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| author | Zhenzhong Duan | 2019-07-16 06:26:09 +0200 |
|---|---|---|
| committer | Juergen Gross | 2019-07-17 08:09:59 +0200 |
| commit | bef6e0ae7420bfddfb150dda529bbe835f87b9f2 (patch) | |
| tree | 0a40c3408e37c9ddb6579f23d3d7f84f57807be4 /arch/x86/include | |
| parent | x86/paravirt: Remove const mark from x86_hyper_xen_hvm variable (diff) | |
| download | kernel-qcow2-linux-bef6e0ae7420bfddfb150dda529bbe835f87b9f2.tar.gz kernel-qcow2-linux-bef6e0ae7420bfddfb150dda529bbe835f87b9f2.tar.xz kernel-qcow2-linux-bef6e0ae7420bfddfb150dda529bbe835f87b9f2.zip | |
x86/xen: Add "nopv" support for HVM guest
PVH guest needs PV extentions to work, so "nopv" parameter should be
ignored for PVH but not for HVM guest.
If PVH guest boots up via the Xen-PVH boot entry, xen_pvh is set early,
we know it's PVH guest and ignore "nopv" parameter directly.
If PVH guest boots up via the normal boot entry same as HVM guest, it's
hard to distinguish PVH and HVM guest at that time. In this case, we
have to panic early if PVH is detected and nopv is enabled to avoid a
worse situation later.
Remove static from bool_x86_init_noop/x86_op_int_noop so they could be
used globally. Move xen_platform_hvm() after xen_hvm_guest_late_init()
to avoid compile error.
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@oracle.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: Stefano Stabellini <sstabellini@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Signed-off-by: Juergen Gross <jgross@suse.com>
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/x86_init.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/include/asm/x86_init.h b/arch/x86/include/asm/x86_init.h index b85a7c54c6a1..ac0934189017 100644 --- a/arch/x86/include/asm/x86_init.h +++ b/arch/x86/include/asm/x86_init.h @@ -301,6 +301,8 @@ extern struct x86_apic_ops x86_apic_ops; extern void x86_early_init_platform_quirks(void); extern void x86_init_noop(void); extern void x86_init_uint_noop(unsigned int unused); +extern bool bool_x86_init_noop(void); +extern void x86_op_int_noop(int cpu); extern bool x86_pnpbios_disabled(void); #endif |