Messages in this thread Patch in this message | | | Date | Tue, 29 Apr 2008 17:38:35 -0700 | From | "Yinghai Lu" <> | Subject | Re: [PATCH 1/2] x86: mtrr cleanup for converting continuous to discrete layout v7 |
| |
On Tue, Apr 29, 2008 at 5:06 PM, Gabriel C <nix.or.die@googlemail.com> wrote: > > Gabriel C wrote: > > Yinghai Lu wrote: > >> On Tue, Apr 29, 2008 at 1:25 PM, Gabriel C <nix.or.die@googlemail.com> wrote: > >>> Yinghai Lu wrote: > >>> > On Tue, Apr 29, 2008 at 4:51 AM, Gabriel C <nix.or.die@googlemail.com> wrote: > >>> >> Yinghai Lu wrote: > >>> >> > On Tue, Apr 29, 2008 at 3:30 AM, Yinghai Lu <yhlu.kernel@gmail.com> wrote: > >>> >> >> On Tue, Apr 29, 2008 at 2:47 AM, Gabriel C <nix.or.die@googlemail.com> wrote: > >>> >> >> > Yinghai Lu wrote: > >>> >> >> > > some BIOS like to use continus MTRR layout, and may X driver can not add > >>> >> >> > > WB entries for graphical cards when 4g or more RAM installed. > >>> >> >> > > > >>> >> >> > > the patch will change MTRR to discrete. > >>> >> >> > > > >>> >> >> > > mtrr_chunk_size= could be used to have smaller continuous block to hold holes. > >>> >> >> > > default is 256m, could be set according to size of graphics card memory. > >>> >> >> > > > >>> >> >> > > v2: fix -1 for UC checking > >>> >> >> > > v3: default to disable, and need use enable_mtrr_cleanup to enable this feature > >>> >> >> > > skip the var state change warning. > >>> >> >> > > remove next_basek in range_to_mtrr() > >>> >> >> > > v4: correct warning mask. > >>> >> >> > > v5: CONFIG_MTRR_SANITIZER > >>> >> >> > > v6: fix 1g, 2g, 512 aligment with extra hole > >>> >> >> > > v7: gran_sizek to prevent running out of MTRRs. > >>> >> >> > > > >>> >> >> > > >>> >> >> > With this version ( and patch http://lkml.org/lkml/2008/4/29/97 ) applyed on latest linus git tree > >>> >> >> > the box OOPS'es early. > >>> >> >> > > >>> >> >> > Sorry I don't have time right now to write down the part of the OOPS I can see on monitor , I can try to find > >>> >> >> > some time later. > >>> >> >> > > >>> >> >> > In any way OOPS'es on __free_one_page+0x191/0x21e > >>> >> >> > >>> >> >> thanks. found one problem with hole_basek ... > >>> >> >> > >>> >> >> will send you v8, and hope it will be last version. > >>> >> > > >>> >> > please try v8, it should get rid of the 8m entry. it need patch > >>> >> > http://lkml.org/lkml/2008/4/29/97 too. > >>> >> > >>> >> Box does boot with v8 but now I get that warning you fixed in v2 again =): > >>> >> > >>> >> .... > >>> >> [ 0.000000] Linux version 2.6.25-06058-ga01e035-dirty (crazy@thor) (gcc version 4.3.0 (Frugalware Linux) ) #805 SMP PREEMPT Tue Apr 29 13:04:49 CEST 2008 > >>> >> [ 0.000000] Command line: root=/dev/sdb1 ro debug vga=0x317 > >>> >> [ 0.000000] BIOS-provided physical RAM map: > >>> >> [ 0.000000] BIOS-e820: 0000000000000000 - 000000000009cc00 (usable) > >>> >> [ 0.000000] BIOS-e820: 000000000009cc00 - 00000000000a0000 (reserved) > >>> >> [ 0.000000] BIOS-e820: 00000000000e4000 - 0000000000100000 (reserved) > >>> >> [ 