linux-kernel - Re: [PATCH v5 5/5] s390/vmcore: Use vmcore for zfcpdump

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Message-ID: <51B7B728.9000803@jp.fujitsu.com>
Date:	Wed, 12 Jun 2013 08:47:52 +0900
From:	HATAYAMA Daisuke <d.hatayama@...fujitsu.com>
To:	Michael Holzheu <holzheu@...ux.vnet.ibm.com>
CC:	Vivek Goyal <vgoyal@...hat.com>,
	Heiko Carstens <heiko.carstens@...ibm.com>,
	kexec@...ts.infradead.org, Jan Willeke <willeke@...ibm.com>,
	linux-kernel@...r.kernel.org,
	Martin Schwidefsky <schwidefsky@...ibm.com>
Subject: Re: [PATCH v5 5/5] s390/vmcore: Use vmcore for zfcpdump

(2013/06/08 1:56), Michael Holzheu wrote:
<cut>
> @@ -82,6 +116,43 @@ int remap_oldmem_pfn_range(struct vm_area_struct *vma, unsigned long from,
>   }
>
>   /*
> + * Remap "oldmem" for zfcpdump
> + *
> + * We only map available memory above ZFCPDUMP_HSA_SIZE. Memory below
> + * ZFCPDUMP_HSA_SIZE is read on demand using the copy_oldmem_page() function.
> + */
> +static int remap_oldmem_pfn_range_zfcpdump(struct vm_area_struct *vma,
> +					   unsigned long from,
> +					   unsigned long pfn,
> +					   unsigned long size, pgprot_t prot)
> +{
> +	unsigned long size_hsa;
> +
> +	if (pfn < ZFCPDUMP_HSA_SIZE >> PAGE_SHIFT) {
> +		size_hsa = min(size, OLDMEM_SIZE - (pfn << PAGE_SHIFT));

ZFCPDUMP_HSA_SIZE?

-- 
Thanks.
HATAYAMA, Daisuke

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