Re: [PATCH v1 2/3] Enable adapter_indicators_set to use mapped pages

[Matthew Rosato <mjrosato@linux.ibm.com>]

On 3/7/26 10:04 PM, Douglas Freimuth wrote:
> Patch 2: This patch enables adapter_indicators_set to use mapped pages.

See comments from patch 1 of this series.

> If adapter indicator pages are not mapped then local mapping is done as
> it is prior to this patch. For example, Secure Execution environments
> will take the local mapping path as it does prior to this patch.
> 
> Signed-off-by: Douglas Freimuth <freimuth@linux.ibm.com>



> -	idx = srcu_read_lock(&kvm->srcu);
> -	map = page_address(ind_page);
> -	bit = get_ind_bit(adapter_int->ind_addr,
> -			  adapter_int->ind_offset, adapter->swap);
> -	set_bit(bit, map);
> -	mark_page_dirty(kvm, adapter_int->ind_gaddr >> PAGE_SHIFT);
> -	set_page_dirty_lock(ind_page);
> -	map = page_address(summary_page);
> -	bit = get_ind_bit(adapter_int->summary_addr,
> -			  adapter_int->summary_offset, adapter->swap);
> -	summary_set = test_and_set_bit(bit, map);
> -	mark_page_dirty(kvm, adapter_int->summary_gaddr >> PAGE_SHIFT);
> -	set_page_dirty_lock(summary_page);
> -	srcu_read_unlock(&kvm->srcu, idx);
> -
> -	put_page(ind_page);
> -	put_page(summary_page);


Hitting compile errors if only apply up to this patch, looks like this area is the culprit.

I think you're missing a few lines here that accidentally wound up in patch 3?

+	summary_info = get_map_info(adapter, adapter_int->summary_addr);
+	if (!summary_info) {


> +		summary_page = get_map_page(kvm, adapter_int->summary_addr);
> +		if (!summary_page) {
> +			put_page(ind_page);
> +			return -1;
> +		}