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bh=4tYibFNP5ieSHgMLx+ThjpwiEybf0Ik8m2mbnjrSBaM=; b=FStyX38N6ZP5UcrjrxZufQetmamQeBbEjVwPXSVt2Pzqx4HzKZhinjq9zSpPeBeZ7kU5sV c8ek7dPdMkRbT/+n8nA/BcbYoT1QD49noYmYexy7d/U2540CS1Ya9knnlBM100mKFoRZBz DU1lHBCXqh2AVM92Nd89CxcoS6kLVdU= X-MC-Unique: aG3kqZMZPDuIhpoNh2UqdA-1 From: Paolo Bonzini To: qemu-devel@nongnu.org Subject: [PULL 12/45] memory: allow creating MemoryRegions before accelerators Date: Tue, 15 Dec 2020 12:54:12 -0500 Message-Id: <20201215175445.1272776-13-pbonzini@redhat.com> In-Reply-To: <20201215175445.1272776-1-pbonzini@redhat.com> References: <20201215175445.1272776-1-pbonzini@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=pbonzini@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com 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=216.205.24.124; envelope-from=pbonzini@redhat.com; helo=us-smtp-delivery-124.mimecast.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, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Igor Mammedov Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @redhat.com) Content-Type: text/plain; charset="utf-8" Compute the DIRTY_MEMORY_CODE bit in memory_region_get_dirty_log_mask instead of memory_region_init_*. This makes it possible to allocate memory backend objects at any time. Reviewed-by: Igor Mammedov Signed-off-by: Paolo Bonzini --- softmmu/memory.c | 12 ++++++------ softmmu/vl.c | 6 +----- 2 files changed, 7 insertions(+), 11 deletions(-) diff --git a/softmmu/memory.c b/softmmu/memory.c index 22bacbbc78..333e1ed7b0 100644 --- a/softmmu/memory.c +++ b/softmmu/memory.c @@ -1548,7 +1548,6 @@ void memory_region_init_ram_shared_nomigrate(MemoryRe= gion *mr, mr->terminates =3D true; mr->destructor =3D memory_region_destructor_ram; mr->ram_block =3D qemu_ram_alloc(size, share, mr, &err); - mr->dirty_log_mask =3D tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0; if (err) { mr->size =3D int128_zero(); object_unparent(OBJECT(mr)); @@ -1573,7 +1572,6 @@ void memory_region_init_resizeable_ram(MemoryRegion *= mr, mr->destructor =3D memory_region_destructor_ram; mr->ram_block =3D qemu_ram_alloc_resizeable(size, max_size, resized, mr, &err); - mr->dirty_log_mask =3D tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0; if (err) { mr->size =3D int128_zero(); object_unparent(OBJECT(mr)); @@ -1598,7 +1596,6 @@ void memory_region_init_ram_from_file(MemoryRegion *m= r, mr->destructor =3D memory_region_destructor_ram; mr->align =3D align; mr->ram_block =3D qemu_ram_alloc_from_file(size, mr, ram_flags, path, = &err); - mr->dirty_log_mask =3D tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0; if (err) { mr->size =3D int128_zero(); object_unparent(OBJECT(mr)); @@ -1622,7 +1619,6 @@ void memory_region_init_ram_from_fd(MemoryRegion *mr, mr->ram_block =3D qemu_ram_alloc_from_fd(size, mr, share ? RAM_SHARED : 0, fd, &err); - mr->dirty_log_mask =3D tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0; if (err) { mr->size =3D int128_zero(); object_unparent(OBJECT(mr)); @@ -1641,7 +1637,6 @@ void memory_region_init_ram_ptr(MemoryRegion *mr, mr->ram =3D true; mr->terminates =3D true; mr->destructor =3D memory_region_destructor_ram; - mr->dirty_log_mask =3D tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0; =20 /* qemu_ram_alloc_from_ptr cannot fail with ptr !=3D NULL. */ assert(ptr !=3D NULL); @@ -1661,7 +1656,7 @@ void memory_region_init_ram_device_ptr(MemoryRegion *= mr, mr->ops =3D &ram_device_mem_ops; mr->opaque =3D mr; mr->destructor =3D memory_region_destructor_ram; - mr->dirty_log_mask =3D tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0; + /* qemu_ram_alloc_from_ptr cannot fail with ptr !=3D NULL. */ assert(ptr !=3D NULL); mr->ram_block =3D qemu_ram_alloc_from_ptr(size, ptr, mr, &error_fatal); @@ -1819,6 +1814,11 @@ uint8_t memory_region_get_dirty_log_mask(MemoryRegio= n *mr) memory_region_is_iommu(mr))) { mask |=3D (1 << DIRTY_MEMORY_MIGRATION); } + + if (tcg_enabled() && rb) { + /* TCG only cares about dirty memory logging for RAM, not IOMMU. = */ + mask |=3D (1 << DIRTY_MEMORY_CODE); + } return mask; } =20 diff --git a/softmmu/vl.c b/softmmu/vl.c index 553482ec02..20db39b556 100644 --- a/softmmu/vl.c +++ b/softmmu/vl.c @@ -1714,11 +1714,7 @@ static bool object_create_early(const char *type, Qe= muOpts *opts) return false; } =20 - /* Memory allocation by backends needs to be done - * after configure_accelerator() (due to the tcg_enabled() - * checks at memory_region_init_*()). - * - * Also, allocation of large amounts of memory may delay + /* Allocation of large amounts of memory may delay * chardev initialization for too long, and trigger timeouts * on software that waits for a monitor socket to be created * (e.g. libvirt). --=20 2.26.2