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Subject: Re: [Xen-devel] [PATCH v3 0/2] Clear .bss for VP guests
To: Boris Ostrovsky <boris.ostrovsky@oracle.com>, <konrad.wilk@oracle.com>,
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From: =?UTF-8?Q?Roger_Pau_Monn=c3=a9?= <roger.pau@citrix.com>
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Date: Fri, 26 Feb 2016 11:53:30 +0100
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El 25/2/16 a les 16:16, Boris Ostrovsky ha escrit:
> PV guests need to have their .bss zeroed out since it is not guaranteed
> to be cleared by Xen's domain builder

I guess I'm missing something, but elf_load_image (in libelf-loader.c)
seems to be able to clear segments (it will zero the memory between
p_paddr + p_filesz and p_paddr + p_memsz) while loading the ELF into
memory, so if the program headers are correctly setup the .bss should be
zeroed out AFAICT.

Roger.