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Iglesias" , qemu-riscv@nongnu.org, Liu Zhiwei , Paolo Bonzini , Harsh Prateek Bora , alex.bennee@linaro.org, manos.pitsidianakis@linaro.org, Daniel Henrique Barboza , Richard Henderson , Alistair Francis , qemu-ppc@nongnu.org, =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Weiwei Li , kvm@vger.kernel.org, Palmer Dabbelt , Peter Xu , Yoshinori Sato , Anthony PERARD , Stefano Stabellini , Nicholas Piggin , Pierrick Bouvier , Anthony PERARD Subject: [PATCH v6 12/18] hw/xen: add stubs for various functions Date: Mon, 17 Mar 2025 11:34:11 -0700 Message-Id: <20250317183417.285700-13-pierrick.bouvier@linaro.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250317183417.285700-1-pierrick.bouvier@linaro.org> References: <20250317183417.285700-1-pierrick.bouvier@linaro.org> MIME-Version: 1.0 Those symbols are used by system/physmem.c, and are called only if xen_enabled() (which happens only if CONFIG_XEN is set and xen is available). So we can crash the stubs in case those are called, as they are linked only when CONFIG_XEN is not set. Acked-by: Richard Henderson Reviewed-by: Anthony PERARD Signed-off-by: Pierrick Bouvier --- hw/xen/xen_stubs.c | 51 ++++++++++++++++++++++++++++++++++++++++++++++ hw/xen/meson.build | 3 +++ 2 files changed, 54 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..5e565df3929 --- /dev/null +++ b/hw/xen/xen_stubs.c @@ -0,0 +1,51 @@ +/* + * 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(); +} + +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()