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[71.212.47.143]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-b15fa907fcdsm119775a12.54.2025.04.23.17.56.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 23 Apr 2025 17:56:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1745456208; x=1746061008; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=2WoakTEoTh5W+Edqv/m7cqa7TN4j7HTie5YrJRYbIMU=; b=seyH1gVKy5vzE/OlWmJxQ8KRoUIVeDACDqtjeD5YeekRsaAi3mnNAiSXkB4i6rVbU6 jo8m7cdAB/iX44ZFIjKmmjWPmoz451tVHHs9b8CTAvSDYUMTJpE/G8akULl6uFemOhc+ nFsugiV9/T8rPTKY9OJRzkb9UptavdolwYvMMTfOHW89980ohmGYRcOSZ+3L09AOCfy9 mMqnQFKk98fEMgepAWIIlwhHOFv27llkOwp62it2YorpTVfxhXFg0gzggDsoHbldohig 07e1BzqKHiW7FmXfTOYQleMHKuT44gE1UwJJaZefxR8/zyYS5r0ZQoOxLlwUjvvbbdVW JCag== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1745456208; x=1746061008; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=2WoakTEoTh5W+Edqv/m7cqa7TN4j7HTie5YrJRYbIMU=; b=I7TTekuts1kttTzI0oMDZADL95y8D2kEQl5EOTMpECulrd4SJz7I08+NZuhBA4dOLk lKx0auLQNHgH4XhB3Wjkm9+C98F6szICc+b7E+lIJGS4bKabuQ8MlXbuaLP+kXCD7NrM KNTeMU1fuDpod2ZMFP5+96t1B1i8I99kKh4U4iSx9EOcP+RT7YgIvkNeWHWo9Bm68SEP 6EbiFYcfiTAsG3gxQ8soW9DzP3IUR5NiJh4DZRq5qM/1vuQgmQt6WY1KkHG0msvwXyr9 H8r3nZr+uByYyoY4dfBLkxHN5O4+GQbTM0qoVZ6vTMEegnFAvYiw1zoN7BRg5QhglqB1 JgJQ== X-Gm-Message-State: AOJu0YwptTCkdC0t44qfl1+5xpZ8HFTlQNqHX+tb4xDWvuZ+x9TuAKKP eumlf59+xcFiXyw3eFLNP/OOlsW71kfEhEoOlRaggkaBQLAB4ZwYFLJV0SNHZ8fPeL7AqPdfXfy + X-Gm-Gg: ASbGncvBSnQsRbU4pmLOlfQO4EpefmzGrTMSwgt+qaozc5LHgk+JopyGMfedr6gqEiW 7+HLJTlqkCXCiZ41nytJd+s3iHkHaI4+oU0DgPH3rCY1KRPEawpgAl6YWn4DH4VmEF7173Xm7Hh z6szdkPsfOVqywnjB53x1vdjxe/DEv/YtIC5K+Nb/elCfQpm2V7Ho2VW+8JVfj+bdDf1HBN/yjW PTU8XyuLSOAa8ed+ivKJOqRA5M14QkPYgNLw542PBeyCLp/+4HMrjud1XX+6cBwYq+P+F90PV0L 0uNZjOLkZpRZ5NCwylh6BsDprr9xp7s7FgWxNytdvU3kiwhht3TtBZ4UgaZfqLkQ4qo2qjIjOdU 0MR2guazHbg== X-Google-Smtp-Source: AGHT+IE2dpOp7GxtEeMH4fe2lu+qKwfBunALNGa/lbVM8NCSuCjrauP8TbYg08V/2gjMwPmDUa4iLg== X-Received: by 2002:a05:6a21:6d8d:b0:1f3:47d6:aa05 with SMTP id adf61e73a8af0-20444d275ccmr1038104637.0.1745456207751; Wed, 23 Apr 2025 17:56:47 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: Pierrick Bouvier Subject: [PULL 099/148] page-vary: Move and rename qemu_target_page_bits_min Date: Wed, 23 Apr 2025 17:48:44 -0700 Message-ID: <20250424004934.598783-100-richard.henderson@linaro.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250424004934.598783-1-richard.henderson@linaro.org> References: <20250424004934.598783-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::42f; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x42f.google.com 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 @linaro.org) X-ZM-MESSAGEID: 1745457660228019000 Content-Type: text/plain; charset="utf-8" Rename to migration_legacy_page_bits, to make it clear that we cannot change the value without causing a migration break. Move to page-vary.h and page-vary-target.c. Define via TARGET_PAGE_BITS if not TARGET_PAGE_BITS_VARY. Reviewed-by: Pierrick