From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 77629C87FCA for ; Thu, 31 Jul 2025 05:33:17 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1uhLrF-0001GR-MM; Thu, 31 Jul 2025 01:29:37 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1uhLpu-0007by-4X for qemu-devel@nongnu.org; Thu, 31 Jul 2025 01:28:14 -0400 Received: from p-east3-cluster2-host3-snip4-1.eps.apple.com ([57.103.87.152] helo=outbound.qs.icloud.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1uhLpr-0005nv-Qx for qemu-devel@nongnu.org; Thu, 31 Jul 2025 01:28:13 -0400 Received: from outbound.qs.icloud.com (unknown [127.0.0.2]) by p00-icloudmta-asmtp-us-east-2d-20-percent-1 (Postfix) with ESMTPS id 8CE68180012B; Thu, 31 Jul 2025 05:28:08 +0000 (UTC) Dkim-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=unpredictable.fr; s=sig1; bh=SPUPSB/xNUORagiGQbaHcpje+WodA55CW8qDQCYRNy8=; h=From:To:Subject:Date:Message-Id:MIME-Version:x-icloud-hme; b=fTfkxRHPLACl5o+/c894a8gjqOmhGcmq6R4OWWEBABI/+leeOmvzA+Q2cPvD1TYuakn6JbN+aVf0o9Cc0uwrTMymkuNXT9slvoGzLRzjjfbPkWOvtKDPbpxwlzl0WA2Ern+2yQCC5BxVj3J7ROstHpEyq5YxnNVbo4ZTx0strNBMalqTsuJ2DHv9wRG1LXJTOAsZ9G1OV+yrkjmDWp26XMNsduK1CafXs5A8kaBjTEw+LeQYoX08eiP4YCW3MssdUxjZcCSljVRS4ZkSR29/ooO3sWri7mYwSGQrUlCj0jrGL+pvCNFE0xlwQof2gxMSZBudiZ42CVMCujmPt5lTzg== X-Client-IP: 46.189.47.18 Received: from localhost.localdomain (qs-asmtp-me-k8s.p00.prod.me.com [17.57.155.37]) by p00-icloudmta-asmtp-us-east-2d-20-percent-1 (Postfix) with ESMTPSA id 729F6180009C; Thu, 31 Jul 2025 05:28:06 +0000 (UTC) From: Mohamed Mediouni To: qemu-devel@nongnu.org Cc: =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= , Paolo Bonzini , Sunil Muthuswamy , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Peter Maydell , qemu-arm@nongnu.org, Mohamed Mediouni Subject: [RFC 8/9] whpx: copy over memory tracking logic from hvf Date: Thu, 31 Jul 2025 07:27:52 +0200 Message-Id: <20250731052753.93255-9-mohamed@unpredictable.fr> X-Mailer: git-send-email 2.39.5 (Apple Git-154) In-Reply-To: <20250731052753.93255-1-mohamed@unpredictable.fr> References: <20250731052753.93255-1-mohamed@unpredictable.fr> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Proofpoint-GUID: YdbnKO6uxtkCa7DV_DzkLrvHqYzZFUVh X-Proofpoint-ORIG-GUID: YdbnKO6uxtkCa7DV_DzkLrvHqYzZFUVh X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNzMxMDAzNSBTYWx0ZWRfX4z8tjG6m0L9e xUq4zAyL2cNHcDy+kYkcLyQ4kk6kfUcP6fJx4ASfoIiq3Icn59ESPFNp2qNioqIpZAgke1I3FGI XQ6dyoimKMpQq5CvCtS7GvXJzWFZwhIOgmyf5j9mFqnubvKxciD6MCWmo2BjBTuAtLJNhiAD3TK f1XM7W54T7hAyzgR8JxTYHz5pq2ixP8aHVHEgDu6v908iqrkwgenaWm/sdNfCWmCJn/dq1lj05f hDYAyEyYSU63AF+tBjTGTGszNXXmUN6SbWcy2OcjUApp3tPHKr91YMhzRNRQXWSp28kiQZx/U= X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-07-31_01,2025-07-31_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 malwarescore=0 phishscore=0 clxscore=1030 mlxlogscore=999 suspectscore=0 bulkscore=0 spamscore=0 mlxscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.22.0-2506270000 definitions=main-2507310035 Received-SPF: pass client-ip=57.103.87.152; envelope-from=mohamed@unpredictable.fr; helo=outbound.qs.icloud.