From: David Woodhouse <dwmw2-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
To: Matt Fleming <matt.fleming-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Cc: Jan Beulich <JBeulich-IBi9RG/b67k@public.gmane.org>,
Bjorn Helgaas <bhelgaas-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>,
Matthew Garrett <mjg59-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org>,
linux-efi <linux-efi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: Re: [PATCH v2] fix setup_efi_pci()
Date: Fri, 25 Jan 2013 09:32:00 -0600 [thread overview]
Message-ID: <1359127920.24865.24.camel@shinybook.infradead.org> (raw)
In-Reply-To: <1359103537.2496.132.camel-ZqTwcBeJ+wsBof6jY8KHXm7IUlhRatedral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
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On Fri, 2013-01-25 at 08:45 +0000, Matt Fleming wrote:
>
> Matthew, what guarantees do we have that the memory we've allocated for
> the PCI ROMs isn't going to be reused? I suspect what's needed is for
> parse_setup_data() to reserve the SETUP_PCI regions, just like you would
> for any other key data structure.
>
> It's the kernel's responsibility to protect any EFI_LOADER_DATA regions
> that it needs, we shouldn't have to trick ourselves by using the
> EFI_RUNTIME_SERVICES_DATA pool for allocations.
When pondering this, please remember that it has to be coherently passed
off to the next kernel during kexec, too.
--
dwmw2
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prev parent reply other threads:[~2013-01-25 15:32 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-18 12:35 [PATCH v2] fix setup_efi_pci() Jan Beulich
[not found] ` <50F94F9202000078000B74EE-ce6RLXgGx+vWGUEhTRrCg1aTQe2KTcn/@public.gmane.org>
2013-01-24 18:20 ` Matt Fleming
[not found] ` <1359051621.2496.95.camel-ZqTwcBeJ+wsBof6jY8KHXm7IUlhRatedral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2013-01-25 7:41 ` Jan Beulich
[not found] ` <5102452202000078000B9755-ce6RLXgGx+vWGUEhTRrCg1aTQe2KTcn/@public.gmane.org>
2013-01-25 8:45 ` Matt Fleming
[not found] ` <1359103537.2496.132.camel-ZqTwcBeJ+wsBof6jY8KHXm7IUlhRatedral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2013-01-25 11:04 ` Matt Fleming
2013-01-25 15:25 ` Matthew Garrett
2013-01-25 15:32 ` David Woodhouse [this message]
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