Bouvier Signed-off-by: Richard Henderson --- include/exec/page-vary.h | 9 +++++++++ include/exec/target_page.h | 1 - migration/savevm.c | 6 +++--- page-target.c | 5 ----- page-vary-target.c | 9 +++++++++ 5 files changed, 21 insertions(+), 9 deletions(-) diff --git a/include/exec/page-vary.h b/include/exec/page-vary.h index 54ddde308a..101c25911c 100644 --- a/include/exec/page-vary.h +++ b/include/exec/page-vary.h @@ -49,4 +49,13 @@ bool set_preferred_target_page_bits(int bits); */ void finalize_target_page_bits(void); =20 +/** + * migration_legacy_page_bits + * + * For migration compatibility with qemu v2.9, prior to the introduction + * of the configuration/target-page-bits section, return the value of + * TARGET_PAGE_BITS that the target had then. + */ +int migration_legacy_page_bits(void); + #endif /* EXEC_PAGE_VARY_H */ diff --git a/include/exec/target_page.h b/include/exec/target_page.h index 8e89e5cbe6..e4bd7f7767 100644 --- a/include/exec/target_page.h +++ b/include/exec/target_page.h @@ -63,7 +63,6 @@ static inline int qemu_target_page_bits(void) return TARGET_PAGE_BITS; } =20 -int qemu_target_page_bits_min(void); size_t qemu_target_pages_to_MiB(size_t pages); =20 #endif diff --git a/migration/savevm.c b/migration/savevm.c index c33200a33f..0c12e373b4 100644 --- a/migration/savevm.c +++ b/migration/savevm.c @@ -50,6 +50,7 @@ #include "system/cpus.h" #include "system/memory.h" #include "exec/target_page.h" +#include "exec/page-vary.h" #include "trace.h" #include "qemu/iov.h" #include "qemu/job.h" @@ -339,7 +340,7 @@ static int configuration_pre_load(void *opaque) * predates the variable-target-page-bits support and is using the * minimum possible value for this CPU. */ - state->target_page_bits =3D qemu_target_page_bits_min(); + state->target_page_bits =3D migration_legacy_page_bits(); return 0; } =20 @@ -462,8 +463,7 @@ static const VMStateInfo vmstate_info_capability =3D { */ static bool vmstate_target_page_bits_needed(void *opaque) { - return qemu_target_page_bits() - > qemu_target_page_bits_min(); + return qemu_target_page_bits() > migration_legacy_page_bits(); } =20 static const VMStateDescription vmstate_target_page_bits =3D { diff --git a/page-target.c b/page-target.c index 321e43d06f..8fcd5443b5 100644 --- a/page-target.c +++ b/page-target.c @@ -9,11 +9,6 @@ #include "qemu/osdep.h" #include "exec/target_page.h" =20 -int qemu_target_page_bits_min(void) -{ - return TARGET_PAGE_BITS_MIN; -} - /* Convert target pages to MiB (2**20). */ size_t qemu_target_pages_to_MiB(size_t pages) { diff --git a/page-vary-target.c b/page-vary-target.c index 84ddeb7c26..6251d948cf 100644 --- a/page-vary-target.c +++ b/page-vary-target.c @@ -23,6 +23,15 @@ #include "exec/page-vary.h" #include "exec/target_page.h" =20 +int migration_legacy_page_bits(void) +{ +#ifdef TARGET_PAGE_BITS_VARY + return TARGET_PAGE_BITS_MIN; +#else + return TARGET_PAGE_BITS; +#endif +} + bool set_preferred_target_page_bits(int bits) { #ifdef TARGET_PAGE_BITS_VARY --=20 2.43.0