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2025-02-10user: Introduce host_interrupt_signalIlya Leoshkevich1-5/+20
Attaching to the gdbstub of a running process requires stopping its threads. For threads that run on a CPU, cpu_exit() is enough, but the only way to grab attention of a thread that is stuck in a long-running syscall is to interrupt it with a signal. Reserve a host realtime signal for this, just like it's already done for TARGET_SIGABRT on Linux. This may reduce the number of available guest realtime signals by one, but this is acceptable, since there are quite a lot of them, and it's unlikely that there are apps that need them all. Set signal_pending for the safe_sycall machinery to prevent invoking the syscall. This is a lie, since we don't queue a guest signal, but process_pending_signals() can handle the absence of pending signals. The syscall returns with QEMU_ERESTARTSYS errno, which arranges for the automatic restart. This is important, because it helps avoiding disturbing poorly written guests. Reviewed-by: Warner Losh <imp@bsdimp.com> Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Message-Id: <20250117001542.8290-5-iii@linux.ibm.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20250207153112.3939799-14-alex.bennee@linaro.org>
2025-02-10user: Introduce user/signal.hIlya Leoshkevich3-1/+2
gdbstub needs target_to_host_signal(), so move its declaration to a public header. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Warner Losh <imp@bsdimp.com> Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Message-Id: <20250117001542.8290-4-iii@linux.ibm.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20250207153112.3939799-13-alex.bennee@linaro.org>
2025-02-07linux-user: Do not define struct sched_attr if libc headers doKhem Raj1-1/+3
glibc 2.41+ has added [1] definitions for sched_setattr and sched_getattr functions and struct sched_attr. Therefore, it needs to be checked for here as well before defining sched_attr, to avoid a compilation failure. Define sched_attr conditionally only when SCHED_ATTR_SIZE_VER0 is not defined. [1] https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=21571ca0d70302909cf72707b2a7736cf12190a0;hp=298bc488fdc047da37482f4003023cb9adef78f8 Signed-off-by: Khem Raj <raj.khem@gmail.com> Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2799 Cc: qemu-stable@nongnu.org Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2025-01-24Merge tag 'linux-user-fix-gupnp-pull-request' of ↵Stefan Hajnoczi3-17/+192
https://github.com/hdeller/qemu-hppa into staging linux-user: Add support for various missing netlink sockopt entries Add missing sockopt calls and thus fix building the debian gupnp package in a chroot. This fixes debian bug report: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1044651 Signed-off-by: Helge Deller <deller@gmx.de> # -----BEGIN PGP SIGNATURE----- # # iHUEABYKAB0WIQS86RI+GtKfB8BJu973ErUQojoPXwUCZ5OPdwAKCRD3ErUQojoP # X9EWAP0ZvoDehmNzgWMlUpWT+d4O06kMsrDsi+tRddUUSJgp4wEAuuycr4go4b9b # 6xLDLr81C7MFEGsztGcRVhPwVdDJxAU= # =Lw8U # -----END PGP SIGNATURE----- # gpg: Signature made Fri 24 Jan 2025 08:02:47 EST # gpg: using EDDSA key BCE9123E1AD29F07C049BBDEF712B510A23A0F5F # gpg: Good signature from "Helge Deller <deller@gmx.de>" [unknown] # gpg: aka "Helge Deller <deller@kernel.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: 4544 8228 2CD9 10DB EF3D 25F8 3E5F 3D04 A7A2 4603 # Subkey fingerprint: BCE9 123E 1AD2 9F07 C049 BBDE F712 B510 A23A 0F5F * tag 'linux-user-fix-gupnp-pull-request' of https://github.com/hdeller/qemu-hppa: linux-user: netlink: Add missing QEMU_IFLA entries linux-user: netlink: add netlink neighbour emulation linux-user: netlink: Add emulation of IP_MULTICAST_IF linux-user: netlink: Add IP_PKTINFO cmsg parsing linux-user: Use unique error messages for cmsg parsing linux-user: netlink: Add missing IFA_PROTO to host_to_target_data_addr_rtattr() Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2025-01-24linux-user: netlink: Add missing QEMU_IFLA entriesHelge Deller1-1/+35
