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SubjectRe: [PATCH v2] KVM: arm64: fix doc warnings in mmu code
On Wed, Sep 16, 2020 at 10:00:39AM +0800, Xiaofei Tan wrote:
> Fix following warnings caused by mismatch bewteen function parameters
> and comments.
> arch/arm64/kvm/mmu.c:128: warning: Function parameter or member 'mmu' not described in '__unmap_stage2_range'
> arch/arm64/kvm/mmu.c:128: warning: Function parameter or member 'may_block' not described in '__unmap_stage2_range'
> arch/arm64/kvm/mmu.c:128: warning: Excess function parameter 'kvm' description in '__unmap_stage2_range'
> arch/arm64/kvm/mmu.c:499: warning: Function parameter or member 'writable' not described in 'kvm_phys_addr_ioremap'
> arch/arm64/kvm/mmu.c:538: warning: Function parameter or member 'mmu' not described in 'stage2_wp_range'
> arch/arm64/kvm/mmu.c:538: warning: Excess function parameter 'kvm' description in 'stage2_wp_range'
>
> Signed-off-by: Xiaofei Tan <tanxiaofei@huawei.com>
> ---
> arch/arm64/kvm/mmu.c | 6 ++++--
> 1 file changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/arch/arm64/kvm/mmu.c b/arch/arm64/kvm/mmu.c
> index e8a51799..909e995 100644
> --- a/arch/arm64/kvm/mmu.c
> +++ b/arch/arm64/kvm/mmu.c
> @@ -114,9 +114,10 @@ static bool kvm_is_device_pfn(unsigned long pfn)
> */
> /**
> * unmap_stage2_range -- Clear stage2 page table entries to unmap a range
> - * @kvm: The VM pointer
> + * @mmu: pointer to mmu structure to operate on
> * @start: The intermediate physical base address of the range to unmap
> * @size: The size of the area to unmap
> + * @may_block: The flag that if block is allowed here

Whether or not we are permitted to block.

> *
> * Clear a range of stage-2 mappings, lowering the various ref-counts. Must
> * be called while holding mmu_lock (unless for freeing the stage2 pgd before
> @@ -493,6 +494,7 @@ void kvm_free_stage2_pgd(struct kvm_s2_mmu *mmu)
> * @guest_ipa: The IPA at which to insert the mapping
> * @pa: The physical address of the device
> * @size: The size of the mapping
> + * @writable: If it is writable here

Whether or not to create a writable mapping.

> */
> int kvm_phys_addr_ioremap(struct kvm *kvm, phys_addr_t guest_ipa,
> phys_addr_t pa, unsigned long size, bool writable)
> @@ -530,7 +532,7 @@ int kvm_phys_addr_ioremap(struct kvm *kvm, phys_addr_t guest_ipa,
>
> /**
> * stage2_wp_range() - write protect stage2 memory region range
> - * @kvm: The KVM pointer
> + * @mmu: pointer to mmu structure to operate on

The KVM stage-2 MMU pointer.

Will

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