From: Christoph Hellwig <hch@infradead.org>
To: Lai Jiangshan <jiangshanlai@gmail.com>
Cc: linux-kernel@vger.kernel.org,
Hou Wenlong <houwenlong.hwl@antgroup.com>,
Lai Jiangshan <jiangshan.ljs@antgroup.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Peter Zijlstra <peterz@infradead.org>,
Sean Christopherson <seanjc@google.com>,
Thomas Gleixner <tglx@linutronix.de>,
Borislav Petkov <bp@alien8.de>, Ingo Molnar <mingo@redhat.com>,
kvm@vger.kernel.org, Paolo Bonzini <pbonzini@redhat.com>,
x86@kernel.org, Kees Cook <keescook@chromium.org>,
Juergen Gross <jgross@suse.com>,
Andrew Morton <akpm@linux-foundation.org>,
Uladzislau Rezki <urezki@gmail.com>,
Christoph Hellwig <hch@infradead.org>,
Lorenzo Stoakes <lstoakes@gmail.com>,
linux-mm@kvack.org
Subject: Re: [RFC PATCH 15/73] mm/vmalloc: Add a helper to reserve a contiguous and aligned kernel virtual area
Date: Tue, 27 Feb 2024 06:56:24 -0800 [thread overview]
Message-ID: <Zd34GHtHlnpPtg5v@infradead.org> (raw)
In-Reply-To: <20240226143630.33643-16-jiangshanlai@gmail.com>
On Mon, Feb 26, 2024 at 10:35:32PM +0800, Lai Jiangshan wrote:
> From: Hou Wenlong <houwenlong.hwl@antgroup.com>
>
> PVM needs to reserve a contiguous and aligned kernel virtual area for
Who is "PVM", and why does it need aligned virtual memory space?
> +extern struct vm_struct *get_vm_area_align(unsigned long size, unsigned long align,
No need for the extern here.
next prev parent reply other threads:[~2024-02-27 14:56 UTC|newest]
Thread overview: 82+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-26 14:35 [RFC PATCH 00/73] KVM: x86/PVM: Introduce a new hypervisor Lai Jiangshan
2024-02-26 14:35 ` [RFC PATCH 01/73] KVM: Documentation: Add the specification for PVM Lai Jiangshan
2024-02-26 14:35 ` [RFC PATCH 02/73] x86/ABI/PVM: Add PVM-specific ABI header file Lai Jiangshan
2024-02-26 14:35 ` [RFC PATCH 03/73] x86/entry: Implement switcher for PVM VM enter/exit Lai Jiangshan
2024-02-26 14:35 ` [RFC PATCH 04/73] x86/entry: Implement direct switching for the switcher Lai Jiangshan
2024-02-26 14:35 ` [RFC PATCH 05/73] KVM: x86: Set 'vcpu->arch.exception.injected' as true before vendor callback Lai Jiangshan
2024-02-26 14:35 ` [RFC PATCH 06/73] KVM: x86: Move VMX interrupt/nmi handling into kvm.ko Lai Jiangshan
2024-02-26 14:35 ` [RFC PATCH 07/73] KVM: x86/mmu: Adapt shadow MMU for PVM Lai Jiangshan
2024-02-26 14:35 ` [RFC PATCH 08/73] KVM: x86: Allow hypercall handling to not skip the instruction Lai Jiangshan
2024-02-26 14:35 ` [RFC PATCH 09/73] KVM: x86: Add PVM virtual MSRs into emulated_msrs_all[] Lai Jiangshan
2024-02-26 14:35 ` [RFC PATCH 10/73] KVM: x86: Introduce vendor feature to expose vendor-specific CPUID Lai Jiangshan
2024-02-26 14:35 ` [RFC PATCH 11/73] KVM: x86: Implement gpc refresh for guest usage Lai Jiangshan
2024-02-26 14:35 ` [RFC PATCH 12/73] KVM: x86: Add NR_VCPU_SREG in SREG enum Lai Jiangshan
2024-02-26 14:35 ` [RFC PATCH 13/73] KVM: x86/emulator: Reinject #GP if instruction emulation failed for PVM Lai Jiangshan
2024-02-26 14:35 ` [RFC PATCH 14/73] KVM: x86: Create stubs for PVM module as a new vendor Lai Jiangshan