This fixes the following qemu warnings when building debian gupnp package: Unknown host QEMU_IFLA type: 61 Unknown host QEMU_IFLA type: 58 Unknown host QEMU_IFLA type: 59 Unknown host QEMU_IFLA type: 60 Unknown host QEMU_IFLA type: 32820 QEMU_IFLA type 32820 is actually NLA_NESTED | QEMU_IFLA_PROP_LIST (a nested entry), which is why rta_type needs to be masked with NLA_TYPE_MASK. Signed-off-by: Helge Deller <deller@gmx.de> Reviewed-by: Laurent Vivier <laurent@vivier.eu>
2025-01-24linux-user: netlink: add netlink neighbour emulationHelge Deller1-0/+100
Fixes various warnings in the testsuite while building gupnp: gssdp-net-DEBUG: Failed to send netlink message: Operation not supported gupnp-context-DEBUG: Mismatch between host header and host IP (example.com, expected: 127.0.0.1) gupnp-context-DEBUG: Mismatch between host header and host port (80, expected 4711) gupnp-context-DEBUG: Mismatch between host header and host IP (192.168.1.2, expected: 127.0.0.1) gupnp-context-DEBUG: Mismatch between host header and host IP (fe80::01, expected: 127.0.0.1) gupnp-context-DEBUG: Mismatch between host header and host port (80, expected 4711) gupnp-context-DEBUG: Failed to parse HOST header from request: Invalid IPv6 address ?[fe80::01%1]? in URI gupnp-context-DEBUG: Failed to parse HOST header from request: Invalid IPv6 address ?[fe80::01%eth0]? in URI gupnp-context-DEBUG: Failed to parse HOST header from request: Could not parse port ?:1? in URI gupnp-context-DEBUG: Mismatch between host header and host IP (example.com, expected: ::1) gupnp-context-DEBUG: Mismatch between host header and host port (80, expected 4711) gupnp-context-DEBUG: Mismatch between host header and host IP (example.com, expected: ::1) gupnp-context-DEBUG: Mismatch between host header and host port (80, expected 4711) gupnp-context-DEBUG: Mismatch between host header and host IP (example.com, expected: ::1) Signed-off-by: Helge Deller <deller@gmx.de> Reviewed-by: Laurent Vivier <laurent@vivier.eu>
2025-01-24linux-user: netlink: Add emulation of IP_MULTICAST_IFHelge Deller1-6/+14
Add IP_MULTICAST_IF and share the code with IP_ADD_MEMBERSHIP / IP_DROP_MEMBERSHIP. Sharing the code makes sense, because the manpage of ip(7) says: IP_MULTICAST_IF (since Linux 1.2) Set the local device for a multicast socket. The argument for setsockopt(2) is an ip_mreqn or (since Linux 3.5) ip_mreq structure similar to IP_ADD_MEMBERSHIP, or an in_addr structure. (The kernel determines which structure is being passed based on the size passed in optlen.) For getsockopt(2), the argument is an in_addr structure. Signed-off-by: Helge Deller <deller@gmx.de> Reviewed-by: Laurent Vivier <laurent@vivier.eu>
2025-01-24linux-user: netlink: Add IP_PKTINFO cmsg parsingHelge Deller2-0/+16
Fixes those warnings: Unsupported host ancillary data: 0/8 Signed-off-by: Helge Deller <deller@gmx.de> Reviewed-by: Laurent Vivier <laurent@vivier.eu>
2025-01-24linux-user: Use unique error messages for cmsg parsingHelge Deller1-2/+2
Avoid using the same error message for two different code paths as it complicates determining the one which actually triggered. Signed-off-by: Helge Deller <deller@gmx.de> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Laurent Vivier <laurent@vivier.eu>
2025-01-24linux-user: netlink: Add missing IFA_PROTO to host_to_target_data_addr_rtattr()Helge Deller1-8/+25
Fix this warning: Unknown host IFA type: 11 While adding IFA_PROTO, convert all IFA_XXX values over to QEMU_IFA_XXX values to avoid a build failure on Ubuntu 22.04 (kernel v5.18 which does not know IFA_PROTO yet). Signed-off-by: Helge Deller <deller@gmx.de> Reviewed-by: Laurent Vivier <laurent@vivier.eu>
2025-01-21Merge tag 'pull-tcg-20250117' of https://gitlab.com/rth7680/qemu into stagingStefan Hajnoczi1-1/+19
tcg: - Add TCGOP_TYPE, TCGOP_FLAGS. - Pass type and flags to tcg_op_supported, tcg_target_op_def. - Split out tcg-target-has.h and unexport from tcg.h. - Reorg constraint processing; constify TCGOpDef. - Make extract, sextract, deposit opcodes mandatory. - Merge ext{8,16,32}{s,u} opcodes into {s}extract. tcg/mips: Expand bswap unconditionally tcg/riscv: Use SRAIW, SRLIW for {s}extract_i64 tcg/riscv: Use BEXTI for single-bit extractions tcg/sparc64: Use SRA, SRL for {s}extract_i64 disas/riscv: Guard dec->cfg dereference for host disassemble util/cpuinfo-riscv: Detect Zbs accel/tcg: Call tcg_tb_insert() for one-insn TBs linux-user: Add missing /proc/cpuinfo fields for sparc # -----BEGIN PGP SIGNATURE----- # # iQFRBAABCgA7FiEEekgeeIaLTbaoWgXAZN846K9+IV8FAmeKnzUdHHJpY2hhcmQu # aGVuZGVyc29uQGxpbmFyby5vcmcACgkQZN846K9+IV+Kvgf+LG9UjXlWF9GK923E # TllBL2rLf1OOdtTXWO15VcvGMoWDwB3tVBdhihdvXmnWju+WbfMk6mct5NhzsKn9 # LmuugMIZs+hMROj+bgMK8x47jRIh5N2rDYxcEgmyfIpYb2o9qvyqKecGVRlSJTCE # bmt5UFbvPThBb8upoMfq3F6evuMx0szBP7wrOwSR/VGpmzIr20UTEWo6I1ALp4uj # paFaysYol4em3dIhkiuV9cL7E0EIObaNa7l9RUci/BmTq+JaVxUnW1Y2i0PEwKwG # FJSfYTJk3wBgAVxC2zC2g3ZM7uKuecSXMpiFopTiuyQLp7Q61i9kCNvEq0qY5tdb # DaqR/g== # =cv4O # -----END PGP SIGNATURE----- # gpg: Signature made Fri 17 Jan 2025 13:19:33 EST # 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-20250117' of https://gitlab.com/rth7680/qemu: (68 commits) softfloat: Constify helpers returning float_status field accel/tcg: Call tcg_tb_insert() for one-insn TBs tcg: Document tb_lookup() and tcg_tb_lookup() linux-user: Add missing /proc/cpuinfo fields for sparc tcg/riscv: Use BEXTI for single-bit extractions util/cpuinfo-riscv: Detect Zbs tcg: Remove TCG_TARGET_HAS_deposit_{i32,i64} tcg: Remove TCG_TARGET_HAS_{s}extract_{i32,i64} tcg/tci: Remove assertions for deposit and extract tcg/tci: Provide TCG_TARGET_{s}extract_valid tcg/sparc64: Use SRA, SRL for {s}extract_i64 tcg/s390x: Fold the ext{8,16,32}[us] cases into {s}extract tcg/riscv: Use SRAIW, SRLIW for {s}extract_i64 tcg/riscv64: Fold the ext{8,16,32}[us] cases into {s}extract tcg/ppc: Fold the ext{8,16,32}[us] cases into {s}extract tcg/mips: Fold the ext{8,16,32}[us] cases into {s}extract tcg/loongarch64: Fold the ext{8,16,32}[us] cases into {s}extract tcg/arm: Add full [US]XT[BH] into {s}extract tcg/aarch64: Expand extract with offset 0 with andi tcg/aarch64: Provide TCG_TARGET_{s}extract_valid ... Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2025-01-17system: propagate Error to gdbserver_start (and other device setups)Alex Bennée1-5/+1
This started as a clean-up to properly pass a Error handler to the gdbserver_start so we could do the right thing for command line and HMP invocations. Now that we have cleaned up foreach_device_config_or_exit() in earlier patches we can further simplify by it by passing &error_fatal instead of checking the return value. Having a return value is still useful for HMP though so tweak the return to use a simple bool instead. Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org> Acked-by: Ilya Leoshkevich <iii@linux.ibm.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20250116160306.1709518-11-alex.bennee@linaro.org>
2025-01-16linux-user: Add missing /proc/cpuinfo fields for sparcHelge Deller1-1/+19
Add some missing fields which may be parsed by userspace applications. Signed-off-by: Helge Deller <deller@gmx.de> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-ID: <Z39B1wzNNpndmOxZ@p100>
2024-12-20accel/tcg: Include missing 'exec/translation-block.h' headerPhilippe Mathieu-Daudé1-0/+1
TB compile flags, tb_page_addr_t type, tb_cflags() and few other methods are defined in "exec/translation-block.h". All these files don't include "exec/translation-block.h" but include "exec/exec-all.h" which include it. Explicitly include "exec/translation-block.h" to be able to remove it from "exec/exec-all.h" later when it won't be necessary. Otherwise we'd get errors such: accel/tcg/internal-target.h:59:20: error: a parameter list without types is only allowed in a function definition 59 | void tb_lock_page0(tb_page_addr_t); | ^ accel/tcg/tb-hash.h:64:23: error: unknown type name 'tb_page_addr_t' 64 | uint32_t tb_hash_func(tb_page_addr_t phys_pc, vaddr pc, | ^ accel/tcg/tcg-accel-ops.c:62:36: error: use of undeclared identifier 'CF_CLUSTER_SHIFT' 62 | cflags = cpu->cluster_index << CF_CLUSTER_SHIFT; | ^ accel/tcg/watchpoint.c:102:47: error: use of undeclared identifier 'CF_NOIRQ' 102 | cpu->cflags_next_tb = 1 | CF_NOIRQ | curr_cflags(cpu); | ^ target/i386/helper.c:536:28: error: use of undeclared identifier 'CF_PCREL' 536 | if (tcg_cflags_has(cs, CF_PCREL)) { | ^ target/rx/cpu.c:51:21: error: incomplete definition of type 'struct TranslationBlock' 51 | cpu->env.pc = tb->pc; | ~~^ system/physmem.c:2977:9: error: call to undeclared function 'tb_invalidate_phys_range'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 2977 | tb_invalidate_phys_range(addr, addr + length - 1); | ^ plugins/api.c:96:12: error: call to undeclared function 'tb_cflags'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 96 | return tb_cflags(tcg_ctx->gen_tb) & CF_MEMI_ONLY; | ^ 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: <20241114011310.3615-5-philmd@linaro.org>
