A lot of motherboards do not support memory over 4 Gb. Check that your motherboard supports 8 Gb of memory and also check the BIOS options. Does your system BIOS "see" 8 Gb? If not, and there are no options for remapping memory, you might need to replace your motherboard. Bob Cochran Lawrence E. Graves wrote: > If I am not mistaken, I believe the processor does not dictate memory > support, your motherboard does that. > > > > On Sat, 2009-03-07 at 16:08 +0500, saqib butt wrote: > >> hi, >> >> I have Intel Pentium Dual Core E2180 / 2 GHz processor. i just >> upgraded my system with 4 memory sticks i.e. 8GB of RAM due to my >> requirements. >> >> Now the issue that i am facing is that my 64bit fedora system does not >> showing and supporting more than 3.2 gigs of RAM when i consult >> "/proc/meminfo", "free -m" and "top". >> >> Also I am getting the following system prompt, >> >> ===== >> >> Kernel failure message 1: >> WARNING: BIOS bug: CPU MTRRs don't cover all of memory, losing 4800MB >> of RAM. >> ------------[ cut here ]------------ >> WARNING: at arch/x86/kernel/cpu/mtrr/main.c:1557 >> mtrr_trim_uncached_memory+0x2c3/0x2ee() (Not tainted) >> Hardware name: >> Modules linked in: >> Pid: 0, comm: swapper Not tainted 2.6.27.19-170.2.35.fc10.x86_64 #1 >> Mar 7 15:54:38 localhost kernel: Call Trace: >> [<ffffffff81041a52>] warn_on_slowpath+0x80/0xb0 >> [<ffffffff8116e66a>] ? generic_swap+0x0/0x23 >> [<ffffffff815a9fd3>] ? cmp_range+0x0/0xb >> [<ffffffff81331660>] ? printk+0x3c/0x44 >> [<ffffffff815ab54b>] mtrr_trim_uncached_memory+0x2c3/0x2ee >> [<ffffffff81331660>] ? printk+0x3c/0x44 >> [<ffffffff8159f140>] ? early_idt_handler+0x0/0x71 >> [<ffffffff815a6e2c>] setup_arch+0x410/0x777 >> [<ffffffff8133396b>] ? _spin_lock+0xa/0xc >> [<ffffffff8159fa34>] start_kernel+0x8d/0x3aa >> [<ffffffff8159f2ba>] x86_64_start_reservations+0xa5/0xa9 >> [<ffffffff8159f3ae>] x86_64_start_kernel+0xcd/0xdc >> Mar 7 15:54:38 localhost kernel: ---[ end trace 4eaa2a86a8e2da22 ]--- >> >> >> Kernel failure message 2: >> WARNING: BIOS bug: CPU MTRRs don't cover all of memory, losing 4800MB >> of RAM. >> ------------[ cut here ]------------ >> WARNING: at arch/x86/kernel/cpu/mtrr/main.c:1557 >> mtrr_trim_uncached_memory+0x2c3/0x2ee() (Not tainted) >> Hardware name: >> Modules linked in: >> Pid: 0, comm: swapper Not tainted 2.6.27.19-170.2.35.fc10.x86_64 #1 >> Mar 7 15:51:36 localhost kernel: Call Trace: >> [<ffffffff81041a52>] warn_on_slowpath+0x80/0xb0 >> [<ffffffff8116e66a>] ? generic_swap+0x0/0x23 >> [<ffffffff815a9fd3>] ? cmp_range+0x0/0xb >> [<ffffffff81331660>] ? printk+0x3c/0x44 >> [<ffffffff815ab54b>] mtrr_trim_uncached_memory+0x2c3/0x2ee >> [<ffffffff81331660>] ? printk+0x3c/0x44 >> [<ffffffff8159f140>] ? early_idt_handler+0x0/0x71 >> [<ffffffff815a6e2c>] setup_arch+0x410/0x777 >> [<ffffffff8133396b>] ? _spin_lock+0xa/0xc >> [<ffffffff8159fa34>] start_kernel+0x8d/0x3aa >> [<ffffffff8159f2ba>] x86_64_start_reservations+0xa5/0xa9 >> [<ffffffff8159f3ae>] x86_64_start_kernel+0xcd/0xdc >> Mar 7 15:51:36 localhost kernel: ---[ end trace 4eaa2a86a8e2da22 ]--- >> >> >> Kernel failure message 3: >> WARNING: BIOS bug: CPU MTRRs don't cover all of memory, losing 4800MB >> of RAM. >> ------------[ cut here ]------------ >> WARNING: at arch/x86/kernel/cpu/mtrr/main.c:1557 >> mtrr_trim_uncached_memory+0x2c3/0x2ee() (Not tainted) >> Hardware name: >> Modules linked in: >> Pid: 0, comm: swapper Not tainted 2.6.27.19-170.2.35.fc10.x86_64 #1 >> Mar 7 15:33:02 localhost kernel: Call Trace: >> [<ffffffff81041a52>] warn_on_slowpath+0x80/0xb0 >> [<ffffffff8116e66a>] ? generic_swap+0x0/0x23 >> [<ffffffff815a9fd3>] ? cmp_range+0x0/0xb >> [<ffffffff81331660>] ? printk+0x3c/0x44 >> [<ffffffff815ab54b>] mtrr_trim_uncached_memory+0x2c3/0x2ee >> [<ffffffff81331660>] ? printk+0x3c/0x44 >> [<ffffffff8159f140>] ? early_idt_handler+0x0/0x71 >> [<ffffffff815a6e2c>] setup_arch+0x410/0x777 >> [<ffffffff8133396b>] ? _spin_lock+0xa/0xc >> [<ffffffff8159fa34>] start_kernel+0x8d/0x3aa >> [<ffffffff8159f2ba>] x86_64_start_reservations+0xa5/0xa9 >> [<ffffffff8159f3ae>] x86_64_start_kernel+0xcd/0xdc >> Mar 7 15:33:02 localhost kernel: ---[ end trace 4eaa2a86a8e2da22 ]--- >> >> >> Kernel failure message 4: >> WARNING: BIOS bug: CPU MTRRs don't cover all of memory, losing 4800MB >> of RAM. >> ------------[ cut here ]------------ >> WARNING: at arch/x86/kernel/cpu/mtrr/main.c:1557 >> mtrr_trim_uncached_memory+0x2c3/0x2ee() (Not tainted) >> Hardware name: >> Modules linked in: >> Pid: 0, comm: swapper Not tainted 2.6.27.19-170.2.35.fc10.x86_64 #1 >> Mar 7 15:29:08 localhost kernel: Call Trace: >> [<ffffffff81041a52>] warn_on_slowpath+0x80/0xb0 >> [<ffffffff8116e66a>] ? generic_swap+0x0/0x23 >> [<ffffffff815a9fd3>] ? cmp_range+0x0/0xb >> [<ffffffff81331660>] ? printk+0x3c/0x44 >> [<ffffffff815ab54b>] mtrr_trim_uncached_memory+0x2c3/0x2ee >> [<ffffffff81331660>] ? printk+0x3c/0x44 >> [<ffffffff8159f140>] ? early_idt_handler+0x0/0x71 >> [<ffffffff815a6e2c>] setup_arch+0x410/0x777 >> [<ffffffff8133396b>] ? _spin_lock+0xa/0xc >> [<ffffffff8159fa34>] start_kernel+0x8d/0x3aa >> [<ffffffff8159f2ba>] x86_64_start_reservations+0xa5/0xa9 >> [<ffffffff8159f3ae>] x86_64_start_kernel+0xcd/0xdc >> Mar 7 15:29:08 localhost kernel: ---[ end trace 4eaa2a86a8e2da22 ]--- >> >> >> Kernel failure message 5: >> WARNING: BIOS bug: CPU MTRRs don't cover all of memory, losing 4800MB >> of RAM. >> ------------[ cut here ]------------ >> WARNING: at arch/x86/kernel/cpu/mtrr/main.c:1555 >> mtrr_trim_uncached_memory+0x2b4/0x2df() (Not tainted) >> Modules linked in: >> Pid: 0, comm: swapper Not tainted 2.6.27.5-117.fc10.x86_64 #1 >> Mar 7 14:39:07 localhost kernel: Call Trace: >> [<ffffffff810418f2>] warn_on_slowpath+0x60/0x90 >> [<ffffffff8116d95a>] ? generic_swap+0x0/0x23 >> [<ffffffff815a7f7f>] ? cmp_range+0x0/0xb >> [<ffffffff8132faf6>] ? printk+0x3c/0x3e >> [<ffffffff815a94e8>] mtrr_trim_uncached_memory+0x2b4/0x2df >> [<ffffffff8132faf6>] ? printk+0x3c/0x3e >> [<ffffffff8159d140>] ? early_idt_handler+0x0/0x72 >> [<ffffffff815a4dd3>] setup_arch+0x3ff/0x76b >> [<ffffffff81331deb>] ? _spin_lock+0xa/0xc >> [<ffffffff8159da34>] start_kernel+0x8d/0x3aa >> [<ffffffff8159d2ba>] x86_64_start_reservations+0xa5/0xa9 >> [<ffffffff8159d3ae>] x86_64_start_kernel+0xcd/0xdc >> Mar 7 14:39:07 localhost kernel: ---[ end trace 4eaa2a86a8e2da22 ]--- >> >> ===== >> >> I have "2.6.27.19-170.2.35.fc10.x86_64" version of kernel with the >> following kernel packages installed, >> >> kernel-devel-2.6.27.19-170.2.35.fc10.x86_64 >> kerneloops-0.12-1.fc10.x86_64 >> kernel-headers-2.6.27.19-170.2.35.fc10.x86_64 >> kernel-firmware-2.6.27.19-170.2.35.fc10.noarch >> kernel-doc-2.6.27.19-170.2.35.fc10.noarch >> kernel-debug-devel-2.6.27.19-170.2.35.fc10.x86_64 >> kernel-debug-2.6.27.19-170.2.35.fc10.x86_64 >> kernel-2.6.27.19-170.2.35.fc10.x86_64 >> >> >> -- >> fedora-test-list mailing list >> fedora-test-list@xxxxxxxxxx >> To unsubscribe: >> https://www.redhat.com/mailman/listinfo/fedora-test-list >> > > -- fedora-test-list mailing list fedora-test-list@xxxxxxxxxx To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-test-list