2024-02-26 14:35 ` [RFC PATCH 15/73] mm/vmalloc: Add a helper to reserve a contiguous and aligned kernel virtual area Lai Jiangshan
2024-02-27 14:56 ` Christoph Hellwig [this message]
2024-02-27 17:07 ` Lai Jiangshan
2024-02-26 14:35 ` [RFC PATCH 16/73] KVM: x86/PVM: Implement host mmu initialization Lai Jiangshan
2024-02-26 14:35 ` [RFC PATCH 17/73] KVM: x86/PVM: Implement module initialization related callbacks Lai Jiangshan
2024-02-26 14:35 ` [RFC PATCH 18/73] KVM: x86/PVM: Implement VM/VCPU " Lai Jiangshan
2024-02-26 14:35 ` [RFC PATCH 19/73] x86/entry: Export 32-bit ignore syscall entry and __ia32_enabled variable Lai Jiangshan
2024-02-26 14:35 ` [RFC PATCH 20/73] KVM: x86/PVM: Implement vcpu_load()/vcpu_put() related callbacks Lai Jiangshan
2024-02-26 14:35 ` [RFC PATCH 21/73] KVM: x86/PVM: Implement vcpu_run() callbacks Lai Jiangshan
2024-02-26 14:35 ` [RFC PATCH 22/73] KVM: x86/PVM: Handle some VM exits before enable interrupts Lai Jiangshan
2024-02-26 14:35 ` [RFC PATCH 23/73] KVM: x86/PVM: Handle event handling related MSR read/write operation Lai Jiangshan
2024-02-26 14:35 ` [RFC PATCH 24/73] KVM: x86/PVM: Introduce PVM mode switching Lai Jiangshan
2024-02-26 14:35 ` [RFC PATCH 25/73] KVM: x86/PVM: Implement APIC emulation related callbacks Lai Jiangshan
2024-02-26 14:35 ` [RFC PATCH 26/73] KVM: x86/PVM: Implement event delivery flags " Lai Jiangshan
2024-02-26 14:35 ` [RFC PATCH 27/73] KVM: x86/PVM: Implement event injection " Lai Jiangshan
2024-02-26 14:35 ` [RFC PATCH 28/73] KVM: x86/PVM: Handle syscall from user mode Lai Jiangshan
2024-02-26 14:35 ` [RFC PATCH 29/73] KVM: x86/PVM: Implement allowed range checking for #PF Lai Jiangshan
2024-02-26 14:35 ` [RFC PATCH 30/73] KVM: x86/PVM: Implement segment related callbacks Lai Jiangshan
2024-02-26 14:35 ` [RFC PATCH 31/73] KVM: x86/PVM: Implement instruction emulation for #UD and #GP Lai Jiangshan
2024-02-26 14:35 ` [RFC PATCH 32/73] KVM: x86/PVM: Enable guest debugging functions Lai Jiangshan
2024-02-26 14:35 ` [RFC PATCH 33/73] KVM: x86/PVM: Handle VM-exit due to hardware exceptions Lai Jiangshan
2024-02-26 14:35 ` [RFC PATCH 34/73] KVM: x86/PVM: Handle ERETU/ERETS synthetic instruction Lai Jiangshan
2024-02-26 14:35 ` [RFC PATCH 35/73] KVM: x86/PVM: Handle PVM_SYNTHETIC_CPUID " Lai Jiangshan
2024-02-26 14:35 ` [RFC PATCH 36/73] KVM: x86/PVM: Handle KVM hypercall Lai Jiangshan
2024-02-26 14:35 ` [RFC PATCH 37/73] KVM: x86/PVM: Use host PCID to reduce guest TLB flushing Lai Jiangshan
2024-02-26 14:35 ` [RFC PATCH 38/73] KVM: x86/PVM: Handle hypercalls for privilege instruction emulation Lai Jiangshan
2024-02-26 14:35 ` [RFC PATCH 39/73] KVM: x86/PVM: Handle hypercall for CR3 switching Lai Jiangshan
2024-02-26 14:35 ` [RFC PATCH 40/73] KVM: x86/PVM: Handle hypercall for loading GS selector Lai Jiangshan
2024-02-26 14:35 ` [RFC PATCH 41/73] KVM: x86/PVM: Allow to load guest TLS in host GDT Lai Jiangshan
2024-02-26 14:35 ` [RFC PATCH 42/73] KVM: x86/PVM: Support for kvm_exit() tracepoint Lai Jiangshan
2024-02-26 14:36 ` [RFC PATCH 43/73] KVM: x86/PVM: Enable direct switching Lai Jiangshan
2024-02-26 14:36 ` [RFC PATCH 44/73] KVM: x86/PVM: Implement TSC related callbacks Lai Jiangshan
