Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
Merge tag 'for-linus-4.17-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen fix from Juergen Gross:
"One fix for the kernel running as a fully virtualized guest using PV
drivers on old Xen hypervisor versions"
* tag 'for-linus-4.17-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
x86/xen: Reset VCPU0 info pointer after shared_info remap
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+13
arch/x86/xen/enlighten_hvm.c
+13
arch/x86/xen/enlighten_hvm.c
···
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{
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early_memunmap(HYPERVISOR_shared_info, PAGE_SIZE);
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HYPERVISOR_shared_info = __va(PFN_PHYS(shared_info_pfn));
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/*
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* The virtual address of the shared_info page has changed, so
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* the vcpu_info pointer for VCPU 0 is now stale.
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*
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* The prepare_boot_cpu callback will re-initialize it via
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* xen_vcpu_setup, but we can't rely on that to be called for
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* old Xen versions (xen_have_vector_callback == 0).
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*
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* It is, in any case, bad to have a stale vcpu_info pointer
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* so reset it now.
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*/
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xen_vcpu_info_reset(0);
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}
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static void __init init_hvm_pv_info(void)