search for: config_xen_pv

There is no need to include pv-guest only object files in a kernel not configured to support those. Move Xen's irq.o, xen-asm*.o and pv parts of entry_*.o into CONFIG_XEN_PV sections. Signed-off-by: Juergen Gross <jgross at suse.com> --- arch/x86/entry/entry_32.S | 4 +++- arch/x86/entry/entry_64.S | 6 ++++-- arch/x86/xen/Makefile | 8 ++++---- 3 files changed, 11 insertions(+), 7 deletions(-) diff --git a/arch/x86/entry/entry_32.S b/arch/x86/entry/entry_...

...st support while keeping PVH and PVHVM support, I thought about putting most pv_mmu_ops functions in #ifdef CONFIG_XEN_HAS_PVMMU sections. If there wouldn't be lguest... So my question: is anybody still using lguest or would like to keep it? If yes, I'd add CONFIG_PARAVIRT_MMU selected by CONFIG_XEN_PV and CONFIG_LGUEST_GUEST. If no, I'd remove lguest support and just use CONFIG_XEN_HAS_PVMMU, in case nobody would like me to use CONFIG_PARAVIRT_MMU even if lguest isn't there any more. Juergen

...st support while keeping PVH and PVHVM support, I thought about putting most pv_mmu_ops functions in #ifdef CONFIG_XEN_HAS_PVMMU sections. If there wouldn't be lguest... So my question: is anybody still using lguest or would like to keep it? If yes, I'd add CONFIG_PARAVIRT_MMU selected by CONFIG_XEN_PV and CONFIG_LGUEST_GUEST. If no, I'd remove lguest support and just use CONFIG_XEN_HAS_PVMMU, in case nobody would like me to use CONFIG_PARAVIRT_MMU even if lguest isn't there any more. Juergen

...void idtentry_exit_nmi(struct pt_regs *regs, bool restore) __nmi_exit(); } +noinstr void idtentry_validate_ist(struct pt_regs *regs) +{ + if ((regs->sp & ~(EXCEPTION_STKSZ-1)) == + (_RET_IP_ & ~(EXCEPTION_STKSZ-1))) + die("IST stack recursion", regs, 0); +} + #ifdef CONFIG_XEN_PV #ifndef CONFIG_PREEMPTION /* diff --git a/arch/x86/include/asm/idtentry.h b/arch/x86/include/asm/idtentry.h index 4e399f120ff8..974c1a4eacbb 100644 --- a/arch/x86/include/asm/idtentry.h +++ b/arch/x86/include/asm/idtentry.h @@ -19,6 +19,8 @@ void idtentry_exit_cond_rcu(struct pt_regs *regs, bool...

On Tue, Jun 23, 2020 at 02:52:01PM +0200, Peter Zijlstra wrote: > On Tue, Jun 23, 2020 at 02:04:33PM +0200, Joerg Roedel wrote: > > No, the recursion check is fine, because overwriting an already used IST > > stack doesn't matter (as long as it can be detected) if we are going to > > panic anyway. It doesn't matter because the kernel will not leave the > >

...86_hyper_ms_hyperv; > +extern const struct hypervisor_x86 x86_hyper_xen_pv; > +extern const struct hypervisor_x86 x86_hyper_xen_hvm; > +extern const struct hypervisor_x86 x86_hyper_kvm; > + > static const __initconst struct hypervisor_x86 * const hypervisors[] = > { > #ifdef CONFIG_XEN_PV > @@ -41,8 +47,8 @@ static const __initconst struct hypervisor_x86 * const hypervisors[] = > #endif > }; > > -const struct hypervisor_x86 *x86_hyper; > -EXPORT_SYMBOL(x86_hyper); > +enum x86_hypervisor_type x86_hyper_type; > +EXPORT_SYMBOL(x86_hyper_type); > > s...