2024-12-20accel/tcg: Move tcg_cflags_has/set() to 'exec/translation-block.h'Philippe Mathieu-Daudé2-0/+2
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>
2024-12-20user: Move various declarations out of 'exec/exec-all.h'Philippe Mathieu-Daudé1-0/+1
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>
2024-12-20user: Declare cpu_loop() once in 'user/cpu_loop.h'Philippe Mathieu-Daudé1-1/+0
Declare cpu_loop() once in "user/cpu_loop.h". bsd-user gets the G_NORETURN attribute. 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: <20241212185341.2857-18-philmd@linaro.org>
2024-12-20user: Move 'linux-user/cpu_loop-common.h' -> 'user/cpu_loop.h'Philippe Mathieu-Daudé20-53/+19
"linux-user/cpu_loop-common.h" is generic enough to be used by bsd-user, so rename it as "user/cpu_loop.h". Mechanical change running: $ sed -i -e 's,cpu_loop-common.h,user/cpu_loop.h,' \ $(git grep -l cpu_loop-common.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: <20241212185341.2857-17-philmd@linaro.org>
2024-12-20user: Forward declare target_cpu_copy_regs structurePhilippe Mathieu-Daudé18-18/+21
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: <20241212185341.2857-16-philmd@linaro.org>
2024-12-20accel/tcg: Move user-related declarations out of 'exec/cpu-all.h' (4/4)Philippe Mathieu-Daudé2-0/+2
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>
2024-12-20accel/tcg: Move user-related declarations out of 'exec/cpu-all.h' (3/4)Philippe Mathieu-Daudé1-0/+1
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>
2024-12-20accel/tcg: Move user-related declarations out of 'exec/cpu-all.h' (1/4)Philippe Mathieu-Daudé3-0/+3
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>
2024-12-20accel/tcg: Move page_[un]protect() to 'user/page-protection.h'Philippe Mathieu-Daudé1-1/+1
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>
2024-12-20accel/tcg: Declare mmap_[un]lock() in 'exec/page-protection.h'Philippe Mathieu-Daudé1-0/+1
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>
2024-12-20linux-user/aarch64: Include missing 'user/abitypes.h' headerPhilippe Mathieu-Daudé1-0/+2
arm_set_mte_tcf0() uses the abi_long type which is defined in "user/abitypes.h". Include it in order to avoid when refactoring: In file included from ../../target/arm/gdbstub64.c:28: ../linux-user/aarch64/mte_user_helper.h:30:42: error: unknown type name ‘abi_long’; did you mean ‘u_long’? 30 | void arm_set_mte_tcf0(CPUArchState *env, abi_long value); | ^~~~~~~~ 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: <20241212185341.2857-3-philmd@linaro.org>
2024-12-14Merge tag 'pull-hex-20241212' of https://github.com/quic/qemu into stagingStefan Hajnoczi1-2/+2
Remove HEX_DEBUG, EXCP/CAUSE fixes # -----BEGIN PGP SIGNATURE----- # # iQIzBAABCgAdFiEEPWaq5HRZSCTIjOD4GlSvuOVkbDIFAmdbtW4ACgkQGlSvuOVk # bDJTOxAArBX1tuF46hpqsUIENvfKEXgb64W9YjzPi4CsFM90FP/4zVkxoLVjkyxe # jhngUsgNc/p7gEGhW8/OGPVwYrvXdS486E32+l4Qv2E7lWR7nNP0PeNdVYUiZotB # hALWMAwUWVXy23gMFlzjIyuRBYtRNhjwP6aLmbyWVqNhVckhpiQRxlNmv5+0nLmi # 1mp92z6ziBJK4i8HX7Nm4ske4b0mHhtmkOZe8ulx+Ky3Ag+q1wptt+XIMnv7dTFT # w7RH22LBQaRX6OKShRYspnDyMWQUaUXP8t4clnNOp+aesUpVyAlaB4mXj/uaSNlZ # hX944xJoC3Qh5K5kh64nbnm8SpqRalwe7K0CvWEeVCRlO8uFmtI6IZ9hxuBnMl/v # cHc+yaM3FG0BnN3GtCJIsl2x/8qQBChqS9EOLNhAzsbeyedHUSJCbnPKGtf0ggnK # jwhsDEl/1jnZ+ZTZxT+bW1aAXvh/dowHDmz9joVdibnYNKdHox0ur1S0foZptFVQ # TkFLkZ0m3AqgxWc4fL5xUvrN6o8EbZjzhG+gVuCP8rQANX90L2rGp7neteDRMviE # V5D2a76iOor2qHwR6rc2Um0Kd6c8X0UUnDsBWW5TpqOvxfKsdbwfOI+c46+nZkGZ # riFeeYpISv3g8wVvLK9HoTr30D4hQox3wyl7Bn6w8QXvcrcLk8w= # =6vY4 # -----END PGP SIGNATURE----- # gpg: Signature made Thu 12 Dec 2024 23:17:50 EST # gpg: using RSA key 3D66AAE474594824C88CE0F81A54AFB8E5646C32 # gpg: Good signature from "Brian Cain (OSS Qualcomm) <brian.cain@oss.qualcomm.com>" [unknown] # gpg: aka "Brian Cain <bcain@kernel.org>" [unknown] # gpg: aka "Brian Cain (QuIC) <bcain@quicinc.com>" [unknown] # gpg: aka "Brian Cain (CAF) <bcain@codeaurora.org>" [unknown] # gpg: aka "bcain" [unknown] # gpg: aka "Brian Cain (QUIC) <quic_bcain@quicinc.com>" [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: 6350 20F9 67A7 7164 79EF 49E0 175C 464E 541B 6D47 # Subkey fingerprint: 3D66 AAE4 7459 4824 C88C E0F8 1A54 AFB8 E564 6C32 * tag 'pull-hex-20241212' of https://github.com/quic/qemu: target/hexagon: Make HVX vector args. restrict * target/hexagon: Use argparse in all python scripts target/hexagon: add enums for event, cause target/hexagon: rename HEX_EXCP_*=>HEX_CAUSE_* Hexagon (target/hexagon) Remove HEX_DEBUG/HEX_DEBUG_LOG Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2024-12-12target/hexagon: rename HEX_EXCP_*=>HEX_CAUSE_*Brian Cain1-2/+2
The values previously used for "HEX_EXCP_*" were the cause code definitions and not the event numbers. So in this commit, we update the names to reflect the cause codes. In HEX_EVENT_TRAP0's case, we add a new "HEX_EVENT_*" with the correct event number. Reviewed-by: Taylor Simpson <ltaylorsimpson@gmail.com> Signed-off-by: Brian Cain <brian.cain@oss.qualcomm.com>
2024-12-11target/arm: Set default NaN pattern explicitlyPeter Maydell1-0/+5
Set the default NaN pattern explicitly for the arm target. This includes setting it for the old linux-user nwfpe emulation. For nwfpe, our default doesn't match the real kernel, but we avoid making a behaviour change in this commit. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-41-peter.maydell@linaro.org
2024-11-22linux-user: Fix strace output for s390x mmap()Ilya Leoshkevich3-5/+9
print_mmap() assumes that mmap() receives arguments via memory if mmap2() is present. s390x (as opposed to s390) does not fit this pattern: it does not have mmap2(), but mmap() still receives arguments via memory. Fix by sharing the detection logic between syscall.c and strace.c. Cc: qemu-stable@nongnu.org Fixes: d971040c2d16 ("linux-user: Fix strace output for old_mmap") Suggested-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Message-ID: <20241120212717.246186-1-iii@linux.ibm.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-11-22linux-user: Print tid not pid with straceJ. Neuschäfer1-1/+1
This aligns with strace, and is very useful when tracing multi-threaded programs. The result is the same in single-threaded programs. Signed-off-by: J. Neuschäfer <j.neuschaefer@gmx.net> Message-Id: 20241024-strace-v1-1-56c4161431cd@gmx.net [rth: Use TaskState.ts_tid via get_task_state()] Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-11-16linux-user/arm: Select vdso for be8 and be32 modesRichard Henderson5-12/+41
In be8 mode, instructions are little-endian. In be32 mode, instructions are big-endian. Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2333 Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-11-16linux-user/ppc: Reduce vdso alignment to 4kRichard Henderson4-2/+4
Reduce vdso alignment to minimum page size. Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-11-16linux-user/loongarch64: Reduce vdso alignment to 4kRichard Henderson2-1/+2
Reduce vdso alignment to minimum page size. Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-11-16linux-user/arm: Reduce vdso alignment to 4kRichard Henderson3-1/+1
Reduce vdso alignment to minimum page size. Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-11-16linux-user/aarch64: Reduce vdso alignment to 4kRichard Henderson3-2/+3
Reduce vdso alignment to minimum page size. Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-11-16linux-user: Drop image_info.alignmentRichard Henderson2-5/+3
This field is write-only. Use only the function-local variable within load_elf_image. Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-11-16linux-user: Honor elf alignment when placing imagesRichard Henderson1-7/+28
Most binaries don't actually depend on more than page alignment, but any binary can request it. Not honoring this was a bug. This became obvious when gdb reported Failed to read a valid object file image from memory when examining some vdso which are marked as needing more than page alignment. Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-11-16linux-user: Tolerate CONFIG_LSM_MMAP_MIN_ADDRIlya Leoshkevich1-1/+1
