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Tsirkin" , Peter Maydell , Marcel Apfelbaum , Paolo Bonzini , Phil Dennis-Jordan , Alexander Graf , Igor Mammedov , Cameron Esfahani , Akihiko Odaki , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , qemu-arm@nongnu.org, Shannon Zhao , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , Zhao Liu , Roman Bolshakov , Ani Sinha , Pedro Barbuda , Richard Henderson , Yanan Wang , Pierrick Bouvier Subject: [PATCH v17 13/21] whpx: change memory management logic Date: Wed, 21 Jan 2026 14:41:04 +0100 Message-ID: <20260121134114.9781-14-mohamed@unpredictable.fr> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20260121134114.9781-1-mohamed@unpredictable.fr> References: <20260121134114.9781-1-mohamed@unpredictable.fr> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Proofpoint-GUID: jXxnJoAPNk6PkqbYyaMzh6RNlwfxvTR- X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMTIxMDExNSBTYWx0ZWRfXyKZPxJ5guhV7 OZYON2QojKWRdCS74N2T1AyXUU0B7hnQLkB7Q2+88Wf/g/BDmTQ4FaONoaixSzZUdv302fi1us9 xLt0eCJSYPoxR7OkQsebAsrwu/qMD9/LmKJQSch5wM7S9Zga4oCauc6QtBPzmhBji3GiUESp4k4 zZspH1Qn5GTeDnhEIsi4Vh7cVMRCpbomlAmMoXpiFin8sKH0W2nv2166slhMHK3bGod/WzD+iGS 032eKxXnB8B2YUgZiuY/HarJZ3FzFLbMeM16zSYSSW/9yW93kTVnKlQId1HoJAMGOlLCMBOk9i1 2mOzTEn0N9qiclqAjI4 X-Proofpoint-ORIG-GUID: jXxnJoAPNk6PkqbYyaMzh6RNlwfxvTR- X-Authority-Info-Out: v=2.4 cv=Y+P1cxeN c=1 sm=1 tr=0 ts=6970d7a7 cx=c_apl:c_apl_out:c_pps a=bsP7O+dXZ5uKcj+dsLqiMw==:117 a=bsP7O+dXZ5uKcj+dsLqiMw==:17 a=IkcTkHD0fZMA:10 a=vUbySO9Y5rIA:10 a=VkNPw1HP01LnGYTKEx00:22 a=KKAkSRfTAAAA:8 a=Wq2Hhhcarr-WV7vA_m4A:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=cvBusfyB2V15izCimMoJ:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.20,FMLib:17.12.100.49 definitions=2026-01-21_01,2026-01-20_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 adultscore=0 malwarescore=0 mlxscore=0 clxscore=1030 suspectscore=0 spamscore=0 mlxlogscore=999 phishscore=0 bulkscore=0 classifier=spam authscore=0 adjust=0 reason=mlx scancount=1 engine=8.22.0-2510240001 definitions=main-2601210115 X-JNJ: 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 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 (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=57.103.87.23; envelope-from=mohamed@unpredictable.fr; helo=outbound.qs.icloud.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, 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_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_PASS=-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: qemu development 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 @unpredictable.fr) X-ZM-MESSAGEID: 1769003291877154100 This allows edk2 to work on Arm, although u-boot is still not functional. Signed-off-by: Mohamed Mediouni Reviewed-by: Pierrick Bouvier Reviewed-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Akihiko Odaki --- accel/whpx/whpx-common.c | 97 +++++++++++++++------------------------- 1 file changed, 36 insertions(+), 61 deletions(-) diff --git a/accel/whpx/whpx-common.c b/accel/whpx/whpx-common.c index 827f50f3e0..f018a8f5c7 100644 --- a/accel/whpx/whpx-common.c +++ b/accel/whpx/whpx-common.c @@ -255,89 +255,64 @@ void whpx_vcpu_kick(CPUState *cpu) * Memory support. */ =20 -static void whpx_update_mapping(hwaddr start_pa, ram_addr_t size, - void *host_va, int add, int rom, - const