...86_hyper_ms_hyperv; > +extern const struct hypervisor_x86 x86_hyper_xen_pv; > +extern const struct hypervisor_x86 x86_hyper_xen_hvm; > +extern const struct hypervisor_x86 x86_hyper_kvm; > + > static const __initconst struct hypervisor_x86 * const hypervisors[] = > { > #ifdef CONFIG_XEN_PV > @@ -41,8 +47,8 @@ static const __initconst struct hypervisor_x86 * const hypervisors[] = > #endif > }; > > -const struct hypervisor_x86 *x86_hyper; > -EXPORT_SYMBOL(x86_hyper); > +enum x86_hypervisor_type x86_hyper_type; > +EXPORT_SYMBOL(x86_hyper_type); > > s...

...xtern const struct hypervisor_x86 x86_hyper_ms_hyperv; +extern const struct hypervisor_x86 x86_hyper_xen_pv; +extern const struct hypervisor_x86 x86_hyper_xen_hvm; +extern const struct hypervisor_x86 x86_hyper_kvm; + static const __initconst struct hypervisor_x86 * const hypervisors[] = { #ifdef CONFIG_XEN_PV @@ -41,8 +47,8 @@ static const __initconst struct hypervis #endif }; -const struct hypervisor_x86 *x86_hyper; -EXPORT_SYMBOL(x86_hyper); +enum x86_hypervisor_type x86_hyper_type; +EXPORT_SYMBOL(x86_hyper_type); static inline const struct hypervisor_x86 * __init detect_hypervisor_vendor(void...

...xtern const struct hypervisor_x86 x86_hyper_ms_hyperv; +extern const struct hypervisor_x86 x86_hyper_xen_pv; +extern const struct hypervisor_x86 x86_hyper_xen_hvm; +extern const struct hypervisor_x86 x86_hyper_kvm; + static const __initconst struct hypervisor_x86 * const hypervisors[] = { #ifdef CONFIG_XEN_PV @@ -41,8 +47,8 @@ static const __initconst struct hypervisor_x86 * const hypervisors[] = #endif }; -const struct hypervisor_x86 *x86_hyper; -EXPORT_SYMBOL(x86_hyper); +enum x86_hypervisor_type x86_hyper_type; +EXPORT_SYMBOL(x86_hyper_type); static inline const struct hypervisor_x86 * __init...

...kage void alignment_check(void); #ifdef CONFIG_X86_MCE asmlinkage void machine_check(void); #endif /* CONFIG_X86_MCE */ +#ifdef CONFIG_AMD_MEM_ENCRYPT +asmlinkage void vmm_communication(void); +#endif asmlinkage void simd_coprocessor_error(void); #if defined(CONFIG_X86_64) && defined(CONFIG_XEN_PV) @@ -83,6 +86,10 @@ dotraplinkage void do_spurious_interrupt_bug(struct pt_regs *regs, long error_co dotraplinkage void do_coprocessor_error(struct pt_regs *regs, long error_code); dotraplinkage void do_alignment_check(struct pt_regs *regs, long error_code); dotraplinkage void do_simd_coprocesso...

Booting a Xen PVH guest requires a special boot entry as it is mandatory to setup some Xen-specific interfaces rather early. When grub or OVMF are used as boot loaders, however, those will fill the boot parameters in zeropage and there is no longer a need to do something PVH specific in the early boot path. This patch series adds support for that scenario by identifying PVH environment and doing

Booting a Xen PVH guest requires a special boot entry as it is mandatory to setup some Xen-specific interfaces rather early. When grub or OVMF are used as boot loaders, however, those will fill the boot parameters in zeropage and there is no longer a need to do something PVH specific in the early boot path. This patch series adds support for that scenario by identifying PVH environment and doing

...and 64 bit kernels without PARAVIRT, with PARAVIRT, and with PARAVIRT + PARAVIRT_FULL configured. Juergen Gross (10): x86: remove stale prototype from arch/x86/include/asm/pgalloc.h paravirt: remove unused function paravirt_disable_iospace() xen: move interrupt handling for pv guests under CONFIG_XEN_PV umbrella xen: remove non-pv test from arch/x86/xen/irq.c paravirt: add new PARAVIRT_FULL config item paravirt: split pv_cpu_ops for support of PARAVIRT_FULL paravirt: split pv_irq_ops for support of PARAVIRT_FULL paravirt: split pv_mmu_ops for support of PARAVIRT_FULL paravirt: spli...