0.000000] BIOS-e820: 0000000000100000 - 00000000cf550000 (usable) > >>> >> [ 0.000000] BIOS-e820: 00000000cf550000 - 00000000cf55e000 (ACPI data) > >>> >> [ 0.000000] BIOS-e820: 00000000cf55e000 - 00000000cf5e0000 (ACPI NVS) > >>> >> [ 0.000000] BIOS-e820: 00000000cf5e0000 - 00000000cf600000 (reserved) > >>> >> [ 0.000000] BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved) > >>> >> [ 0.000000] BIOS-e820: 00000000ffc00000 - 0000000100000000 (reserved) > >>> >> [ 0.000000] BIOS-e820: 0000000100000000 - 000000012c000000 (usable) > >>> >> [ 0.000000] Entering add_active_range(0, 0, 156) 0 entries of 256 used > >>> >> [ 0.000000] Entering add_active_range(0, 256, 849232) 1 entries of 256 used > >>> >> [ 0.000000] Entering add_active_range(0, 1048576, 1228800) 2 entries of 256 used > >>> >> [ 0.000000] max_pfn_mapped = 1228800 > >>> >> [ 0.000000] x86 PAT enabled: cpu 0, old 0x7040600070406, new 0x7010600070106 > >>> >> [ 0.000000] After WB checking > >>> >> [ 0.000000] MTRR MAP PFN: 0000000000000000 - 000000000012c000 > >>> >> [ 0.000000] After UC checking > >>> >> [ 0.000000] MTRR MAP PFN: 0000000000000000 - 00000000000cf600 > >>> >> [ 0.000000] MTRR MAP PFN: 0000000000100000 - 000000000012c000 > >>> >> [ 0.000000] MTRR MAP PFN: 00000000000cf800 - 00000000000d0000 > >>> >> [ 0.000000] After sorting > >>> >> [ 0.000000] MTRR MAP PFN: 0000000000000000 - 00000000000cf600 > >>> >> [ 0.000000] MTRR MAP PFN: 00000000000cf800 - 00000000000d0000 > >>> >> [ 0.000000] MTRR MAP PFN: 0000000000100000 - 000000000012c000 > >>> >> [ 0.000000] range0: 0000000000000000 - 00000000c0000000 > >>> >> [ 0.000000] Setting variable MTRR 0, base: 0MB, range: 2048MB, type WB > >>> >> [ 0.000000] Setting variable MTRR 1, base: 2048MB, range: 1024MB, type WB > >>> >> [ 0.000000] range: 00000000c0000000 - 00000000d0000000 > >>> >> [ 0.000000] Setting variable MTRR 2, base: 3072MB, range: 256MB, type WB > >>> >> [ 0.000000] hole: 00000000cc000000 - 00000000d0000000 > >>> >> [ 0.000000] Setting variable MTRR 3, base: 3264MB, range: 64MB, type UC > >>> >> [ 0.000000] rangeX: 00000000d0000000 - 00000000d0000000 > >>> >> [ 0.000000] range0: 0000000100000000 - 0000000120000000 > >>> >> [ 0.000000] Setting variable MTRR 4, base: 4096MB, range: 512MB, type WB > >>> >> [ 0.000000] range: 0000000120000000 - 0000000130000000 > >>> >> [ 0.000000] Setting variable MTRR 5, base: 4608MB, range: 256MB, type WB > >>> >> [ 0.000000] hole: 000000012c000000 - 0000000130000000 > >>> >> [ 0.000000] Setting variable MTRR 6, base: 4800MB, range: 64MB, type UC > >>> >> [ 0.000000] DONE variable MTRRs > >>> >> [ 0.000000] x86 PAT enabled: cpu 0, old 0x7010600070106, new 0x7010600070106 > >>> >> [ 0.000000] After WB checking > >>> >> [ 0.000000] MTRR MAP PFN: 0000000000000000 - 00000000000d0000 > >>> >> [ 0.000000] MTRR MAP PFN: 0000000000100000 - 0000000000130000 > >>> >> [ 0.000000] After UC checking > >>> >> [ 0.000000] MTRR MAP PFN: 0000000000000000 - 00000000000cc000 > >>> >> [ 0.000000] MTRR MAP PFN: 0000000000100000 - 