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bh=OzSd66vMiAGfWp3SjT783MBf4FZiMzQ6hwrmJytEckg=; b=KMDRPsqS6IDbxPw+hL8nW/yAnKcRrpc8HRmlBoSK5qN6cLbdK8izEtyXdgWr8AXNv4WM0h lxR56Nf/5L5oWZa0/qD3zaGE1c9yZ3ElGtv//DGn9QjWTBNU5L2x7Qtg+P8hzWvncFVltg d8b2/oGGQAhI9uzWenkvS0yezhEvMQ4= X-MC-Unique: Dfl41vLYOuqBMYLlAUmkDg-1 From: Gavin Shan To: qemu-arm@nongnu.org Cc: qemu-devel@nongnu.org, peter.maydell@linaro.org, richard.henderson@linaro.org, eric.auger@redhat.com, cohuck@redhat.com, zhenyzha@redhat.com, shan.gavin@gmail.com Subject: [PATCH 2/2] hw/arm/virt: Warn when high memory region is disabled Date: Tue, 2 Aug 2022 14:45:29 +0800 Message-Id: <20220802064529.547361-3-gshan@redhat.com> In-Reply-To: <20220802064529.547361-1-gshan@redhat.com> References: <20220802064529.547361-1-gshan@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 2.85 on 10.11.54.10 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=170.10.133.124; envelope-from=gshan@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -21 X-Spam_score: -2.2 X-Spam_bar: -- X-Spam_report: (-2.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.082, 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, 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 @redhat.com) X-ZM-MESSAGEID: 1659415770035100005 Content-Type: text/plain; charset="utf-8" When one specific high memory region is disabled due to the PA limit, it'd better to warn user about that. The warning messages help to identify the cause in some cases. For example, PCIe device that has large MMIO bar, to be covered by PCIE_MMIO high memory region, won't work properly if PCIE_MMIO high memory region is disabled due to the PA limit. Signed-off-by: Gavin Shan --- hw/arm/virt.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/hw/arm/virt.c b/hw/arm/virt.c index bc0cd218f9..c91756e33d 100644 --- a/hw/arm/virt.c +++ b/hw/arm/virt.c @@ -1691,6 +1691,7 @@ static uint64_t virt_cpu_mp_affinity(VirtMachineState= *vms, int idx) static void virt_memmap_fits(VirtMachineState *vms, int index, bool *enabled, hwaddr *base, int pa_bits) { + const char *region_name; hwaddr size =3D extended_memmap[index].size; =20 /* The region will be disabled if its size isn't given */ @@ -1713,6 +1714,23 @@ static void virt_memmap_fits(VirtMachineState *vms, = int index, vms->highest_gpa =3D *base + size - 1; =20 *base =3D *base + size; + } else { + switch (index) { + case VIRT_HIGH_GIC_REDIST2: + region_name =3D "GIC_REDIST2"; + break; + case VIRT_HIGH_PCIE_ECAM: + region_name =3D "PCIE_ECAM"; + break; + case VIRT_HIGH_PCIE_MMIO: + region_name =3D "PCIE_MMIO"; + break; + default: + region_name =3D "unknown"; + } + + warn_report("Disabled %s high memory region due to PA limit", + region_name); } } =20 --=20 2.23.0