Running qemu-i386 on a system running with SELinux in enforcing mode (more precisely: s390x trixie container on Fedora 40) fails with: qemu-i386: tests/tcg/i386-linux-user/sigreturn-sigmask: Unable to find a guest_base to satisfy all guest address mapping requirements 00000000-ffffffff The reason is that main() determines mmap_min_addr from /proc/sys/vm/mmap_min_addr, but SELinux additionally defines CONFIG_LSM_MMAP_MIN_ADDR, which is normally larger: 32K or 64K, but, in general, can be anything. There is no portable way to query its value: /boot/config, /proc/config and /proc/config.gz are distro- and environment-specific. Once the identity map fails, the magnitude of guest_base does not matter, so fix by starting the search from 1M or 1G. Cc: qemu-stable@nongnu.org Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2598 Suggested-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Message-ID: <20241023002558.34589-1-iii@linux.ibm.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-11-16linux-user: Fix setreuid and setregid to use direct syscallsHelge Deller1-4/+16
The commit fd6f7798ac30 ("linux-user: Use direct syscalls for setuid(), etc") added direct syscall wrappers for setuid(), setgid(), etc since the system calls have different semantics than the libc functions. Add and use the corresponding wrappers for setreuid and setregid which were missed in that commit. This fixes the build of the debian package of the uid_wrapper library (https://cwrap.org/uid_wrapper.html) when running linux-user. Cc: qemu-stable@nongnu.org Signed-off-by: Helge Deller <deller@gmx.de> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Ilya Leoshkevich <iii@linux.ibm.com> Message-ID: <Zyo2jMKqq8hG8Pkz@p100> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-11-06Merge tag 'pull-lu-20241105' of https://gitlab.com/rth7680/qemu into stagingPeter Maydell5-73/+187
tests/tcg: Replace -mpower8-vector with -mcpu=power8 linux-user: Fix GDB complaining about system-supplied DSO string table index linux-user: Allow custom rt signal mappings # -----BEGIN PGP SIGNATURE----- # # iQFRBAABCgA7FiEEekgeeIaLTbaoWgXAZN846K9+IV8FAmcqM2wdHHJpY2hhcmQu # aGVuZGVyc29uQGxpbmFyby5vcmcACgkQZN846K9+IV86KQgAhR1OmVAhPYTJiYH6 # Bhp9s+PbdFw/UbxConf9+WFoa/vM1x/QvX1ybzNDl9aOeiH9RIX4hFWUH5WR8xu+ # gZrzplHDcsrUEs5Q7/GWGJaCbd92Rn6g5wcXyoVebMaVP1g/m+NJoxo2XOpZvY06 # G0BcNj4Ib/D0FgkgZrUJcf3DBWaW/9WCd17fBXLo1bpahdKvqV4PbmhhH+QZCVXr # GHg03F+/35U85kNVnPcUg4PJARQHdK4ZmfE4etgGvVkTdS8r43qfO1nMT0ul8aOD # uATdMQrbwKA0XLjWVOVxe4165c+luHpUweKNgiOie+s849YUM3TsFpunKoPBIEpQ # Gu0ejw== # =wipF # -----END PGP SIGNATURE----- # gpg: Signature made Tue 05 Nov 2024 15:02:04 GMT # 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-lu-20241105' of https://gitlab.com/rth7680/qemu: tests/tcg: Add SIGRTMIN/SIGRTMAX test linux-user: Allow custom rt signal mappings linux-user: Fix GDB complaining about system-supplied DSO string table index tests/tcg: Replace -mpower8-vector with -mcpu=power8 Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-11-05linux-user: Allow custom rt signal mappingsIlya Leoshkevich3-22/+100
Some applications want to use low priority realtime signals (e.g., SIGRTMAX). Currently QEMU cannot map all target realtime signals to host realtime signals, and chooses to sacrifice the end of the target realtime signal range. Allow users to choose how to map target realtime signals to host realtime signals using the new -t option, the new QEMU_RTSIG_MAP environment variable, and the new -Drtsig_map=\"...\" meson flag. To simplify things, the meson flag is not per-target, because the intended use case is app-specific qemu-user builds. The mapping is specified using the "tsig hsig count[,...]" syntax. Target realtime signals [tsig,tsig+count) are mapped to host realtime signals [hsig,hsig+count). Care is taken to avoid double and out-of-range mappings. Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-ID: <20241029232211.206766-2-iii@linux.ibm.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-11-05linux-user: Fix GDB complaining about system-supplied DSO string table indexIlya Leoshkevich2-51/+87