000000000012c000 > >>> >> [ 0.000000] After sorting > >>> >> [ 0.000000] MTRR MAP PFN: 0000000000000000 - 00000000000cc000 > >>> >> [ 0.000000] MTRR MAP PFN: 0000000000100000 - 000000000012c000 > >>> >> [ 0.000000] WARNING: BIOS bug: CPU MTRRs don't cover all of memory, losing 757MB of RAM. > >>> > > >>> > so > >>> >> [ 0.000000] MTRR MAP PFN: 0000000000000000 - 00000000000cf600 > >>> >> [ 0.000000] MTRR MAP PFN: 00000000000cf800 - 00000000000d0000 > >>> >> [ 0.000000] MTRR MAP PFN: 0000000000100000 - 000000000012c000 > >>> > ===> > >>> >> [ 0.000000] MTRR MAP PFN: 0000000000000000 - 00000000000cc000 > >>> >> [ 0.000000] MTRR MAP PFN: 0000000000100000 - 000000000012c000 > >>> > > >>> > please try > >>> > >>> Now I have 2 warnings > >>> > >>> > >>> > mtrr_chunk_size=512m mtrr_gran_size=128m > >>> > >>> ... > >>> > >>> [ 0.000000] Command line: root=/dev/sdb1 ro debug vga=0x317 mtrr_chunk_size=512m mtrr_gran_size=128m 3 > >>> > >>> > >>> [ 0.000000] BIOS-provided physical RAM map: > >>> [ 0.000000] BIOS-e820: 0000000000000000 - 000000000009cc00 (usable) > >>> [ 0.000000] BIOS-e820: 000000000009cc00 - 00000000000a0000 (reserved) > >>> [ 0.000000] BIOS-e820: 00000000000e4000 - 0000000000100000 (reserved) > >>> [ 0.000000] BIOS-e820: 0000000000100000 - 00000000cf550000 (usable) > >>> [ 0.000000] BIOS-e820: 00000000cf550000 - 00000000cf55e000 (ACPI data) > >>> [ 0.000000] BIOS-e820: 00000000cf55e000 - 00000000cf5e0000 (ACPI NVS) > >>> [ 0.000000] BIOS-e820: 00000000cf5e0000 - 00000000cf600000 (reserved) > >>> [ 0.000000] BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved) > >>> [ 0.000000] BIOS-e820: 00000000ffc00000 - 0000000100000000 (reserved) > >>> [ 0.000000] BIOS-e820: 0000000100000000 - 000000012c000000 (usable) > >>> [ 0.000000] Entering add_active_range(0, 0, 156) 0 entries of 256 used > >>> [ 0.000000] Entering add_active_range(0, 256, 849232) 1 entries of 256 used > >>> [ 0.000000] Entering add_active_range(0, 1048576, 1228800) 2 entries of 256 used > >>> [ 0.000000] max_pfn_mapped = 1228800 > >>> [ 0.000000] x86 PAT enabled: cpu 0, old 0x7040600070406, new 0x7010600070106 > >>> [ 0.000000] After WB checking > >>> [ 0.000000] MTRR MAP PFN: 0000000000000000 - 000000000012c000 > >>> [ 0.000000] After UC checking > >>> [ 0.000000] MTRR MAP PFN: 0000000000000000 - 00000000000cf600 > >>> [ 0.000000] MTRR MAP PFN: 0000000000100000 - 000000000012c000 > >>> [ 0.000000] MTRR MAP PFN: 00000000000cf800 - 00000000000d0000 > >>> [ 0.000000] After sorting > >>> [ 0.000000] MTRR MAP PFN: 0000000000000000 - 00000000000cf600 > >>> [ 0.000000] MTRR MAP PFN: 00000000000cf800 - 00000000000d0000 > >>> [ 0.000000] MTRR MAP PFN: 0000000000100000 - 000000000012c000 > >>> [ 0.000000] range0: 0000000000000000 - 00000000c0000000 > >>> [ 0.000000] Setting variable MTRR 0, base: 0MB, range: 2048MB, type WB > >>> [ 0.000000] Setting variable MTRR 1, base: 2048MB, range: 1024MB, type WB > >>> [ 0.000000] range: 00000000c0000000 - 00000000c8000000 > >>> [ 0.000000] Setting variable MTRR 2, base: 3072MB, range: 