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a="67857618" X-IronPort-AV: E=Sophos;i="6.15,193,1739865600"; d="scan'208";a="67857618" X-CSE-ConnectionGUID: uVjmCoGaRRmRYXxjCVAOLw== X-CSE-MsgGUID: 4g4q8ObRQZijpc802CGgiA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.15,193,1739865600"; d="scan'208";a="128405709" From: Chenyi Qiang To: David Hildenbrand , Alexey Kardashevskiy , Peter Xu , Gupta Pankaj , Paolo Bonzini , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Michael Roth Cc: Chenyi Qiang , qemu-devel@nongnu.org, kvm@vger.kernel.org, Williams Dan J , Peng Chao P , Gao Chao , Xu Yilun , Li Xiaoyao Subject: [PATCH v4 13/13] RAMBlock: Make guest_memfd require coordinate discard Date: Mon, 7 Apr 2025 15:49:33 +0800 Message-ID: <20250407074939.18657-14-chenyi.qiang@intel.com> X-Mailer: git-send-email 2.43.5 In-Reply-To: <20250407074939.18657-1-chenyi.qiang@intel.com> References: <20250407074939.18657-1-chenyi.qiang@intel.com> 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=198.175.65.9; envelope-from=chenyi.qiang@intel.com; helo=mgamail.intel.com X-Spam_score_int: -50 X-Spam_score: -5.1 X-Spam_bar: ----- X-Spam_report: (-5.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.659, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, 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 @intel.com) X-ZM-MESSAGEID: 1744012335308019100 Content-Type: text/plain; charset="utf-8" As guest_memfd is now managed by ram_block_attribute with PrivateSharedManager, only block uncoordinated discard. Signed-off-by: Chenyi Qiang --- Changes in v4: - Modify commit message (RamDiscardManager->PrivateSharedManager). Changes in v3: - No change. Changes in v2: - Change the ram_block_discard_require(false) to ram_block_coordinated_discard_require(false). --- system/physmem.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/system/physmem.c b/system/physmem.c index fb74321e10..5e72d2a544 100644 --- a/system/physmem.c +++ b/system/physmem.c @@ -1871,7 +1871,7 @@ static void ram_block_add(RAMBlock *new_block, Error = **errp) assert(kvm_enabled()); assert(new_block->guest_memfd < 0); =20 - ret =3D ram_block_discard_require(true); + ret =3D ram_block_coordinated_discard_require(true); if (ret < 0) { error_setg_errno(errp, -ret, "cannot set up private guest memory: discard = currently blocked"); @@ -1895,7 +1895,7 @@ static void ram_block_add(RAMBlock *new_block, Error = **errp) */ object_unref(OBJECT(new_block->ram_block_attribute)); close(new_block->guest_memfd); - ram_block_discard_require(false); + ram_block_coordinated_discard_require(false); qemu_mutex_unlock_ramlist(); goto out_free; } @@ -2155,7 +2155,7 @@ static void reclaim_ramblock(RAMBlock *block) ram_block_attribute_unrealize(block->ram_block_attribute); object_unref(OBJECT(block->ram_block_attribute)); close(block->guest_memfd); - ram_block_discard_require(false); + ram_block_coordinated_discard_require(false); } =20 g_free(block); --=20 2.43.5