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4c00673489
The current usage of memblock_reserve() in init_pvh_bootparams() is done before the .bss is zeroed, and that used to be fine when memblock_reserved_init_regions implicitly ended up in the .meminit.data section. However after commit73db3abdcamemblock_reserved_init_regions ends up in the .bss section, thus breaking it's usage before the .bss is cleared. Move and rename the call to xen_reserve_extra_memory() so it's done in the x86_init.oem.arch_setup hook, which gets executed after the .bss has been zeroed, but before calling e820__memory_setup(). Fixes:73db3abdca("init/modpost: conditionally check section mismatch to __meminit*") Signed-off-by: Roger Pau Monné <roger.pau@citrix.com> Reviewed-by: Juergen Gross <jgross@suse.com> Message-ID: <20240725073116.14626-3-roger.pau@citrix.com> Signed-off-by: Juergen Gross <jgross@suse.com>
113 lines
3.3 KiB
C
113 lines
3.3 KiB
C
/******************************************************************************
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* hypervisor.h
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*
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* Linux-specific hypervisor handling.
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*
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* Copyright (c) 2002-2004, K A Fraser
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation; or, when distributed
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* separately from the Linux kernel or incorporated into other
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* software packages, subject to the following license:
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this source file (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy, modify,
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* merge, publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#ifndef _ASM_X86_XEN_HYPERVISOR_H
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#define _ASM_X86_XEN_HYPERVISOR_H
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extern struct shared_info *HYPERVISOR_shared_info;
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extern struct start_info *xen_start_info;
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#include <asm/bug.h>
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#include <asm/processor.h>
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#define XEN_SIGNATURE "XenVMMXenVMM"
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static inline uint32_t xen_cpuid_base(void)
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{
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return hypervisor_cpuid_base(XEN_SIGNATURE, 2);
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}
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struct pci_dev;
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#ifdef CONFIG_XEN_PV_DOM0
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bool xen_initdom_restore_msi(struct pci_dev *dev);
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#else
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static inline bool xen_initdom_restore_msi(struct pci_dev *dev) { return true; }
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#endif
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#ifdef CONFIG_HOTPLUG_CPU
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void xen_arch_register_cpu(int num);
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void xen_arch_unregister_cpu(int num);
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#endif
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#ifdef CONFIG_PVH
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void __init xen_pvh_init(struct boot_params *boot_params);
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void __init mem_map_via_hcall(struct boot_params *boot_params_p);
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#endif
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/* Lazy mode for batching updates / context switch */
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enum xen_lazy_mode {
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XEN_LAZY_NONE,
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XEN_LAZY_MMU,
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XEN_LAZY_CPU,
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};
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DECLARE_PER_CPU(enum xen_lazy_mode, xen_lazy_mode);
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DECLARE_PER_CPU(unsigned int, xen_lazy_nesting);
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static inline void enter_lazy(enum xen_lazy_mode mode)
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{
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enum xen_lazy_mode old_mode = this_cpu_read(xen_lazy_mode);
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if (mode == old_mode) {
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this_cpu_inc(xen_lazy_nesting);
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return;
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}
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BUG_ON(old_mode != XEN_LAZY_NONE);
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this_cpu_write(xen_lazy_mode, mode);
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}
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static inline void leave_lazy(enum xen_lazy_mode mode)
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{
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BUG_ON(this_cpu_read(xen_lazy_mode) != mode);
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if (this_cpu_read(xen_lazy_nesting) == 0)
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this_cpu_write(xen_lazy_mode, XEN_LAZY_NONE);
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else
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this_cpu_dec(xen_lazy_nesting);
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}
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enum xen_lazy_mode xen_get_lazy_mode(void);
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#if defined(CONFIG_XEN_DOM0) && defined(CONFIG_ACPI)
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void xen_sanitize_proc_cap_bits(uint32_t *buf);
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#else
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static inline void xen_sanitize_proc_cap_bits(uint32_t *buf)
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{
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BUG();
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}
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#endif
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#endif /* _ASM_X86_XEN_HYPERVISOR_H */
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