char *name) +static void whpx_set_phys_mem(MemoryRegionSection *section, bool add) { struct whpx_state *whpx =3D &whpx_global; + MemoryRegion *area =3D section->mr; + bool writable =3D !area->readonly && !area->rom_device; + WHV_MAP_GPA_RANGE_FLAGS flags; + uint64_t page_size =3D qemu_real_host_page_size(); + uint64_t gva =3D section->offset_within_address_space; + uint64_t size =3D int128_get64(section->size); HRESULT hr; + void *mem; =20 - /* - if (add) { - printf("WHPX: ADD PA:%p Size:%p, Host:%p, %s, '%s'\n", - (void*)start_pa, (void*)size, host_va, - (rom ? "ROM" : "RAM"), name); - } else { - printf("WHPX: DEL PA:%p Size:%p, Host:%p, '%s'\n", - (void*)start_pa, (void*)size, host_va, name); - } - */ - - if (add) { - hr =3D whp_dispatch.WHvMapGpaRange(whpx->partition, - host_va, - start_pa, - size, - (WHvMapGpaRangeFlagRead | - WHvMapGpaRangeFlagExecute | - (rom ? 0 : WHvMapGpaRangeFlagWri= te))); - } else { - hr =3D whp_dispatch.WHvUnmapGpaRange(whpx->partition, - start_pa, - size); - } - - if (FAILED(hr)) { - error_report("WHPX: Failed to %s GPA range '%s' PA:%p, Size:%p byt= es," - " Host:%p, hr=3D%08lx", - (add ? "MAP" : "UNMAP"), name, - (void *)(uintptr_t)start_pa, (void *)size, host_va, h= r); + if (!memory_region_is_ram(area)) { + if (writable) { + return; + } else if (!memory_region_is_romd(area)) { + add =3D false; + } } -} - -static void whpx_process_section(MemoryRegionSection *section, int add) -{ - MemoryRegion *mr =3D section->mr; - hwaddr start_pa =3D section->offset_within_address_space; - ram_addr_t size =3D int128_get64(section->size); - unsigned int delta; - uint64_t host_va; =20 - if (!memory_region_is_ram(mr)) { - return; + if (!QEMU_IS_ALIGNED(size, page_size) || + !QEMU_IS_ALIGNED(gva, page_size)) { + /* Not page aligned, so we can not map as RAM */ + add =3D false; } =20 - delta =3D qemu_real_host_page_size() - (start_pa & ~qemu_real_host_pag= e_mask()); - delta &=3D ~qemu_real_host_page_mask(); - if (delta > size) { - return; - } - start_pa +=3D delta; - size -=3D delta; - size &=3D qemu_real_host_page_mask(); - if (!size || (start_pa & ~qemu_real_host_page_mask())) { + if (!add) { + hr =3D whp_dispatch.WHvUnmapGpaRange(whpx->partition, + gva, size); + if (FAILED(hr)) { + error_report("WHPX: failed to unmap GPA range"); + abort(); + } return; } =20 - host_va =3D (uintptr_t)memory_region_get_ram_ptr(mr) - + section->offset_within_region + delta; + flags =3D WHvMapGpaRangeFlagRead | WHvMapGpaRangeFlagExecute + | (writable ? WHvMapGpaRangeFlagWrite : 0); + mem =3D memory_region_get_ram_ptr(area) + section->offset_within_regio= n; =20 - whpx_update_mapping(start_pa, size, (void *)(uintptr_t)host_va, add, - memory_region_is_rom(mr), mr->name); + hr =3D whp_dispatch.WHvMapGpaRange(whpx->partition, + mem, gva, size, flags); + if (FAILED(hr)) { + error_report("WHPX: failed to map GPA range"); + abort(); + } } =20 static void whpx_region_add(MemoryListener *listener, MemoryRegionSection *section) { - memory_region_ref(section->mr); - whpx_process_section(section, 1); + whpx_set_phys_mem(section, true); } =20 static void whpx_region_del(MemoryListener *listener, MemoryRegionSection *section) { - whpx_process_section(section, 0); - memory_region_unref(section->mr); + whpx_set_phys_mem(section, false); } =20 static void whpx_transaction_begin(MemoryListener *listener) --=20 2.50.1 (Apple Git-155)