Description of problem: The kernel is reportedly not using hardware NX protection when available. I would expect that on modern NX enabled processors that the kernel would use hardware NX enforcement over segment limits. Linux version 2.6.17-1.2583.fc6 (brewbuilder.redhat.com) (gcc version 4.1.1 20060817 (Red Hat 4.1.1-18)) #1 SMP Tue Aug 22 00:29:50 EDT 2006 BIOS-provided physical RAM map: BIOS-e820: 0000000000000000 - 000000000009f000 (usable) BIOS-e820: 000000000009f000 - 00000000000a0000 (reserved) BIOS-e820: 00000000000d2000 - 00000000000d4000 (reserved) BIOS-e820: 00000000000dc000 - 0000000000100000 (reserved) BIOS-e820: 0000000000100000 - 000000007f6d0000 (usable) BIOS-e820: 000000007f6d0000 - 000000007f6e3000 (ACPI data) BIOS-e820: 000000007f6e3000 - 000000007f700000 (ACPI NVS) BIOS-e820: 000000007f700000 - 0000000080000000 (reserved) BIOS-e820: 00000000f0000000 - 00000000f4000000 (reserved) BIOS-e820: 00000000fec00000 - 00000000fec10000 (reserved) BIOS-e820: 00000000fed00000 - 00000000fed00400 (reserved) BIOS-e820: 00000000fed14000 - 00000000fed1a000 (reserved) BIOS-e820: 00000000fed1c000 - 00000000fed90000 (reserved) BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved) BIOS-e820: 00000000ff800000 - 0000000100000000 (reserved) 1142MB HIGHMEM available. 895MB LOWMEM available. found SMP MP-table at 000f68c0 Using x86 segment limits to approximate NX protection On node 0 totalpages: 521936 DMA zone: 4096 pages, LIFO batch:0 Normal zone: 225279 pages, LIFO batch:31 HighMem zone: 292561 pages, LIFO batch:31 DMI present. I'm not sure if the kernel is just misreporting or if NX is really not being used. I'm not sure how to tell. It's been this way for a while though. Version-Release number of selected component (if applicable): 2.6.17-1.2583.fc6 How reproducible: Every boot. Steps to Reproduce: 1. boot kernel 2. type dmesg | grep NX Actual results: $ dmesg | grep NX Using x86 segment limits to approximate NX protection Expected results: Kernel should decide to use NX hardware when available and report as such. Additional info:
Reassigning to correct owner, kernel-maint.
You need to install kernel-PAE to use NX