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| author |   Juergen Gross <jgross@suse.com> | 2017-04-11 18:14:26 +0200 |
|---|---|---|
| committer | Juergen Gross <jgross@suse.com> | 2017-05-02 11:13:17 +0200 |
| commit | 29985b09613ba106a1ed0496988636d288600515 (patch) | |
| tree | d4c18eeb6a811b70c82f4b6787ede55acc83a906 /arch/x86 | |
| parent | xen/displif: add ABI for para-virtual display (diff) | |
| download | linux-dev-29985b09613ba106a1ed0496988636d288600515.tar.xz linux-dev-29985b09613ba106a1ed0496988636d288600515.zip | |
xen,kdump: handle pv domain in paddr_vmcoreinfo_note()
For kdump to work correctly it needs the physical address of
vmcoreinfo_note. When running as dom0 this means the virtual address
has to be translated to the related machine address.
paddr_vmcoreinfo_note() is meant to do the translation via
__pa_symbol() only, but being attributed "weak" it can be replaced
easily in Xen case.
Signed-off-by: Juergen Gross <jgross@suse.com>
Tested-by: Petr Tesarik <ptesarik@suse.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/xen/mmu_pv.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/x86/xen/mmu_pv.c b/arch/x86/xen/mmu_pv.c index c98bfb9f0248..9d9ae6650aa1 100644 --- a/arch/x86/xen/mmu_pv.c +++ b/arch/x86/xen/mmu_pv.c @@ -49,6 +49,9 @@ #include <linux/memblock.h> #include <linux/seq_file.h> #include <linux/crash_dump.h> +#ifdef CONFIG_KEXEC_CORE +#include <linux/kexec.h> +#endif #include <trace/events/xen.h> @@ -2715,3 +2718,13 @@ void xen_destroy_contiguous_region(phys_addr_t pstart, unsigned int order) spin_unlock_irqrestore(&xen_reservation_lock, flags); } EXPORT_SYMBOL_GPL(xen_destroy_contiguous_region); + +#ifdef CONFIG_KEXEC_CORE +phys_addr_t paddr_vmcoreinfo_note(void) +{ + if (xen_pv_domain()) + return virt_to_machine(&vmcoreinfo_note).maddr; + else + return __pa_symbol(&vmcoreinfo_note); +} +#endif /* CONFIG_KEXEC_CORE */ |