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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a02:6b8:c0e:500:1:45:d181:df01; envelope-from=d-tatianin@yandex-team.ru; helo=forwardcorp1a.mail.yandex.net X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @yandex-team.ru) X-ZM-MESSAGEID: 1737638497416019000 Content-Type: text/plain; charset="utf-8" Replace the boolean value enable_mlock with an enum and add a helper to decide whether we should be calling os_mlock. This is a stepping stone towards introducing a new mlock mode, which will be the third possible state of this enum. Reviewed-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Peter Xu Signed-off-by: Daniil Tatianin --- hw/virtio/virtio-mem.c | 2 +- include/system/system.h | 10 +++++++++- migration/postcopy-ram.c | 2 +- system/globals.c | 7 ++++++- system/vl.c | 9 +++++++-- 5 files changed, 24 insertions(+), 6 deletions(-) diff --git a/hw/virtio/virtio-mem.c b/hw/virtio/virtio-mem.c index b1a003736b..7b140add76 100644 --- a/hw/virtio/virtio-mem.c +++ b/hw/virtio/virtio-mem.c @@ -991,7 +991,7 @@ static void virtio_mem_device_realize(DeviceState *dev,= Error **errp) return; } =20 - if (enable_mlock) { + if (should_mlock(mlock_state)) { error_setg(errp, "Incompatible with mlock"); return; } diff --git a/include/system/system.h b/include/system/system.h index 0cbb43ec30..dc7628357a 100644 --- a/include/system/system.h +++ b/include/system/system.h @@ -44,10 +44,18 @@ extern int display_opengl; extern const char *keyboard_layout; extern int old_param; extern uint8_t *boot_splash_filedata; -extern bool enable_mlock; extern bool enable_cpu_pm; extern QEMUClockType rtc_clock; =20 +typedef enum { + MLOCK_OFF =3D 0, + MLOCK_ON, +} MlockState; + +bool should_mlock(MlockState); + +extern MlockState mlock_state; + #define MAX_OPTION_ROMS 16 typedef struct QEMUOptionRom { const char *name; diff --git a/migration/postcopy-ram.c b/migration/postcopy-ram.c index fc4d8a10df..04068ee039 100644 --- a/migration/postcopy-ram.c +++ b/migration/postcopy-ram.c @@ -651,7 +651,7 @@ int postcopy_ram_incoming_cleanup(MigrationIncomingStat= e *mis) mis->have_fault_thread =3D false; } =20 - if (enable_mlock) { + if (should_mlock(mlock_state)) { if (os_mlock(false) < 0) { error_report("mlock: %s", strerror(errno)); /* diff --git a/system/globals.c b/system/globals.c index 4867c93ca6..adeff38348 100644 --- a/system/globals.c +++ b/system/globals.c @@ -31,10 +31,15 @@ #include "system/cpus.h" #include "system/system.h" =20 +bool should_mlock(MlockState state) +{ + return state =3D=3D MLOCK_ON; +} + enum vga_retrace_method vga_retrace_method =3D VGA_RETRACE_DUMB; int display_opengl; const char* keyboard_layout; -bool enable_mlock; +MlockState mlock_state; bool enable_cpu_pm; int autostart =3D 1; int vga_interface_type =3D VGA_NONE; diff --git a/system/vl.c b/system/vl.c index faa50c39df..c26d728e22 100644 --- a/system/vl.c +++ b/system/vl.c @@ -792,7 +792,7 @@ static QemuOptsList qemu_run_with_opts =3D { =20 static void realtime_init(void) { - if (enable_mlock) { + if (should_mlock(mlock_state)) { if (os_mlock(false) < 0) { error_report("locking memory failed"); exit(1); @@ -1850,13 +1850,18 @@ static void object_option_parse(const char *str) static void overcommit_parse(const char *str) { QemuOpts *opts; + bool enable_mlock; =20 opts =3D qemu_opts_parse_noisily(qemu_find_opts("overcommit"), str, false); if (!opts) { exit(1); } - enable_mlock =3D qemu_opt_get_bool(opts, "mem-lock", enable_mlock); + + enable_mlock =3D qemu_opt_get_bool(opts, "mem-lock", + should_mlock(mlock_state)); + mlock_state =3D enable_mlock ? MLOCK_ON : MLOCK_OFF; + enable_cpu_pm =3D qemu_opt_get_bool(opts, "cpu-pm", enable_cpu_pm); } =20 --=20 2.34.1