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References: <20220825060819.74303-1-liaochang1@huawei.com> <20220825060819.74303-2-liaochang1@huawei.com>
In-Reply-To: <20220825060819.74303-2-liaochang1@huawei.com>
From:   Andy Shevchenko <andy.shevchenko@gmail.com>
Date:   Thu, 25 Aug 2022 11:29:57 +0300
Message-ID: <CAHp75VdZrcouWXor1DjdzzWEsUC87+CkD4ZqMd165H-QXMgvRQ@mail.gmail.com>
Subject: Re: [PATCH 2/2] irqchip/gic-v3-its: Release the allocated but
 unmapped bits in LPI maps
To:     Liao Chang <liaochang1@huawei.com>
Cc:     Thomas Gleixner <tglx@linutronix.de>,
        Marc Zyngier <maz@kernel.org>,
        Samuel Holland <samuel@sholland.org>,
        Bartosz Golaszewski <brgl@bgdev.pl>,
        Michael Kelley <mikelley@microsoft.com>,
        Jianmin Lv <lvjianmin@loongson.cn>,
        Mark Rutland <mark.rutland@arm.com>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
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On Thu, Aug 25, 2022 at 9:11 AM Liao Chang <liaochang1@huawei.com> wrote:
>
> If one hwirq allocated in ITS domain followed by some unmapped bits, the
> number of unmapped bits will be recorded, so that this hwirq and
> following unmapped bits could be released both.

...

> +       /*
> +        * In order to free dangling hwirq bits, kernel uses the irq_data

the kernel

> +        * of hwirq which is followed by dangling bits to record dangling
> +        * number.
> +        */


-- 
With Best Regards,
Andy Shevchenko