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| author | David Woodhouse <dwmw2@infradead.org> | 2007-08-01 10:23:57 (GMT) |
|---|---|---|
| committer | David Woodhouse <dwmw2@infradead.org> | 2007-08-01 10:23:57 (GMT) |
| commit | 440fdb53b4ae58602711b5b8c3a139ace2404dbb (patch) | |
| tree | c6fb88d6ad537ec53aeecadc75a61ab6147d4c9c /arch/i386/boot/edd.c | |
| parent | 8b2b403ce0f1a816b7a6a4f47c8798003b26c07a (diff) | |
| parent | 8d4fbcfbe0a4bfc73e7f0297c59ae514e1f1436f (diff) | |
| download | linux-fsl-qoriq-440fdb53b4ae58602711b5b8c3a139ace2404dbb.tar.xz | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'arch/i386/boot/edd.c')
| -rw-r--r-- | arch/i386/boot/edd.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/i386/boot/edd.c b/arch/i386/boot/edd.c index 25a2824..77d92da 100644 --- a/arch/i386/boot/edd.c +++ b/arch/i386/boot/edd.c @@ -72,17 +72,18 @@ static u32 read_mbr_sig(u8 devno, struct edd_info *ei) u32 mbrsig; u32 buf_base, mbr_base; extern char _end[]; - static char mbr_buf[1024]; sector_size = ei->params.bytes_per_sector; if (!sector_size) sector_size = 512; /* Best available guess */ + /* Produce a naturally aligned buffer on the heap */ buf_base = (ds() << 4) + (u32)&_end; mbr_base = (buf_base+sector_size-1) & ~(sector_size-1); - mbrbuf_ptr = mbr_buf + (mbr_base-buf_base); + mbrbuf_ptr = _end + (mbr_base-buf_base); mbrbuf_end = mbrbuf_ptr + sector_size; + /* Make sure we actually have space on the heap... */ if (!(boot_params.hdr.loadflags & CAN_USE_HEAP)) return 0; if (mbrbuf_end > (char *)(size_t)boot_params.hdr.heap_end_ptr) |