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, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org This allows edk2 to work, although u-boot is still not functional. Signed-off-by: Mohamed Mediouni --- accel/whpx/whpx-common.c | 198 ++++++++++++++++++++++++++++----------- 1 file changed, 144 insertions(+), 54 deletions(-) diff --git a/accel/whpx/whpx-common.c b/accel/whpx/whpx-common.c index 58fd6287ed..19415767e4 100644 --- a/accel/whpx/whpx-common.c +++ b/accel/whpx/whpx-common.c @@ -265,89 +265,171 @@ void whpx_vcpu_kick(CPUState *cpu) * Memory support. */ -static void whpx_update_mapping(hwaddr start_pa, ram_addr_t size, - void *host_va, int add, int rom, - const char *name) + /* hvf_slot flags */ +#define WHPX_SLOT_LOG (1 << 0) +typedef struct whpx_slot { + uint64_t start; + uint64_t size; + uint8_t *mem; + int slot_id; + uint32_t flags; + MemoryRegion *region; +} whpx_slot; + +typedef struct WHPXState { + whpx_slot slots[32]; + int num_slots; +} WHPXState; + + WHPXState *whpx_state; + + struct mac_slot { + int present; + uint64_t size; + uint64_t gpa_start; + uint64_t gva; +}; + +struct mac_slot mac_slots[32]; + +static int do_hvf_set_memory(whpx_slot *slot, WHV_MAP_GPA_RANGE_FLAGS flags) { struct whpx_state *whpx = &whpx_global; + struct mac_slot *macslot; HRESULT hr; - /* - 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); + macslot = &mac_slots[slot->slot_id]; + + if (macslot->present) { + if (macslot->size != slot->size) { + macslot->present = 0; + hr = whp_dispatch.WHvUnmapGpaRange(whpx->partition, macslot->gpa_start, macslot->size); + if (FAILED(hr)) { + abort(); + } + } } - */ - - if (add) { - hr = whp_dispatch.WHvMapGpaRange(whpx->partition, - host_va, - start_pa, - size, - (WHvMapGpaRangeFlagRead | - WHvMapGpaRangeFlagExecute | - (rom ? 0 : WHvMapGpaRangeFlagWrite))); - } else { - hr = whp_dispatch.WHvUnmapGpaRange(whpx->partition, - start_pa, - size); + + if (!slot->size) { + return 0; } - if (FAILED(hr)) { - error_report("WHPX: Failed to %s GPA range '%s' PA:%p, Size:%p bytes," - " Host:%p, hr=%08lx", - (add ? "MAP" : "UNMAP"), name, - (void *)(uintptr_t)start_pa, (void *)size, host_va, hr); + macslot->present = 1; + macslot->gpa_start = slot->start; + macslot->size = slot->size; + hr = whp_dispatch.WHvMapGpaRange(whpx->partition, slot->mem, slot->start, slot->size, flags); + return 0; +} + +static whpx_slot *whpx_find_overlap_slot(uint64_t start, uint64_t size) +{ + whpx_slot *slot; + int x; + for (x = 0; x < whpx_state->num_slots; ++x) { + slot = &whpx_state->slots[x]; + if (slot->size && start < (slot->start + slot->size) && + (start + size) > slot->start) { + return slot; + } } + return NULL; } -static void whpx_process_section(MemoryRegionSection *section, int add) +static void whpx_set_phys_mem(MemoryRegionSection *section, bool add) { - MemoryRegion *mr = section->mr; - hwaddr start_pa = section->offset_within_address_space; - ram_addr_t size = int128_get64(section->size); - unsigned int delta; - uint64_t host_va; + whpx_slot *mem; + MemoryRegion *area = section->mr; + bool writable = !area->readonly && !area->rom_device; + WHV_MAP_GPA_RANGE_FLAGS flags; + uint64_t page_size = qemu_real_host_page_size(); + + if (!memory_region_is_ram(area)) { + if (writable) { + return; + } else if (!memory_region_is_romd(area)) { + /* + * If the memory device is not in romd_mode, then we actually want + * to remove the hvf memory slot so all accesses will trap. + */ + add = false; + } + } - if (!memory_region_is_ram(mr)) { - return; + if (!QEMU_IS_ALIGNED(int128_get64(section->size), page_size) || + !QEMU_IS_ALIGNED(section->offset_within_address_space, page_size)) { + /* Not page aligned, so we can not map as RAM */ + add = false; } - delta = qemu_real_host_page_size() - (start_pa & ~qemu_real_host_page_mask()); - delta &= ~qemu_real_host_page_mask(); - if (delta > size) { - return; + mem = whpx_find_overlap_slot( + section->offset_within_address_space, + int128_get64(section->size)); + + if (mem && add) { + if (mem->size == int128_get64(section->size) && + mem->start == section->offset_within_address_space && + mem->mem == (memory_region_get_ram_ptr(area) + + section->offset_within_region)) { + return; /* Same region was attempted to register, go away. */ + } + } + + /* Region needs to be reset. set the size to 0 and remap it. */ + if (mem) { + mem->size = 0; + if (do_hvf_set_memory(mem, 0)) { + error_report("Failed to reset overlapping slot"); + abort(); + } } - start_pa += delta; - size -= delta; - size &= qemu_real_host_page_mask(); - if (!size || (start_pa & ~qemu_real_host_page_mask())) { + + if (!add) { return; } - host_va = (uintptr_t)memory_region_get_ram_ptr(mr) - + section->offset_within_region + delta; + if (area->readonly || + (!memory_region_is_ram(area) && memory_region_is_romd(area))) { + flags = WHvMapGpaRangeFlagRead | WHvMapGpaRangeFlagExecute; + } else { + flags = WHvMapGpaRangeFlagRead | WHvMapGpaRangeFlagWrite | WHvMapGpaRangeFlagExecute; + } + + /* Now make a new slot. */ + int x; + + for (x = 0; x < whpx_state->num_slots; ++x) { + mem = &whpx_state->slots[x]; + if (!mem->size) { + break; + } + } + + if (x == whpx_state->num_slots) { + error_report("No free slots"); + abort(); + } - whpx_update_mapping(start_pa, size, (void *)(uintptr_t)host_va, add, - memory_region_is_rom(mr), mr->name); + mem->size = int128_get64(section->size); + mem->mem = memory_region_get_ram_ptr(area) + section->offset_within_region; + mem->start = section->offset_within_address_space; + mem->region = area; + + if (do_hvf_set_memory(mem, flags)) { + error_report("Error registering new memory slot"); + abort(); + } } 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); } 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); } static void whpx_transaction_begin(MemoryListener *listener) @@ -531,6 +613,14 @@ static void whpx_accel_instance_init(Object *obj) memset(whpx, 0, sizeof(struct whpx_state)); /* Turn on kernel-irqchip, by default */ whpx->kernel_irqchip_allowed = true; + + int x; + whpx_state = malloc(sizeof(WHPXState)); + whpx_state->num_slots = ARRAY_SIZE(whpx_state->slots); + for (x = 0; x < whpx_state->num_slots; ++x) { + whpx_state->slots[x].size = 0; + whpx_state->slots[x].slot_id = x; + } } static const TypeInfo whpx_accel_type = { -- 2.39.5 (Apple Git-154)