128MB, type WB > >>> > >>> [ 0.000000] rangeX: 00000000d0000000 - 00000000d0000000 > >>> [ 0.000000] range0: 0000000100000000 - 0000000120000000 > >>> [ 0.000000] Setting variable MTRR 3, base: 4096MB, range: 512MB, type WB > >>> [ 0.000000] range: 0000000120000000 - 0000000128000000 > >>> [ 0.000000] Setting variable MTRR 4, base: 4608MB, range: 128MB, type WB > >>> > >>> [ 0.000000] DONE variable MTRRs > >>> [ 0.000000] x86 PAT enabled: cpu 0, old 0x7010600070106, new 0x7010600070106 > >>> [ 0.000000] After WB checking > >>> [ 0.000000] MTRR MAP PFN: 0000000000000000 - 00000000000c8000 > >>> [ 0.000000] MTRR MAP PFN: 0000000000100000 - 0000000000128000 > >>> > >>> [ 0.000000] After UC checking > >>> [ 0.000000] MTRR MAP PFN: 0000000000000000 - 00000000000c8000 > >>> [ 0.000000] MTRR MAP PFN: 0000000000100000 - 0000000000128000 > >>> [ 0.000000] After sorting > >>> [ 0.000000] MTRR MAP PFN: 0000000000000000 - 00000000000c8000 > >>> [ 0.000000] MTRR MAP PFN: 0000000000100000 - 0000000000128000 > >>> [ 0.000000] WARNING: BIOS bug: CPU MTRRs don't cover all of memory, losing 64MB of RAM. > >>> [ 0.000000] ------------[ cut here ]------------ > >>> [ 0.000000] WARNING: at arch/x86/kernel/cpu/mtrr/main.c:1206 mtrr_trim_uncached_memory+0x25b/0x35a() > >>> > >>> [ 0.000000] Modules linked in: > >>> [ 0.000000] Pid: 0, comm: swapper Not tainted 2.6.25-06058-ga01e035-dirty #805 > >>> [ 0.000000] > >>> [ 0.000000] Call Trace: > >>> [ 0.000000] [<ffffffff8022d661>] warn_on_slowpath+0x51/0x78 > >>> [ 0.000000] [<ffffffff8067f0dc>] x86_get_mtrr_mem_range+0x241/0x25c > >>> [ 0.000000] [<ffffffff8067d93e>] update_memory_range+0x95/0xb7 > >>> [ 0.000000] [<ffffffff8067fa51>] mtrr_trim_uncached_memory+0x25b/0x35a > >>> > >>> [ 0.000000] [<ffffffff8067ca43>] setup_arch+0x280/0x4a2 > >>> [ 0.000000] [<ffffffff80676aa6>] start_kernel+0x6e/0x308 > >>> [ 0.000000] [<ffffffff80676432>] x86_64_start_kernel+0x241/0x24a > >>> [ 0.000000] > >>> [ 0.000000] ---[ end trace ca143223eefdc828 ]--- > >>> [ 0.000000] update e820 for mtrr -- end_pfn > >>> [ 0.000000] modified physical RAM map: > >>> [ 0.000000] modified: 0000000000000000 - 000000000009cc00 (usable) > >>> [ 0.000000] modified: 000000000009cc00 - 00000000000a0000 (reserved) > >>> [ 0.000000] modified: 00000000000e4000 - 0000000000100000 (reserved) > >>> [ 0.000000] modified: 0000000000100000 - 00000000cf550000 (usable) > >>> [ 0.000000] modified: 00000000cf550000 - 00000000cf55e000 (ACPI data) > >>> [ 0.000000] modified: 00000000cf55e000 - 00000000cf5e0000 (ACPI NVS) > >>> [ 0.000000] modified: 00000000cf5e0000 - 00000000cf600000 (reserved) > >>> [ 0.000000] modified: 00000000fee00000 - 00000000fee01000 (reserved) > >>> [ 0.000000] modified: 00000000ffc00000 - 0000000100000000 (reserved) > >>> [ 0.000000] modified: 0000000100000000 - 0000000128000000 (usable) > >>> [ 0.000000] modified: 0000000128000000 - 000000012c000000 (reserved) > >>> > >>> [ 0.000000] WARNING: BIOS bug: CPU MTRRs don't cover all of memory, losing 757MB of RAM. > >>> > >>> [ 