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([38.39.164.180]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-30119265938sm4020084a91.39.2025.03.13.09.39.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 13 Mar 2025 09:39:24 -0700 (PDT) From: Pierrick Bouvier To: qemu-devel@nongnu.org Cc: Paul Durrant , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Harsh Prateek Bora , Liu Zhiwei , "Edgar E. Iglesias" , xen-devel@lists.xenproject.org, Peter Xu , alex.bennee@linaro.org, manos.pitsidianakis@linaro.org, Stefano Stabellini , Paolo Bonzini , qemu-ppc@nongnu.org, Richard Henderson , kvm@vger.kernel.org, David Hildenbrand , Palmer Dabbelt , Weiwei Li , qemu-riscv@nongnu.org, Alistair Francis , Anthony PERARD , Yoshinori Sato , Daniel Henrique Barboza , Nicholas Piggin , Pierrick Bouvier Subject: [PATCH v4 12/17] hw/xen: add stubs for various functions Date: Thu, 13 Mar 2025 09:38:58 -0700 Message-Id: <20250313163903.1738581-13-pierrick.bouvier@linaro.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250313163903.1738581-1-pierrick.bouvier@linaro.org> References: <20250313163903.1738581-1-pierrick.bouvier@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::62b; envelope-from=pierrick.bouvier@linaro.org; helo=mail-pl1-x62b.google.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_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable 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+patch=linaro.org@nongnu.org Sender: qemu-devel-bounces+patch=linaro.org@nongnu.org Those functions are used by system/physmem.c, and are called only if xen is enabled (which happens only if CONFIG_XEN is not set). So we can crash in case those are called. Acked-by: Richard Henderson Signed-off-by: Pierrick Bouvier --- hw/xen/xen_stubs.c | 56 ++++++++++++++++++++++++++++++++++++++++++++++ hw/xen/meson.build | 3 +++ 2 files changed, 59 insertions(+) create mode 100644 hw/xen/xen_stubs.c diff --git a/hw/xen/xen_stubs.c b/hw/xen/xen_stubs.c new file mode 100644 index 00000000000..19cee84bbb4 --- /dev/null +++ b/hw/xen/xen_stubs.c @@ -0,0 +1,56 @@ +/* + * Various stubs for xen functions + * + * Those functions are used only if xen_enabled(). This file is linked only if + * CONFIG_XEN is not set, so they should never be called. + * + * Copyright (c) 2025 Linaro, Ltd. + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#include "qemu/osdep.h" +#include "system/xen.h" +#include "system/xen-mapcache.h" + +void xen_hvm_modified_memory(ram_addr_t start, ram_addr_t length) +{ + g_assert_not_reached(); +} + +void xen_ram_alloc(ram_addr_t ram_addr, ram_addr_t size, + struct MemoryRegion *mr, Error **errp) +{ + g_assert_not_reached(); +} + +bool xen_mr_is_memory(MemoryRegion *mr) +{ + g_assert_not_reached(); +} + +void xen_invalidate_map_cache_entry(uint8_t *buffer) +{ + g_assert_not_reached(); +} + +void xen_invalidate_map_cache(void) +{ + g_assert_not_reached(); +} + +ram_addr_t xen_ram_addr_from_mapcache(void *ptr) +{ + g_assert_not_reached(); +} + +uint8_t *xen_map_cache(MemoryRegion *mr, + hwaddr phys_addr, + hwaddr size, + ram_addr_t ram_addr_offset, + uint8_t lock, + bool dma, + bool is_write) +{ + g_assert_not_reached(); +} diff --git a/hw/xen/meson.build b/hw/xen/meson.build index 4a486e36738..a1850e76988 100644 --- a/hw/xen/meson.build +++ b/hw/xen/meson.build @@ -9,6 +9,9 @@ system_ss.add(when: ['CONFIG_XEN_BUS'], if_true: files( system_ss.add(when: ['CONFIG_XEN', xen], if_true: files( 'xen-operations.c', +), +if_false: files( + 'xen_stubs.c', )) xen_specific_ss = ss.source_set()