2024-02-26 14:36 ` [RFC PATCH 45/73] KVM: x86/PVM: Add dummy PMU " Lai Jiangshan
2024-02-26 14:36 ` [RFC PATCH 46/73] KVM: x86/PVM: Support for CPUID faulting Lai Jiangshan
2024-02-26 14:36 ` [RFC PATCH 47/73] KVM: x86/PVM: Handle the left supported MSRs in msrs_to_save_base[] Lai Jiangshan
2024-02-26 14:36 ` [RFC PATCH 48/73] KVM: x86/PVM: Implement system registers setting callbacks Lai Jiangshan
2024-02-26 14:36 ` [RFC PATCH 49/73] KVM: x86/PVM: Implement emulation for non-PVM mode Lai Jiangshan
2024-02-26 14:36 ` [RFC PATCH 50/73] x86/tools/relocs: Cleanup cmdline options Lai Jiangshan
2024-02-26 14:36 ` [RFC PATCH 51/73] x86/tools/relocs: Append relocations into input file Lai Jiangshan
2024-02-26 14:36 ` [RFC PATCH 52/73] x86/boot: Allow to do relocation for uncompressed kernel Lai Jiangshan
2024-02-26 14:36 ` [RFC PATCH 53/73] x86/pvm: Add Kconfig option and the CPU feature bit for PVM guest Lai Jiangshan
2024-02-26 14:36 ` [RFC PATCH 54/73] x86/pvm: Detect PVM hypervisor support Lai Jiangshan
2024-02-26 14:36 ` [RFC PATCH 55/73] x86/pvm: Relocate kernel image to specific virtual address range Lai Jiangshan
2024-02-26 14:36 ` [RFC PATCH 56/73] x86/pvm: Relocate kernel image early in PVH entry Lai Jiangshan
2024-02-26 14:36 ` [RFC PATCH 57/73] x86/pvm: Make cpu entry area and vmalloc area variable Lai Jiangshan
2024-02-26 14:36 ` [RFC PATCH 58/73] x86/pvm: Relocate kernel address space layout Lai Jiangshan
2024-02-26 14:36 ` [RFC PATCH 59/73] x86/pti: Force enabling KPTI for PVM guest Lai Jiangshan
2024-02-26 14:36 ` [RFC PATCH 60/73] x86/pvm: Add event entry/exit and dispatch code Lai Jiangshan
2024-02-26 14:36 ` [RFC PATCH 61/73] x86/pvm: Allow to install a system interrupt handler Lai Jiangshan
2024-02-26 14:36 ` [RFC PATCH 62/73] x86/pvm: Add early kernel event entry and dispatch code Lai Jiangshan
2024-02-26 14:36 ` [RFC PATCH 63/73] x86/pvm: Add hypercall support Lai Jiangshan
2024-02-26 14:36 ` [RFC PATCH 64/73] x86/pvm: Enable PVM event delivery Lai Jiangshan
2024-02-26 14:36 ` [RFC PATCH 65/73] x86/kvm: Patch KVM hypercall as PVM hypercall Lai Jiangshan
2024-02-26 14:36 ` [RFC PATCH 66/73] x86/pvm: Use new cpu feature to describe XENPV and PVM Lai Jiangshan
2024-02-26 14:36 ` [RFC PATCH 67/73] x86/pvm: Implement cpu related PVOPS Lai Jiangshan
2024-02-26 14:36 ` [RFC PATCH 68/73] x86/pvm: Implement irq " Lai Jiangshan
2024-02-26 14:36 ` [RFC PATCH 69/73] x86/pvm: Implement mmu " Lai Jiangshan
2024-02-26 14:36 ` [RFC PATCH 70/73] x86/pvm: Don't use SWAPGS for gsbase read/write Lai Jiangshan
2024-02-26 14:36 ` [RFC PATCH 71/73] x86/pvm: Adapt pushf/popf in this_cpu_cmpxchg16b_emu() Lai Jiangshan
2024-02-26 14:36 ` [RFC PATCH 72/73] x86/pvm: Use RDTSCP as default in vdso_read_cpunode() Lai Jiangshan
2024-02-26 14:36 ` [RFC PATCH 73/73] x86/pvm: Disable some unsupported syscalls and features Lai Jiangshan
2024-02-26 14:49 ` [RFC PATCH 00/73] KVM: x86/PVM: Introduce a new hypervisor Paolo Bonzini
2024-02-27 17:27 ` Sean Christopherson
2024-02-29 9:33 ` David Woodhouse
2024-03-01 14:00 ` Lai Jiangshan
2024-02-29 14:55 ` Lai Jiangshan
2024-03-06 11:05 ` Like Xu
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