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From: Thomas Gleixner <tglx@linutronix.de>
To: Maya Nakamura <m.maya.nakamura@gmail.com>
Cc: mikelley@microsoft.com, kys@microsoft.com,
	haiyangz@microsoft.com, sthemmin@microsoft.com,
	sashal@kernel.org, x86@kernel.org, linux-hyperv@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3 2/5] x86: hv: hv_init.c: Add functions to allocate/deallocate page for Hyper-V
Date: Thu, 27 Jun 2019 23:38:14 +0200 (CEST)
Message-ID: <alpine.DEB.2.21.1906272334560.32342@nanos.tec.linutronix.de> (raw)
In-Reply-To: <d19c28cda88bf1706baff883380dfd321da30a68.1560837096.git.m.maya.nakamura@gmail.com>

Maya,

On Tue, 18 Jun 2019, Maya Nakamura wrote:

> diff --git a/arch/x86/hyperv/hv_init.c b/arch/x86/hyperv/hv_init.c
> index 0e033ef11a9f..e8960a83add7 100644
> --- a/arch/x86/hyperv/hv_init.c
> +++ b/arch/x86/hyperv/hv_init.c
> @@ -37,6 +37,20 @@ EXPORT_SYMBOL_GPL(hyperv_pcpu_input_arg);
>  u32 hv_max_vp_index;
>  EXPORT_SYMBOL_GPL(hv_max_vp_index);
>  
> +void *hv_alloc_hyperv_page(void)
> +{
> +	BUILD_BUG_ON(PAGE_SIZE != HV_HYP_PAGE_SIZE);
> +
> +	return (void *)__get_free_page(GFP_KERNEL);
> +}
> +EXPORT_SYMBOL_GPL(hv_alloc_hyperv_page);
> +
> +void hv_free_hyperv_page(unsigned long addr)
> +{
> +	free_page(addr);
> +}
> +EXPORT_SYMBOL_GPL(hv_free_hyperv_page);

These functions need to be declared in a header file.

Thanks,

	tglx



  reply index

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-06-18  6:09 [PATCH v3 0/5] hv: Remove dependencies on guest page size Maya Nakamura
2019-06-18  6:11 ` [PATCH v3 1/5] x86: hv: hyperv-tlfs.h: Create and use Hyper-V page definitions Maya Nakamura
2019-06-18  6:13 ` [PATCH v3 2/5] x86: hv: hv_init.c: Add functions to allocate/deallocate page for Hyper-V Maya Nakamura
2019-06-27 21:38   ` Thomas Gleixner [this message]
2019-06-29  6:50     ` Maya Nakamura
2019-06-18  6:14 ` [PATCH v3 3/5] hv: vmbus: Replace page definition with Hyper-V specific one Maya Nakamura
2019-06-18  6:15 ` [PATCH v3 4/5] HID: hv: Remove dependencies on PAGE_SIZE for ring buffer Maya Nakamura
2019-06-18  6:17 ` [PATCH v3 5/5] Input: " Maya Nakamura

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