...and 64 bit kernels without PARAVIRT, with PARAVIRT, and with PARAVIRT + PARAVIRT_FULL configured. Juergen Gross (10): x86: remove stale prototype from arch/x86/include/asm/pgalloc.h paravirt: remove unused function paravirt_disable_iospace() xen: move interrupt handling for pv guests under CONFIG_XEN_PV umbrella xen: remove non-pv test from arch/x86/xen/irq.c paravirt: add new PARAVIRT_FULL config item paravirt: split pv_cpu_ops for support of PARAVIRT_FULL paravirt: split pv_irq_ops for support of PARAVIRT_FULL paravirt: split pv_mmu_ops for support of PARAVIRT_FULL paravirt: spli...

...35cb102fafd ("x86/paravirt: Fix spectre-v2 mitigations for paravirt guests") is a prerequisite for this series. The last 4 patches of this series require my Xen cleanup series https://lore.kernel.org/lkml/20180717120113.12756-1-jgross at suse.com/ which hides more Xen PV-only code behind CONFIG_XEN_PV. Juergen Gross (10): x86/paravirt: make paravirt_patch_call() and paravirt_patch_jmp() static x86/paravirt: remove clobbers parameter from paravirt patch functions x86/paravirt: remove clobbers from struct paravirt_patch_site x86/paravirt: use a single ops structure x86/paravirt: rem...

...TENDED_PLATFORM is not set CONFIG_X86_INTEL_LPSS=y # CONFIG_X86_AMD_PLATFORM_DEVICE is not set CONFIG_IOSF_MBI=y CONFIG_IOSF_MBI_DEBUG=y CONFIG_X86_SUPPORTS_MEMORY_FAILURE=y # CONFIG_SCHED_OMIT_FRAME_POINTER is not set CONFIG_HYPERVISOR_GUEST=y CONFIG_PARAVIRT=y CONFIG_PARAVIRT_DEBUG=y CONFIG_XEN=y CONFIG_XEN_PV=y CONFIG_XEN_DOM0=y # CONFIG_XEN_PVHVM is not set CONFIG_XEN_512GB=y CONFIG_XEN_SAVE_RESTORE=y # CONFIG_XEN_DEBUG_FS is not set CONFIG_KVM_GUEST=y # CONFIG_KVM_DEBUG_FS is not set CONFIG_PARAVIRT_TIME_ACCOUNTING=y CONFIG_PARAVIRT_CLOCK=y CONFIG_NO_BOOTMEM=y # CONFIG_MK8 is not set # CONFIG_MPSC is...

...is not set # CONFIG_X86_AMD_PLATFORM_DEVICE is not set CONFIG_IOSF_MBI=y # CONFIG_IOSF_MBI_DEBUG is not set CONFIG_X86_SUPPORTS_MEMORY_FAILURE=y CONFIG_SCHED_OMIT_FRAME_POINTER=y CONFIG_HYPERVISOR_GUEST=y CONFIG_PARAVIRT=y CONFIG_PARAVIRT_DEBUG=y # CONFIG_PARAVIRT_SPINLOCKS is not set CONFIG_XEN=y CONFIG_XEN_PV=y CONFIG_XEN_PV_SMP=y CONFIG_XEN_DOM0=y CONFIG_XEN_PVHVM=y CONFIG_XEN_PVHVM_SMP=y CONFIG_XEN_512GB=y CONFIG_XEN_SAVE_RESTORE=y # CONFIG_XEN_DEBUG_FS is not set CONFIG_XEN_PVH=y CONFIG_KVM_GUEST=y # CONFIG_KVM_DEBUG_FS is not set # CONFIG_PARAVIRT_TIME_ACCOUNTING is not set CONFIG_PARAVIRT_CLOCK=y C...