When debugging qemu-user processes using gdbstub, the following warning appears every time: warning: BFD: warning: system-supplied DSO at 0x7f8253cc3000 has a corrupt string table index The reason is that QEMU does not map the VDSO's section headers. The VDSO's ELF header's e_shoff points to zeros, which GDB fails to parse. The difference with the kernel's VDSO is that the latter is mapped as a blob, ignoring program headers - which also don't cover the section table. QEMU, on the other hand, loads it as an ELF file. There appears to be no way to place section headers inside a section, and, therefore, no way to refer to them from a linker script. Also, ld hardcodes section headers to be non-loadable, see _bfd_elf_assign_file_positions_for_non_load(). In theory ld could be enhanced by implementing an "SHDRS" keyword in addition to the existing "FILEHDR" and "PHDRS". There are multiple ways to resolve the issue: - Copy VDSO as a blob in load_elf_vdso(). This would require creating specialized loader logic, that duplicates parts of load_elf_image(). - Fix up VDSO's PHDR size in load_elf_vdso(). This would require either duplicating the parsing logic, or adding an ugly parameter to load_elf_image(). - Fix up VDSO's PHDR size in gen-vdso. This is the simplest solution, so do it. There are two tricky parts: - Byte-swaps need to be done either on local copies, or in-place and then reverted in the end. To preserve the existing code structure, do the former for Sym and Dyn, and the latter for Ehdr, Phdr, and Shdr. - There must be no .bss, which is already the case - but having an explicit check is helpful to ensure correctness. To verify this change, I diffed the on-disk and the loaded VDSOs; the result does not show anything unusual, except for what seems to be an existing oversight (which should probably be fixed separately): │ Symbol table '.dynsym' contains 8 entries: │ Num: Value Size Type Bind Vis Ndx Name │ - 0: 0000000000000000 0 NOTYPE LOCAL DEFAULT UND │ - 6: 0000000000000000 0 OBJECT GLOBAL DEFAULT ABS LINUX_2.6.29 │ + 0: 00007f61075bf000 0 NOTYPE LOCAL DEFAULT UND │ + 6: 00007f61075bf000 0 OBJECT GLOBAL DEFAULT ABS LINUX_2.6.29 Fixes: 2fa536d10797 ("linux-user: Add gen-vdso tool") Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-ID: <20241023202850.55211-1-iii@linux.ibm.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-11-05target/arm: Explicitly set 2-NaN propagation rulePeter Maydell1-0/+18
Set the 2-NaN propagation rule explicitly in the float_status words we use. We wrap this plus the pre-existing setting of the tininess-before-rounding flag in a new function arm_set_default_fp_behaviours() to avoid repetition, since we have a lot of float_status words at this point. The situation with FPA11 emulation in linux-user is a little odd, and arguably "correct" behaviour there would be to exactly match a real Linux kernel's FPA11 emulation. However FPA11 emulation is essentially dead at this point and so it seems better to continue with QEMU's current behaviour and leave a comment describing the situation. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241025141254.2141506-4-peter.maydell@linaro.org
2024-10-24Merge tag 'pull-tcg-20241022' of https://gitlab.com/rth7680/qemu into stagingPeter Maydell5-17/+84
tcg: Reset data_gen_ptr correctly tcg/riscv: Implement host vector support tcg/ppc: Fix tcg_out_rlw_rc target/i386: Walk NPT in guest real mode target/i386: Use probe_access_full_mmu in ptw_translate linux-user: Fix build failure caused by missing __u64 on musl linux-user: Emulate /proc/self/maps under mmap_lock linux-user/riscv: Fix definition of RISCV_HWPROBE_EXT_ZVFHMIN linux-user/ppc: Fix sigmask endianness issue in sigreturn # -----BEGIN PGP SIGNATURE----- # # iQFRBAABCgA7FiEEekgeeIaLTbaoWgXAZN846K9+IV8FAmcYbccdHHJpY2hhcmQu # aGVuZGVyc29uQGxpbmFyby5vcmcACgkQZN846K9+IV97TwgAmg27QFCdiTrqZgs2 # P1AO40zTgyTAwWx2gykaEuDWNhz/uSWvlBRN0/636wqGPkbJtrRHYM26og4BAThh # o172/IwiZqfKOR1ndHl9j3BrtmrlIlaEEjiikqy1MTZF127irV6JWoJE1mSUrAxy # 3Cm1K4gnK/e1+LdWf4Lj+K2lE6PpAK/ppKggzOXhtEgKiH1l4bUCl/Fq54wqphUn # YS+cpmgQDCkXFfmPbQqie0HDpe3bhb75qIDQrbC5JcZdHqV73rTwSZvfUOmS/5Re # 18K6nfAXXT+Zm0IrJMey/7b1jUWF3nMUVCTuLvmhSOwBAkIvTVYHko9CjvLtM6YH # UHu3yA== # =V393 # -----END PGP SIGNATURE----- # gpg: Signature made Wed 23 Oct 2024 04:30:15 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 * tag 'pull-tcg-20241022' of https://gitlab.com/rth7680/qemu: (24 commits) linux-user/riscv: Fix definition of