From fd487d7fc78e168f530096f63a3159d7ebde4e5d Mon Sep 17 00:00:00 2001 From: Arun Menon Date: Thu, 18 Sep 2025 20:53:35 +0530 Subject: [PATCH] migration: push Error **errp into loadvm_postcopy_ram_handle_discard() MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit This is an incremental step in converting vmstate loading code to report error via Error objects instead of directly printing it to console/monitor. It is ensured that loadvm_postcopy_ram_handle_discard() must report an error in errp, in case of failure. Reviewed-by: Fabiano Rosas Reviewed-by: Marc-André Lureau Signed-off-by: Arun Menon Tested-by: Fabiano Rosas Reviewed-by: Akihiko Odaki Link: https://lore.kernel.org/r/20250918-propagate_tpm_error-v14-18-36f11a6fb9d3@redhat.com Signed-off-by: Peter Xu --- migration/savevm.c | 26 +++++++++++++------------- 1 file changed, 13 insertions(+), 13 deletions(-) diff --git a/migration/savevm.c b/migration/savevm.c index f7947160fd5..b80da04b47f 100644 --- a/migration/savevm.c +++ b/migration/savevm.c @@ -2004,7 +2004,7 @@ static int loadvm_postcopy_handle_advise(MigrationIncomingState *mis, * There can be 0..many of these messages, each encoding multiple pages. */ static int loadvm_postcopy_ram_handle_discard(MigrationIncomingState *mis, - uint16_t len) + uint16_t len, Error **errp) { int tmp; char ramid[256]; @@ -2017,6 +2017,7 @@ static int loadvm_postcopy_ram_handle_discard(MigrationIncomingState *mis, /* 1st discard */ tmp = postcopy_ram_prepare_discard(mis); if (tmp) { + error_setg(errp, "Failed to prepare for RAM discard: %d", tmp); return tmp; } break; @@ -2026,8 +2027,9 @@ static int loadvm_postcopy_ram_handle_discard(MigrationIncomingState *mis, break; default: - error_report("CMD_POSTCOPY_RAM_DISCARD in wrong postcopy state (%d)", - ps); + error_setg(errp, + "CMD_POSTCOPY_RAM_DISCARD in wrong postcopy state (%d)", + ps); return -1; } /* We're expecting a @@ -2036,29 +2038,30 @@ static int loadvm_postcopy_ram_handle_discard(MigrationIncomingState *mis, * then at least 1 16 byte chunk */ if (len < (1 + 1 + 1 + 1 + 2 * 8)) { - error_report("CMD_POSTCOPY_RAM_DISCARD invalid length (%d)", len); + error_setg(errp, "CMD_POSTCOPY_RAM_DISCARD invalid length (%d)", len); return -1; } tmp = qemu_get_byte(mis->from_src_file); if (tmp != postcopy_ram_discard_version) { - error_report("CMD_POSTCOPY_RAM_DISCARD invalid version (%d)", tmp); + error_setg(errp, "CMD_POSTCOPY_RAM_DISCARD invalid version (%d)", tmp); return -1; } if (!qemu_get_counted_string(mis->from_src_file, ramid)) { - error_report("CMD_POSTCOPY_RAM_DISCARD Failed to read RAMBlock ID"); + error_setg(errp, + "CMD_POSTCOPY_RAM_DISCARD Failed to read RAMBlock ID"); return -1; } tmp = qemu_get_byte(mis->from_src_file); if (tmp != 0) { - error_report("CMD_POSTCOPY_RAM_DISCARD missing nil (%d)", tmp); + error_setg(errp, "CMD_POSTCOPY_RAM_DISCARD missing nil (%d)", tmp); return -1; } len -= 3 + strlen(ramid); if (len % 16) { - error_report("CMD_POSTCOPY_RAM_DISCARD invalid length (%d)", len); + error_setg(errp, "CMD_POSTCOPY_RAM_DISCARD invalid length (%d)", len); return -1; } trace_loadvm_postcopy_ram_handle_discard_header(ramid, len); @@ -2070,6 +2073,7 @@ static int loadvm_postcopy_ram_handle_discard(MigrationIncomingState *mis, len -= 16; int ret = ram_discard_range(ramid, start_addr, block_length); if (ret) { + error_setg(errp, "Failed to discard RAM range %s: %d", ramid, ret); return ret; } } @@ -2629,11 +2633,7 @@ static int loadvm_process_command(QEMUFile *f, Error **errp) return loadvm_postcopy_handle_run(mis, errp); case MIG_CMD_POSTCOPY_RAM_DISCARD: - ret = loadvm_postcopy_ram_handle_discard(mis, len); - if (ret < 0) { - error_setg(errp, "Failed to load device state command: %d", ret); - } - return ret; + return loadvm_postcopy_ram_handle_discard(mis, len, errp); case MIG_CMD_POSTCOPY_RESUME: loadvm_postcopy_handle_resume(mis); -- 2.47.3