...is not set # CONFIG_X86_AMD_PLATFORM_DEVICE is not set CONFIG_IOSF_MBI=y # CONFIG_IOSF_MBI_DEBUG is not set CONFIG_X86_SUPPORTS_MEMORY_FAILURE=y CONFIG_SCHED_OMIT_FRAME_POINTER=y CONFIG_HYPERVISOR_GUEST=y CONFIG_PARAVIRT=y CONFIG_PARAVIRT_DEBUG=y # CONFIG_PARAVIRT_SPINLOCKS is not set CONFIG_XEN=y CONFIG_XEN_PV=y CONFIG_XEN_PV_SMP=y CONFIG_XEN_DOM0=y CONFIG_XEN_PVHVM=y CONFIG_XEN_PVHVM_SMP=y CONFIG_XEN_512GB=y CONFIG_XEN_SAVE_RESTORE=y # CONFIG_XEN_DEBUG_FS is not set CONFIG_XEN_PVH=y CONFIG_KVM_GUEST=y # CONFIG_KVM_DEBUG_FS is not set # CONFIG_PARAVIRT_TIME_ACCOUNTING is not set CONFIG_PARAVIRT_CLOCK=y C...

...t set > CONFIG_IOSF_MBI=y > # CONFIG_IOSF_MBI_DEBUG is not set > CONFIG_X86_SUPPORTS_MEMORY_FAILURE=y > CONFIG_SCHED_OMIT_FRAME_POINTER=y > CONFIG_HYPERVISOR_GUEST=y > CONFIG_PARAVIRT=y > CONFIG_PARAVIRT_DEBUG=y > # CONFIG_PARAVIRT_SPINLOCKS is not set > CONFIG_XEN=y > CONFIG_XEN_PV=y > CONFIG_XEN_PV_SMP=y > CONFIG_XEN_DOM0=y > CONFIG_XEN_PVHVM=y > CONFIG_XEN_PVHVM_SMP=y > CONFIG_XEN_512GB=y > CONFIG_XEN_SAVE_RESTORE=y > # CONFIG_XEN_DEBUG_FS is not set > CONFIG_XEN_PVH=y > CONFIG_KVM_GUEST=y > # CONFIG_KVM_DEBUG_FS is not set > # CONFIG_PARAVI...

...MD_PLATFORM_DEVICE is not set CONFIG_IOSF_MBI=y # CONFIG_IOSF_MBI_DEBUG is not set CONFIG_X86_SUPPORTS_MEMORY_FAILURE=y CONFIG_SCHED_OMIT_FRAME_POINTER=y CONFIG_HYPERVISOR_GUEST=y CONFIG_PARAVIRT=y CONFIG_PARAVIRT_DEBUG=y CONFIG_PARAVIRT_SPINLOCKS=y # CONFIG_QUEUED_LOCK_STAT is not set CONFIG_XEN=y CONFIG_XEN_PV=y CONFIG_XEN_PV_SMP=y CONFIG_XEN_DOM0=y CONFIG_XEN_PVHVM=y CONFIG_XEN_PVHVM_SMP=y CONFIG_XEN_512GB=y CONFIG_XEN_SAVE_RESTORE=y # CONFIG_XEN_DEBUG_FS is not set CONFIG_XEN_PVH=y CONFIG_KVM_GUEST=y # CONFIG_KVM_DEBUG_FS is not set # CONFIG_PARAVIRT_TIME_ACCOUNTING is not set CONFIG_PARAVIRT_CLOCK=y C...