64 and microvm
  acpi/gpex: Create PCI link devices outside PCI root bridge
  tests/acpi: Allow DSDT acpi table changes for aarch64
  hw/riscv/virt-acpi-build.c: Update the HID of RISC-V UART
  hw/riscv/virt-acpi-build.c: Add namespace devices for PLIC and APLIC
  virtio-iommu: Add trace point on virtio_iommu_detach_endpoint_from_domain
  hw/vfio/common: Add vfio_listener_region_del_iommu trace event
  virtio-iommu: Remove the end point on detach
  virtio-iommu: Free [host_]resv_ranges on unset_iommu_devices
  virtio-iommu: Remove probe_done
  Revert "virtio-iommu: Clear IOMMUDevice when VFIO device is unplugged"
  gdbstub: Add helper function to unregister GDB register space
  physmem: Add helper function to destroy CPU AddressSpace
  ...

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-07-24 09:32:04 +10:00
Philippe Mathieu-Daudé
99481a0988 accel: Restrict probe_access*() functions to TCG
This API is specific to TCG (already handled by hardware
accelerators), so restrict it with #ifdef'ry. Remove
unnecessary stubs.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240529155918.6221-1-philmd@linaro.org>
2024-07-23 18:08:44 +02:00
Richard Henderson
3d75856d1a accel/tcg: Move {set,clear}_helper_retaddr to cpu_ldst.h
Use of these in helpers goes hand-in-hand with tlb_vaddr_to_host
and other probing functions.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-07-23 10:56:04 +10:00
Salil Mehta
242da18082 gdbstub: Add helper function to unregister GDB register space
Add common function to help unregister the GDB register space. This shall be
done in context to the CPU unrealization.

Note: These are common functions exported to arch specific code. For example,
for ARM this code is being referred in associated arch specific patch-set:

Link: https://lore.kernel.org/qemu-devel/20230926103654.34424-1-salil.mehta@huawei.com/

Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Tested-by: Vishnu Pajjuri <vishnu@os.amperecomputing.com>
Reviewed-by: Gavin Shan <gshan@redhat.com>
Tested-by: Xianglai Li <lixianglai@loongson.cn>
Tested-by: Miguel Luis <miguel.luis@oracle.com>
Reviewed-by: Shaoqin Huang <shahuang@redhat.com>
Reviewed-by: Vishnu Pajjuri <vishnu@os.amperecomputing.com>
Tested-by: Zhao Liu <zhao1.liu@intel.com>
Acked-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <20240716111502.202344-8-salil.mehta@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2024-07-22 20:15:41 -04:00
Salil Mehta
24bec42f3d physmem: Add helper function to destroy CPU AddressSpace
Virtual CPU Hot-unplug leads to unrealization of a CPU object. This also
involves destruction of the CPU AddressSpace. Add common function to help
destroy the CPU AddressSpace.

Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Tested-by: Vishnu Pajjuri <vishnu@os.amperecomputing.com>
Reviewed-by: Gavin Shan <gshan@redhat.com>
Tested-by: Xianglai Li <lixianglai@loongson.cn>
Tested-by: Miguel Luis <miguel.luis@oracle.com>
Reviewed-by: Shaoqin Huang <shahuang@redhat.com>
Tested-by: Zhao Liu <zhao1.liu@intel.com>
Acked-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <20240716111502.202344-7-salil.mehta@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2024-07-22 20:15:41 -04:00
Eric Auger
2457343d05 memory: remove IOMMU MR iommu_set_page_size_mask() callback
Everything is now in place to use the Host IOMMU Device callbacks
to retrieve the page size mask usable with a given assigned device.
This new method brings the advantage to pass the info much earlier
to the virtual IOMMU and before the IOMMU MR gets enabled. So let's
remove the call to memory_region_iommu_set_page_size_mask in
vfio common.c and remove the single implementation of the IOMMU MR
callback in the virtio-iommu.c

Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Reviewed-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
2024-07-09 11:50:37 +02:00
Roman Kiryanov
7246c4cc47 exec: don't use void* in pointer arithmetic in headers
void* pointer arithmetic is a GCC extentension which could not be
available in other build tools (e.g. C++). This changes removes this
assumption.

Signed-off-by: Roman Kiryanov <rkir@google.com>
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Link: https://lore.kernel.org/r/20240620201654.598024-1-rkir@google.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-06-28 14:44:51 +02:00
Roman Kiryanov
17c7df806b exec: avoid using C++ keywords in function parameters
to use the QEMU headers with a C++ compiler.

Signed-off-by: Roman Kiryanov <rkir@google.com>
Link: https://lore.kernel.org/r/20240618224553.878869-1-rkir@google.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-06-28 14:44:51 +02:00