From: Baoquan He <bhe@xxxxxxxxxx> Sent: Monday, January 29, 2024 7:00 PM > > Michael pointed out that the CONFIG_CRASH_DUMP ifdef is nested inside > CONFIG_KEXEC_CODE ifdef scope in some XEN, Hyper-V codes. > > Although the nesting works well too since CONFIG_CRASH_DUMP has > dependency on CONFIG_KEXEC_CORE, it may cause confusion because there > are places where it's not nested, and people may think it needs to be > nested even though it doesn't have to. > > Fix that by moving CONFIG_CRASH_DUMP ifdeffery of codes out of > CONFIG_KEXEC_CODE ifdeffery scope. > > And also put function machine_crash_shutdown() definition inside > CONFIG_CRASH_DUMP ifdef scope instead of CONFIG_KEXEC_CORE ifdef. > > And also fix a building error Nathan reported as below by replacing > CONFIG_KEXEC_CORE ifdef with CONFIG_VMCORE_INFO ifdef. > > ==== > $ curl -LSso .config https://git.alpinelinux.org/aports/plain/community/linux-edge/config-edge.x86_64 > $ make -skj"$(nproc)" ARCH=x86_64 CROSS_COMPILE=x86_64-linux- > olddefconfig all > ... > x86_64-linux-ld: arch/x86/xen/mmu_pv.o: in function > `paddr_vmcoreinfo_note': > mmu_pv.c:(.text+0x3af3): undefined reference to `vmcoreinfo_note' > ==== > > Link: https://lore.kernel.org/all/SN6PR02MB4157931105FA68D72E3D3DB8D47B2@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/T/#u > Link: https://lore.kernel.org/all/20240126045551.GA126645@dev-arch.thelio-3990X/T/#u > Signed-off-by: Baoquan He <bhe@xxxxxxxxxx> > --- > v1->v2: > - Add missing words and fix typos in patch log pointed out by Michael. > > arch/x86/kernel/cpu/mshyperv.c | 10 ++++++---- > arch/x86/kernel/reboot.c | 2 +- > arch/x86/xen/enlighten_hvm.c | 4 ++-- > arch/x86/xen/mmu_pv.c | 2 +- > 4 files changed, 10 insertions(+), 8 deletions(-) > > diff --git a/arch/x86/kernel/cpu/mshyperv.c > b/arch/x86/kernel/cpu/mshyperv.c > index f8163a59026b..2e8cd5a4ae85 100644 > --- a/arch/x86/kernel/cpu/mshyperv.c > +++ b/arch/x86/kernel/cpu/mshyperv.c > @@ -209,6 +209,7 @@ static void hv_machine_shutdown(void) > if (kexec_in_progress) > hyperv_cleanup(); > } > +#endif /* CONFIG_KEXEC_CORE */ > > #ifdef CONFIG_CRASH_DUMP > static void hv_machine_crash_shutdown(struct pt_regs *regs) > @@ -222,8 +223,7 @@ static void hv_machine_crash_shutdown(struct > pt_regs *regs) > /* Disable the hypercall page when there is only 1 active CPU. */ > hyperv_cleanup(); > } > -#endif > -#endif /* CONFIG_KEXEC_CORE */ > +#endif /* CONFIG_CRASH_DUMP */ > #endif /* CONFIG_HYPERV */ > > static uint32_t __init ms_hyperv_platform(void) > @@ -497,9 +497,11 @@ static void __init ms_hyperv_init_platform(void) > no_timer_check = 1; > #endif > > -#if IS_ENABLED(CONFIG_HYPERV) && defined(CONFIG_KEXEC_CORE) > +#if IS_ENABLED(CONFIG_HYPERV) > +#if defined(CONFIG_KEXEC_CORE) > machine_ops.shutdown = hv_machine_shutdown; > -#ifdef CONFIG_CRASH_DUMP > +#endif > +#if defined(CONFIG_CRASH_DUMP) > machine_ops.crash_shutdown = hv_machine_crash_shutdown; > #endif > #endif > diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c > index 1287b0d5962f..f3130f762784 100644 > --- a/arch/x86/kernel/reboot.c > +++ b/arch/x86/kernel/reboot.c > @@ -826,7 +826,7 @@ void machine_halt(void) > machine_ops.halt(); > } > > -#ifdef CONFIG_KEXEC_CORE > +#ifdef CONFIG_CRASH_DUMP > void machine_crash_shutdown(struct pt_regs *regs) > { > machine_ops.crash_shutdown(regs); > diff --git a/arch/x86/xen/enlighten_hvm.c b/arch/x86/xen/enlighten_hvm.c > index 09e3db7ff990..0b367c1e086d 100644 > --- a/arch/x86/xen/enlighten_hvm.c > +++ b/arch/x86/xen/enlighten_hvm.c > @@ -148,6 +148,7 @@ static void xen_hvm_shutdown(void) > if (kexec_in_progress) > xen_reboot(SHUTDOWN_soft_reset); > } > +#endif > > #ifdef CONFIG_CRASH_DUMP > static void xen_hvm_crash_shutdown(struct pt_regs *regs) > @@ -156,7 +157,6 @@ static void xen_hvm_crash_shutdown(struct pt_regs > *regs) > xen_reboot(SHUTDOWN_soft_reset); > } > #endif > -#endif > > static int xen_cpu_up_prepare_hvm(unsigned int cpu) > { > @@ -238,10 +238,10 @@ static void __init xen_hvm_guest_init(void) > > #ifdef CONFIG_KEXEC_CORE > machine_ops.shutdown = xen_hvm_shutdown; > +#endif > #ifdef CONFIG_CRASH_DUMP > machine_ops.crash_shutdown = xen_hvm_crash_shutdown; > #endif > -#endif > } > > static __init int xen_parse_nopv(char *arg) > diff --git a/arch/x86/xen/mmu_pv.c b/arch/x86/xen/mmu_pv.c > index 218773cfb009..e21974f2cf2d 100644 > --- a/arch/x86/xen/mmu_pv.c > +++ b/arch/x86/xen/mmu_pv.c > @@ -2520,7 +2520,7 @@ int xen_remap_pfn(struct vm_area_struct *vma, > unsigned long addr, > } > EXPORT_SYMBOL_GPL(xen_remap_pfn); > > -#ifdef CONFIG_KEXEC_CORE > +#ifdef CONFIG_VMCORE_INFO > phys_addr_t paddr_vmcoreinfo_note(void) > { > if (xen_pv_domain()) > -- > 2.41.0 Reviewed-by: Michael Kelley <mhklinux@xxxxxxxxxxx> _______________________________________________ kexec mailing list kexec@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/kexec
