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2019-11-16x86/iopl: Remove legacy IOPL optionThomas Gleixner1-2/+0
The IOPL emulation via the I/O bitmap is sufficient. Remove the legacy cruft dealing with the (e)flags based IOPL mechanism. Signed-off-by: Thomas Gleixner <[email protected]> Reviewed-by: Juergen Gross <[email protected]> (Paravirt and Xen parts) Acked-by: Andy Lutomirski <[email protected]>
2019-07-17x86/xen: Mark xen_hvm_need_lapic() and xen_x2apic_para_available() as __initZhenzhong Duan1-3/+3
.. as they are only called at early bootup stage. In fact, other functions in x86_hyper_xen_hvm.init.* are all marked as __init. Unexport xen_hvm_need_lapic as it's never used outside. Signed-off-by: Zhenzhong Duan <[email protected]> Reviewed-by: Juergen Gross <[email protected]> Cc: Boris Ostrovsky <[email protected]> Cc: Stefano Stabellini <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Borislav Petkov <[email protected]> Signed-off-by: Juergen Gross <[email protected]>
2016-03-17x86/iopl/64: Properly context-switch IOPL on Xen PVAndy Lutomirski1-0/+2
On Xen PV, regs->flags doesn't reliably reflect IOPL and the exit-to-userspace code doesn't change IOPL. We need to context switch it manually. I'm doing this without going through paravirt because this is specific to Xen PV. After the dust settles, we can merge this with the 32-bit code, tidy up the iopl syscall implementation, and remove the set_iopl pvop entirely. Fixes XSA-171. Reviewewd-by: Jan Beulich <[email protected]> Signed-off-by: Andy Lutomirski <[email protected]> Cc: Andrew Cooper <[email protected]> Cc: Andy Lutomirski <[email protected]> Cc: Boris Ostrovsky <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: Brian Gerst <[email protected]> Cc: David Vrabel <[email protected]> Cc: Denys Vlasenko <[email protected]> Cc: H. Peter Anvin <[email protected]> Cc: Jan Beulich <[email protected]> Cc: Linus Torvalds <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: [email protected] Link: http://lkml.kernel.org/r/693c3bd7aeb4d3c27c92c622b7d0f554a458173c.1458162709.git.luto@kernel.org Signed-off-by: Ingo Molnar <[email protected]>
2015-10-23xen/arm: Enable cpu_hotplug.cStefano Stabellini1-0/+5
Build cpu_hotplug for ARM and ARM64 guests. Rename arch_(un)register_cpu to xen_(un)register_cpu and provide an empty implementation on ARM and ARM64. On x86 just call arch_(un)register_cpu as we are already doing. Initialize cpu_hotplug on ARM. Signed-off-by: Stefano Stabellini <[email protected]> Reviewed-by: Julien Grall <[email protected]> Reviewed-by: Boris Ostrovsky <[email protected]>
2013-08-05xen: Switch to use hypervisor_cpuid_base()Jason Wang1-15/+1
Switch to use hypervisor_cpuid_base() to detect Xen. Cc: Konrad Rzeszutek Wilk <[email protected]> Cc: Jeremy Fitzhardinge <[email protected]> Cc: Paolo Bonzini <[email protected]> Signed-off-by: Jason Wang <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: H. Peter Anvin <[email protected]>
2012-10-30x86: remove obsolete comment from asm/xen/hypervisor.hOlaf Hering1-1/+0
Signed-off-by: Olaf Hering <[email protected]> Signed-off-by: Konrad Rzeszutek Wilk <[email protected]>
2011-01-07xen: HVM X2APIC supportSheng Yang1-0/+35
This patch is similiar to Gleb Natapov's patch for KVM, which enable the hypervisor to emulate x2apic feature for the guest. By this way, the emulation of lapic would be simpler with x2apic interface(MSR), and faster. [v2: Re-organized 'xen_hvm_need_lapic' per Ian Campbell suggestion] Acked-by: Jeremy Fitzhardinge <[email protected]> Signed-off-by: Sheng Yang <[email protected]> Signed-off-by: Konrad Rzeszutek Wilk <[email protected]>
2009-11-04xen: move Xen-testing predicates to common headerJeremy Fitzhardinge1-27/+0
Move xen_domain and related tests out of asm-x86 to xen/xen.h so they can be included whenever they are necessary. Signed-off-by: Jeremy Fitzhardinge <[email protected]> Signed-off-by: Jesse Barnes <[email protected]>
2009-02-16x86, xen: short-circuit tests for dom0Jeremy Fitzhardinge1-10/+18
When testing for a dom0/initial/privileged domain, make sure the predicate evaluates to a compile-time 0 if CONFIG_XEN_DOM0 isn't enabled. This will make most of the dom0 code evaporate without much more effort. Signed-off-by: Jeremy Fitzhardinge <[email protected]> Signed-off-by: Ingo Molnar <[email protected]>
2008-12-16xen: clean up asm/xen/hypervisor.hJeremy Fitzhardinge1-31/+8
Impact: cleanup hypervisor.h had accumulated a lot of crud, including lots of spurious #includes. Clean it all up, and go around fixing up everything else accordingly. Signed-off-by: Jeremy Fitzhardinge <[email protected]> Signed-off-by: Ingo Molnar <[email protected]>
2008-10-23x86: drop double underscores from header guardsH. Peter Anvin1-3/+3
Drop double underscores from header guards in arch/x86/include. They are used inconsistently, and are not necessary. Signed-off-by: H. Peter Anvin <[email protected]>
2008-10-22x86: Fix ASM_X86__ header guardsH. Peter Anvin1-3/+3
Change header guards named "ASM_X86__*" to "_ASM_X86_*" since: a. the double underscore is ugly and pointless. b. no leading underscore violates namespace constraints. Signed-off-by: H. Peter Anvin <[email protected]>
2008-10-22x86, um: ... and asm-x86 moveAl Viro1-0/+82
Signed-off-by: Al Viro <[email protected]> Signed-off-by: H. Peter Anvin <[email protected]>
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