RISCV_HWPROBE_EXT_ZVFHMIN linux-user: Fix build failure caused by missing __u64 on musl linux-user: Trace rt_sigprocmask's sigsets linux-user/ppc: Fix sigmask endianness issue in sigreturn linux-user: Emulate /proc/self/maps under mmap_lock target/i386: Remove ra parameter from ptw_translate target/i386: Use probe_access_full_mmu in ptw_translate target/i386: Walk NPT in guest real mode include/exec: Improve probe_access_full{, _mmu} documentation tcg/ppc: Fix tcg_out_rlw_rc tcg/riscv: Enable native vector support for TCG host tcg/riscv: Implement vector roti/v/x ops tcg/riscv: Implement vector shi/s/v ops tcg/riscv: Implement vector min/max ops tcg/riscv: Implement vector sat/mul ops tcg/riscv: Accept constant first argument to sub_vec tcg/riscv: Implement vector neg ops tcg/riscv: Implement vector cmp/cmpsel ops tcg/riscv: Add support for basic vector opcodes tcg/riscv: Implement vector mov/dup{m/i} ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-10-22linux-user/riscv: Fix definition of RISCV_HWPROBE_EXT_ZVFHMINYao Zi1-1/+1
Current definition yields a negative 32bits value, messing up hwprobe result when Zvfhmin extension presents. Replace it by using a 1ULL bit shift value as done in kernel upstream. Link: https://github.com/torvalds/linux/commit/5ea6764d9095e234b024054f75ebbccc4f0eb146 Fixes: a3432cf227 ("linux-user/riscv: Sync hwprobe keys with Linux") Cc: qemu-stable@nongnu.org Signed-off-by: Yao Zi <ziyao@disroot.org> Message-ID: <20241022160136.21714-2-ziyao@disroot.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-10-22linux-user: Fix build failure caused by missing __u64 on muslYao Zi1-3/+3
Commit 9651cead2f ("linux-user: add openat2 support in linux-user") ships a definition of struct open_how_ver0 while assuming type __u64 is available in code, which is not the case when building QEMU on musl. Let's replaces __u64 with uint64_t. Fixes: 9651cead2f ("linux-user: add openat2 support in linux-user") Signed-off-by: Yao Zi <ziyao@disroot.org> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-ID: <20241022122929.17465-2-ziyao@disroot.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-10-22linux-user: Trace rt_sigprocmask's sigsetsIlya Leoshkevich2-11/+76
Add a function for formatting target sigsets. It can be useful for other syscalls in the future, so put it into the beginning of strace.c. For simplicity, do not implement the strace's ~[] output syntax. Add a rt_sigprocmask return handler. Example outputs: 753914 rt_sigprocmask(SIG_BLOCK,[SIGCHLD SIGTSTP SIGTTIN SIGTTOU],0x00007f80fddfe380,8) = 0 (oldset=[SIGTTOU]) 753914 rt_sigprocmask(SIG_SETMASK,[SIGCHLD],NULL,8) = 0 753914 rt_sigprocmask(SIG_BLOCK,NULL,0x00007f80fddff3c0,8) = 0 (oldset=[]) Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Message-ID: <20241022102726.18520-1-iii@linux.ibm.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-10-22linux-user/ppc: Fix sigmask endianness issue in sigreturnIlya Leoshkevich1-1/+1
do_setcontext() copies the target sigmask without endianness handling and then uses target_to_host_sigset_internal(), which expects a byte-swapped one. Use target_to_host_sigset() instead. Fixes: bcd4933a23f1 ("linux-user: ppc signal handling") Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-ID: <20241017125811.447961-2-iii@linux.ibm.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-10-22linux-user: Emulate /proc/self/maps under mmap_lockIlya Leoshkevich1-1/+3
If one thread modifies the mappings and another thread prints them, a situation may occur that the printer thread sees a guest mapping without a corresponding host mapping, leading to a crash in open_self_maps_2(). Cc: qemu-stable@nongnu.org Fixes: 7b7a3366e142 ("linux-user: Use walk_memory_regions for open_self_maps") Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-ID: <20241014203441.387560-1-iii@linux.ibm.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-10-21linux-user: Clean up unused headerGustavo Romero1-1/+0
Clean up unused (already commented-out) header from syscall.c. Signed-off-by: Gustavo Romero <gustavo.romero@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Michael Tokarev <mjt@tls.msk.ru> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
generated by cgit v1.1 at 2025-09-19 03:26:42 +0000