On Mon, Nov 05, 2007 at 08:32:24AM -0800, Ray Lee wrote: > (Don't trim cc:s.) > > On Nov 5, 2007 8:00 AM, Bo Brantén <[EMAIL PROTECTED]> wrote: > > >> Intel Core 2 Quad > >> and I noticed that the 64-bit versions was at least 10 times slower than > >> the > >> 32-bit versions, > > > > > After I uppgraded the BIOS the mtrr looks like below, and now it works if > > I boot with mem=4736M so I can use all memory but it still doesn't work > > without the mem parameter then it will run as slow as before.
Then the BIOS is still broken Comapl in to your motherboard vendor. > > > > reg00: base=0x00000000 ( 0MB), size=2048MB: write-back, count=1 > > reg01: base=0x80000000 (2048MB), size=1024MB: write-back, count=1 > > reg02: base=0xc0000000 (3072MB), size= 256MB: write-back, count=1 > > reg03: base=0xcf800000 (3320MB), size= 8MB: uncachable, count=1 > > reg04: base=0xcf700000 (3319MB), size= 1MB: uncachable, count=1 > > reg05: base=0x100000000 (4096MB), size= 512MB: write-back, count=1 > > reg06: base=0x120000000 (4608MB), size= 128MB: write-back, count=1 > > Jesse Barnes (cc:d) wrote a patch to address this, I think (x86: trim > memory not covered by WB MTRRs), but as far as I can tell it hasn't > been merged yet. System is Intel, 4gb of RAM. It wasn't merged because it broke booting on some systems. Besides the memory would be still lost -- all it did was to automate the "mem=XXXX" line. -Andi - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
