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2024-01-31x86/traps: Add sysvec_install() to install a system interrupt handlerXin Li1-2/+2
Add sysvec_install() to install a system interrupt handler into the IDT or the FRED system interrupt handler table. Signed-off-by: Xin Li <[email protected]> Signed-off-by: Thomas Gleixner <[email protected]> Signed-off-by: Borislav Petkov (AMD) <[email protected]> Tested-by: Shan Kang <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2023-08-09x86/apic: Nuke ack_APIC_irq()Dave Hansen1-1/+1
Yet another wrapper of a wrapper gone along with the outdated comment that this compiles to a single instruction. Signed-off-by: Thomas Gleixner <[email protected]> Signed-off-by: Dave Hansen <[email protected]> Reviewed-by: Wei Liu <[email protected]> Acked-by: Peter Zijlstra (Intel) <[email protected]> Tested-by: Michael Kelley <[email protected]> Tested-by: Sohil Mehta <[email protected]> Tested-by: Juergen Gross <[email protected]> # Xen PV (dom0 and unpriv. guest)
2022-08-04x86/acrn: Set up timekeepingFei Li1-0/+3
ACRN Hypervisor reports timing information via CPUID leaf 0x40000010. Get the TSC and CPU frequency via CPUID leaf 0x40000010 and set the kernel values accordingly. Signed-off-by: Fei Li <[email protected]> Signed-off-by: Ingo Molnar <[email protected]> Reviewed-by: Conghui <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2021-02-09x86/acrn: Introduce acrn_cpuid_base() and hypervisor feature bitsYin Fengwei1-1/+1
ACRN Hypervisor reports hypervisor features via CPUID leaf 0x40000001 which is similar to KVM. A VM can check if it's the privileged VM using the feature bits. The Service VM is the only privileged VM by design. Cc: Dave Hansen <[email protected]> Cc: Sean Christopherson <[email protected]> Cc: Dan Williams <[email protected]> Cc: Fengwei Yin <[email protected]> Cc: Zhi Wang <[email protected]> Cc: Zhenyu Wang <[email protected]> Cc: Yu Wang <[email protected]> Cc: Reinette Chatre <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Reviewed-by: Reinette Chatre <[email protected]> Acked-by: Borislav Petkov <[email protected]> Signed-off-by: Yin Fengwei <[email protected]> Signed-off-by: Shuo Liu <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-02-09x86/acrn: Introduce acrn_{setup, remove}_intr_handler()Shuo Liu1-0/+14
The ACRN Hypervisor builds an I/O request when a trapped I/O access happens in User VM. Then, ACRN Hypervisor issues an upcall by sending a notification interrupt to the Service VM. HSM in the Service VM needs to hook the notification interrupt to handle I/O requests. Notification interrupts from ACRN Hypervisor are already supported and a, currently uninitialized, callback called. Export two APIs for HSM to setup/remove its callback. Cc: Dave Hansen <[email protected]> Cc: Sean Christopherson <[email protected]> Cc: Dan Williams <[email protected]> Cc: Fengwei Yin <[email protected]> Cc: Zhi Wang <[email protected]> Cc: Zhenyu Wang <[email protected]> Cc: Yu Wang <[email protected]> Cc: Reinette Chatre <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Originally-by: Yakui Zhao <[email protected]> Reviewed-by: Zhi Wang <[email protected]> Reviewed-by: Reinette Chatre <[email protected]> Acked-by: Borislav Petkov <[email protected]> Signed-off-by: Shuo Liu <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2020-08-07x86/acrn: Remove redundant chars from ACRN signatureShuo Liu1-2/+2
hypervisor_cpuid_base() only handles 12 chars of the hypervisor signature string but is provided with 14 chars. Remove the redundancy. Additionally, replace the user space uint32_t with preferred kernel type u32. Signed-off-by: Shuo Liu <[email protected]> Signed-off-by: Ingo Molnar <[email protected]> Reviewed-by: Reinette Chatre <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2020-08-07x86/acrn: Allow ACRN guest to use X2APIC modeShuo Liu1-6/+2
The ACRN Hypervisor did not support x2APIC and thus x2APIC support was disabled by always returning false when VM checked for x2APIC support. ACRN received full support of x2APIC and exports the capability through CPUID feature bits. Let VM decide if it needs to switch to x2APIC mode according to CPUID features. Originally-by: Yakui Zhao <[email protected]> Signed-off-by: Shuo Liu <[email protected]> Signed-off-by: Ingo Molnar <[email protected]> Reviewed-by: Reinette Chatre <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2020-06-11x86/entry: Convert various hypervisor vectors to IDTENTRY_SYSVECThomas Gleixner1-5/+4
Convert various hypervisor vectors to IDTENTRY_SYSVEC: - Implement the C entry point with DEFINE_IDTENTRY_SYSVEC - Emit the ASM stub with DECLARE_IDTENTRY_SYSVEC - Remove the ASM idtentries in 64-bit - Remove the BUILD_INTERRUPT entries in 32-bit - Remove the old prototypes No functional change. Signed-off-by: Thomas Gleixner <[email protected]> Signed-off-by: Ingo Molnar <[email protected]> Acked-by: Andy Lutomirski <[email protected]> Reviewed-by: Wei Liu <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2019-06-11x86/acrn: Use HYPERVISOR_CALLBACK_VECTOR for ACRN guest upcall vectorZhao Yakui1-0/+30
Use the HYPERVISOR_CALLBACK_VECTOR to notify an ACRN guest. Co-developed-by: Jason Chen CJ <[email protected]> Signed-off-by: Jason Chen CJ <[email protected]> Signed-off-by: Zhao Yakui <[email protected]> Signed-off-by: Borislav Petkov <[email protected]> Reviewed-by: Thomas Gleixner <[email protected]> Cc: Andy Lutomirski <[email protected]> Cc: "H. Peter Anvin" <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: x86-ml <[email protected]> Link: https://lkml.kernel.org/r/[email protected]
2019-06-11x86: Add support for Linux guests on an ACRN hypervisorZhao Yakui1-0/+39
ACRN is an open-source hypervisor maintained by The Linux Foundation. It is built for embedded IOT with small footprint and real-time features. Add ACRN guest support so that it allows Linux to be booted under the ACRN hypervisor. This adds only the barebones implementation. [ bp: Massage commit message and help text. ] Co-developed-by: Jason Chen CJ <[email protected]> Signed-off-by: Jason Chen CJ <[email protected]> Signed-off-by: Zhao Yakui <[email protected]> Signed-off-by: Borislav Petkov <[email protected]> Reviewed-by: Thomas Gleixner <[email protected]> Cc: "H. Peter Anvin" <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: x86-ml <[email protected]> Link: https://lkml.kernel.org/r/[email protected]
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