From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
To: Ian Campbell <ian.campbell@citrix.com>
Cc: xen-devel@lists.xensource.com
Subject: Re: [PATCH 08 of 15] hvmloader: Add a simple "scratch allocator"
Date: Thu, 2 Jun 2011 15:43:31 -0400 [thread overview]
Message-ID: <20110602194331.GA32344@dumpdata.com> (raw)
In-Reply-To: <3c920f4ec4f24e1c1347.1306921203@cosworth.uk.xensource.com>
> +void *scratch_alloc(uint32_t size, uint32_t align)
> +{
> + uint32_t s, e;
> +
> + /* Align to at least one kilobyte. */
> + if ( align < 1024 )
> + align = 1024;
> +
> + s = (scratch_start + align - 1) & ~(align - 1);
> + e = s + size - 1;
> +
> + BUG_ON(e < s);
> +
> + scratch_start = e;
> +
> + return (void *)(unsigned long)s;
Why the double cast?
next prev parent reply other threads:[~2011-06-02 19:43 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-01 9:39 [PATCH 00 of 15] Further SeaBIOS support Ian Campbell
2011-06-01 9:39 ` [PATCH 01 of 15] hvmloader: allow per-BIOS decision on loading option ROMS Ian Campbell
2011-06-01 9:39 ` [PATCH 02 of 15] hvmloader: enable PCI_COMMAND_IO on primary VGA device Ian Campbell
2011-06-01 10:04 ` Ian Campbell
2011-06-01 9:39 ` [PATCH 03 of 15] hvmloader: setup PCI bus in a common function again Ian Campbell
2011-06-01 10:05 ` Ian Campbell
2011-06-01 10:44 ` Ian Campbell
2011-06-01 9:39 ` [PATCH 04 of 15] hvmloader: setup APICs " Ian Campbell
2011-06-01 9:40 ` [PATCH 05 of 15] hvmloader: call SMP setup from common code again Ian Campbell
2011-06-01 9:40 ` [PATCH 06 of 15] hvmloader: make ACPI initialisation hook more general Ian Campbell
2011-06-01 9:40 ` [PATCH 07 of 15] hvmloader: make SMBIOS initialisation " Ian Campbell
2011-06-01 9:40 ` [PATCH 08 of 15] hvmloader: Add a simple "scratch allocator" Ian Campbell
2011-06-02 19:43 ` Konrad Rzeszutek Wilk [this message]
2011-06-02 20:00 ` Keir Fraser
2011-06-01 9:40 ` [PATCH 09 of 15] hvmloader: refactor BIOS info setup Ian Campbell
2011-06-01 9:40 ` [PATCH 10 of 15] hvmloader: return MPFPS from create_mp_tables() Ian Campbell
2011-06-01 9:40 ` [PATCH 11 of 15] hvmloader: allow create_mp_tables() to allocate the table Ian Campbell
2011-06-01 9:40 ` [PATCH 12 of 15] hvmloader: smbios: allow the entry point data structure to be located separately Ian Campbell
2011-06-01 9:40 ` [PATCH 13 of 15] hvmloader: further support for SeaBIOS Ian Campbell
2011-06-01 9:40 ` [PATCH 14 of 15] hvmloader: allow the possibility to allocate the size of smbios table we actually need Ian Campbell
2011-06-01 9:40 ` [PATCH 15 of 15] hvmloader: add code to generate a $PIR table Ian Campbell
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