Messages in this thread Patch in this message | | | Date | Thu, 21 Dec 2000 21:23:25 +0100 | From | Andrea Arcangeli <> | Subject | Re: Linux 2.2.19pre2 |
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On Wed, Dec 20, 2000 at 02:28:58PM +0100, Andrea Arcangeli wrote: > I was in the process of fixing this (I also just backported the thinkpad > %edx clobber fix), but if somebody is going to work on this please let > me know so we stay in sync.
Ok this should fix the e820 memory detection, against 2.2.19pre2:
ftp://ftp.us.kernel.org/pub/linux/kernel/people/andrea/patches/v2.2/2.2.19pre2/e820-fix-1
While fixing the code I noticed some bug was inerith from 2.4.x so I forward ported the fixes to 2.4.0-test13-pre3:
ftp://ftp.us.kernel.org/pub/linux/kernel/people/andrea/patches/v2.4/2.4.0-test13-pre3/e820-fix-1
I also include them below so they're handy for Linus:
diff -urN 2.4.0-test13-pre3/arch/i386/kernel/setup.c 2.4.0-test13-pre3-e820/arch/i386/kernel/setup.c --- 2.4.0-test13-pre3/arch/i386/kernel/setup.c Thu Dec 14 22:33:59 2000 +++ 2.4.0-test13-pre3-e820/arch/i386/kernel/setup.c Thu Dec 21 21:12:47 2000 @@ -477,7 +477,7 @@ if (start < 0x100000ULL && end > 0xA0000ULL) { if (start < 0xA0000ULL) add_memory_region(start, 0xA0000ULL-start, type); - if (end < 0x100000ULL) + if (end <= 0x100000ULL) continue; start = 0x100000ULL; size = end - start; @@ -518,7 +518,8 @@ e820.nr_map = 0; add_memory_region(0, LOWMEMSIZE(), E820_RAM); - add_memory_region(HIGH_MEMORY, mem_size << 10, E820_RAM); + add_memory_region(HIGH_MEMORY, (mem_size << 10)-HIGH_MEMORY, + E820_RAM); } printk("BIOS-provided physical RAM map:\n"); print_memory_map(who);
The above patches doesn't include the fix for the thinkpad from Marc Joosen, a backport of such bugfix is separately backported here (because it's orthogonal with the other bugfixes):
ftp://ftp.us.kernel.org/pub/linux/kernel/people/andrea/patches/v2.2/2.2.19pre2/thinkpad-e820-mjoosen-1
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