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Tsirkin" , Richard Henderson , Alex Williamson , Paolo Bonzini , Ani Sinha , Marcel Apfelbaum , "Dr. David Alan Gilbert" , Suravee Suthikulpanit , Joao Martins , Jonathan Cameron Subject: [PATCH v8 06/11] i386/pc: factor out cxl range start to helper Date: Fri, 15 Jul 2022 18:16:23 +0100 Message-Id: <20220715171628.21437-7-joao.m.martins@oracle.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20220715171628.21437-1-joao.m.martins@oracle.com> References: <20220715171628.21437-1-joao.m.martins@oracle.com> X-Proofpoint-GUID: Mz_3NnyeNYsFwTDlG2bTGjFd2lVvkpiW X-Proofpoint-ORIG-GUID: Mz_3NnyeNYsFwTDlG2bTGjFd2lVvkpiW 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=205.220.177.32; envelope-from=joao.m.martins@oracle.com; helo=mx0b-00069f02.pphosted.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_MED=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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" X-ZohoMail-DKIM: pass (identity @oracle.com) X-ZM-MESSAGEID: 1657905929352100003 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Factor out the calculation of the base address of the memory region. It will be used later on for the cxl range end counterpart calculation and as well in pc_memory_init() CXL memory region initialization, thus avoiding duplication. Cc: Jonathan Cameron Signed-off-by: Joao Martins Acked-by: Igor Mammedov --- hw/i386/pc.c | 26 +++++++++++++++++--------- 1 file changed, 17 insertions(+), 9 deletions(-) diff --git a/hw/i386/pc.c b/hw/i386/pc.c index 1f42f194d7b7..3fdcab4bb4f3 100644 --- a/hw/i386/pc.c +++ b/hw/i386/pc.c @@ -825,6 +825,22 @@ static hwaddr pc_above_4g_end(PCMachineState *pcms) return x86ms->above_4g_mem_start + x86ms->above_4g_mem_size; } =20 +static uint64_t pc_get_cxl_range_start(PCMachineState *pcms) +{ + PCMachineClass *pcmc =3D PC_MACHINE_GET_CLASS(pcms); + MachineState *machine =3D MACHINE(pcms); + hwaddr cxl_base; + + if (pcmc->has_reserved_memory && machine->device_memory->base) { + cxl_base =3D machine->device_memory->base + + memory_region_size(&machine->device_memory->mr); + } else { + cxl_base =3D pc_above_4g_end(pcms); + } + + return cxl_base; +} + static uint64_t pc_get_cxl_range_end(PCMachineState *pcms) { uint64_t start =3D 0; @@ -946,15 +962,7 @@ void pc_memory_init(PCMachineState *pcms, MemoryRegion *mr =3D &pcms->cxl_devices_state.host_mr; hwaddr cxl_size =3D MiB; =20 - if (pcmc->has_reserved_memory && machine->device_memory->base) { - cxl_base =3D machine->device_memory->base - + memory_region_size(&machine->device_memory->mr); - } else if (pcms->sgx_epc.size !=3D 0) { - cxl_base =3D sgx_epc_above_4g_end(&pcms->sgx_epc); - } else { - cxl_base =3D pc_above_4g_end(pcms); - } - + cxl_base =3D pc_get_cxl_range_start(pcms); e820_add_entry(cxl_base, cxl_size, E820_RESERVED); memory_region_init(mr, OBJECT(machine), "cxl_host_reg", cxl_size); memory_region_add_subregion(system_memory, cxl_base, mr); --=20 2.17.2