0.000000] ------------[ cut here ]------------ > >>> [ 0.000000] WARNING: at arch/x86/kernel/cpu/mtrr/main.c:1227 mtrr_trim_uncached_memory+0x30c/0x35a() > >>> [ 0.000000] Modules linked in: > >>> [ 0.000000] Pid: 0, comm: swapper Not tainted 2.6.25-06058-ga01e035-dirty #805 > >>> [ 0.000000] > >>> [ 0.000000] Call Trace: > >>> [ 0.000000] [<ffffffff8022d661>] warn_on_slowpath+0x51/0x78 > >>> [ 0.000000] [<ffffffff8067f0dc>] x86_get_mtrr_mem_range+0x241/0x25c > >>> [ 0.000000] [<ffffffff8067d93e>] update_memory_range+0x95/0xb7 > >>> [ 0.000000] [<ffffffff8067fb02>] mtrr_trim_uncached_memory+0x30c/0x35a > >>> [ 0.000000] [<ffffffff8067ca43>] setup_arch+0x280/0x4a2 > >>> [ 0.000000] [<ffffffff80676aa6>] start_kernel+0x6e/0x308 > >>> [ 0.000000] [<ffffffff80676432>] x86_64_start_kernel+0x241/0x24a > >>> [ 0.000000] > >>> [ 0.000000] ---[ end trace ca143223eefdc828 ]--- > >>> [ 0.000000] update e820 for mtrr -- holes > >>> [ 0.000000] modified physical RAM map: > >>> [ 0.000000] modified: 0000000000000000 - 000000000009cc00 (usable) > >>> [ 0.000000] modified: 000000000009cc00 - 00000000000a0000 (reserved) > >>> [ 0.000000] modified: 00000000000e4000 - 0000000000100000 (reserved) > >>> [ 0.000000] modified: 0000000000100000 - 00000000c8000000 (usable) > >>> [ 0.000000] modified: 00000000c8000000 - 00000000cf550000 (reserved) > >>> [ 0.000000] modified: 00000000cf550000 - 00000000cf55e000 (ACPI data) > >>> [ 0.000000] modified: 00000000cf55e000 - 00000000cf5e0000 (ACPI NVS) > >>> [ 0.000000] modified: 00000000cf5e0000 - 00000000cf600000 (reserved) > >>> [ 0.000000] modified: 00000000fee00000 - 00000000fee01000 (reserved) > >>> [ 0.000000] modified: 00000000ffc00000 - 000000012c000000 (reserved) > >>> > >>> [ 0.000000] Entering add_active_range(0, 0, 156) 3 entries of 256 used > >>> [ 0.000000] Entering add_active_range(0, 256, 819200) 3 entries of 256 used > >> please try attached trim_holes_fix.patch..., it will fix the trim hole problem. > > > > Tested but warning is still there. I try to boot with mtrr_chunk_size / mtrr_gran_size and see what I get. > > > > ... > > > > [ 0.000000] Linux version 2.6.25-06589-gc65a350-dirty (crazy@thor) (gcc version 4.3.0 (Frugalware Linux) ) #808 SMP PREEMPT Wed Apr 30 01:37:38 CEST 2008 > > [ 0.000000] Command line: root=/dev/sdb1 ro debug vga=0x317 > > [ 0.000000] BIOS-provided physical RAM map: > > [ 0.000000] BIOS-e820: 0000000000000000 - 000000000009cc00 (usable) > > [ 0.000000] BIOS-e820: 000000000009cc00 - 00000000000a0000 (reserved) > > [ 0.000000] BIOS-e820: 00000000000e4000 - 0000000000100000 (reserved) > > [ 0.000000] BIOS-e820: 0000000000100000 - 00000000cf550000 (usable) > > [ 0.000000] BIOS-e820: 00000000cf550000 - 00000000cf55e000 (ACPI data) > > [ 0.000000] BIOS-e820: 00000000cf55e000 - 00000000cf5e0000 (ACPI NVS) > > [ 0.000000] BIOS-e820: 00000000cf5e0000 - 00000000cf600000 (reserved) > > [ 0.000000] BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved) > > [ 0.000000] BIOS-e820: 00000000ffc00000 - 0000000100000000 (reserved) > > [ 0.000000] BIOS-e820: 0000000100000000 - 000000012c000000 (usable) > > [ 0.000000] Entering add_active_range(0, 0, 156) 0 entries of 256 used > > [ 0.000000] Entering add_active_range(0, 256, 849232) 1 entries of 256 used > > [ 0.000000] Entering add_active_range(0, 1048576, 1228800) 2 entries of 256 used > > [ 0.000000] max_pfn_mapped = 1228800 > > [ 0.000000] x86 PAT enabled: cpu 0, old 0x7040600070406, new 0x7010600070106 > > [ 0.000000] After WB checking > > [ 0.000000] MTRR MAP PFN: 0000000000000000 - 000000000012c000 > > [ 0.000000] After UC checking > > [ 0.000000] MTRR MAP PFN: 0000000000000000 - 00000000000cf600 > > [ 0.000000] MTRR MAP PFN: 0000000000100000 - 000000000012c000 > > [ 0.000000] MTRR MAP PFN: 00000000000cf800 - 00000000000d0000 > > [ 0.000000] After sorting > > [ 0.000000] MTRR MAP PFN: 0000000000000000 - 00000000000cf600 > > [ 0.000000] MTRR MAP PFN: 00000000000cf800 - 00000000000d0000 > > [ 0.000000] MTRR MAP PFN: 0000000000100000 - 000000000012c000 > > [ 0.000000] range0: 0000000000000000 - 00000000c0000000 > > [ 0.000000] Setting variable MTRR 0, base: 0MB, range: 2048MB, type WB > > [ 0.000000] Setting variable MTRR 1, base: 2048MB, range: 1024MB, type WB > > [ 0.000000] range: 00000000c0000000 - 00000000d0000000 > > [ 0.000000] Setting variable MTRR 2, base: 3072MB, range: 256MB, type WB > > [ 0.000000] hole: 00000000cc000000 - 00000000d0000000 > > [ 0.000000] Setting variable MTRR 3, base: 3264MB, range: 64MB, type UC > > [ 0.000000] rangeX: 00000000d0000000 - 00000000d0000000 > > [ 0.000000] range0: 0000000100000000 - 0000000120000000 > > [ 0.000000] Setting variable MTRR 4, base: 4096MB, range: 512MB, type WB > > [ 0.000000] range: 0000000120000000 - 0000000130000000 > > [ 0.000000] Setting variable MTRR 5, base: 4608MB, range: 256MB, type WB > > [ 0.000000] hole: 000000012c000000 - 0000000130000000 > > [ 0.000000] Setting variable MTRR 6, base: 4800MB, range: 64MB, type UC > > [ 0.000000] DONE variable MTRRs > > [ 0.000000] x86 PAT enabled: cpu 0, old 0x7010600070106, new 0x7010600070106 > > [ 0.000000] After WB checking > > [ 0.000000] MTRR MAP PFN: 0000000000000000 - 00000000000d0000 > > [ 0.000000] MTRR MAP PFN: 0000000000100000 - 0000000000130000 > > [ 0.000000] After UC checking > > [ 0.000000] MTRR MAP PFN: 0000000000000000 - 00000000000cc000 > > [ 0.000000] MTRR MAP PFN: 0000000000100000 - 000000000012c000 > > [ 0.000000] After sorting > > [ 0.000000] MTRR MAP PFN: 0000000000000000 - 00000000000cc000 > > [ 0.000000] MTRR MAP PFN: 0000000000100000 - 000000000012c000 > > [ 0.000000] WARNING: BIOS bug: CPU MTRRs don't cover all of memory, losing 757MB of RAM. > > [ 0.000000] ------------[ cut here ]------------ > > [ 0.000000] WARNING: at arch/x86/kernel/cpu/mtrr/main.c:1227 mtrr_trim_uncached_memory+0x313/0x361() > > [ 0.000000] Modules linked in: > > [ 0.000000] Pid: 0, comm: swapper Not tainted 2.6.25-06589-gc65a350-dirty #808 > > [ 0.000000] > > [ 0.000000] Call Trace: > > [ 0.000000] [<ffffffff8022d699>] warn_on_slowpath+0x51/0x8c > > [ 0.000000] [<ffffffff806810b4>] x86_get_mtrr_mem_range+0x241/0x25c > > [ 0.000000] [<ffffffff8067f915>] update_memory_range+0x95/0xb7 > > [ 0.000000] [<ffffffff80681ae1>] mtrr_trim_uncached_memory+0x313/0x361 > > [ 0.000000] [<ffffffff8067ea16>] setup_arch+0x280/0x4a6 > > [ 0.000000] [<ffffffff80678a3d>] start_kernel+0x6e/0x30d > > [ 0.000000] [<ffffffff80678432>] x86_64_start_kernel+0x241/0x24a > > [ 0.000000] > > [ 0.000000] ---[ end trace 4eaa2a86a8e2da22 ]--- > > [ 0.000000] update e820 for mtrr -- holes > > [ 0.000000] modified physical RAM map: > > [ 0.000000] modified: 0000000000000000 - 000000000009cc00 (usable) > > [ 0.000000] modified: 000000000009cc00 - 00000000000a0000 (reserved) > > [ 0.000000] modified: 00000000000e4000 - 0000000000100000 (reserved) > > [ 0.000000] modified: 0000000000100000 - 00000000cc000000 (usable) > > [ 0.000000] modified: 00000000cc000000 - 00000000cf550000 (reserved) > > [ 0.000000] modified: 00000000cf550000 - 00000000cf55e000 (ACPI data) > > [ 0.000000] modified: 00000000cf55e000 - 00000000cf5e0000 (ACPI NVS) > > [ 0.000000] modified: 00000000cf5e0000 - 00000000cf600000 (reserved) > > [ 0.000000] modified: 00000000fee00000 - 00000000fee01000 (reserved) > > [ 0.000000] modified: 00000000ffc00000 - 000000012c000000 (reserved) > > [ 0.000000] Entering add_active_range(0, 0, 156) 3 entries of 256 used > > [ 0.000000] Entering add_active_range(0, 256, 835584) 3 entries of 256 used > > [ 0.000000] max_pfn_mapped = 1228800 > > [ 0.000000] init_memory_mapping > > > > ... > > > > with mtrr_chunk_size=256m mtrr_gran_size=128m I'm getting : > > ... > > > > [ 0.000000] BIOS-provided physical RAM map: > [ 0.000000] BIOS-e820: 0000000000000000 - 000000000009cc00 (usable) > [ 0.000000] BIOS-e820: 000000000009cc00 - 00000000000a0000 (reserved) > [ 0.000000] BIOS-e820: 00000000000e4000 - 0000000000100000 (reserved) > [ 0.000000] BIOS-e820: 0000000000100000 - 00000000cf550000 (usable) > [ 0.000000] BIOS-e820: 00000000cf550000 - 00000000cf55e000 (ACPI data) > [ 0.000000] BIOS-e820: 00000000cf55e000 - 00000000cf5e0000 (ACPI NVS) > [ 0.000000] BIOS-e820: 00000000cf5e0000 - 00000000cf600000 (reserved) > [ 0.000000] BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved) > [ 0.000000] BIOS-e820: 00000000ffc00000 - 0000000100000000 (reserved) > [ 0.000000] BIOS-e820: 0000000100000000 - 000000012c000000 (usable) > [ 0.000000] Entering add_active_range(0, 0, 156) 0 entries of 256 used > [ 0.000000] Entering add_active_range(0, 256, 849232) 1 entries of 256 used > [ 0.000000] Entering add_active_range(0, 1048576, 1228800) 2 entries of 256 used > [ 0.000000] max_pfn_mapped = 1228800 > [ 0.000000] x86 PAT enabled: cpu 0, old 0x7040600070406, new 0x7010600070106 > [ 0.000000] After WB checking > [ 0.000000] MTRR MAP PFN: 0000000000000000 - 000000000012c000 > [ 0.000000] After UC checking > [ 0.000000] MTRR MAP PFN: 0000000000000000 - 00000000000cf600 > [ 0.000000] MTRR MAP PFN: 0000000000100000 - 000000000012c000 > [ 0.000000] MTRR MAP PFN: 00000000000cf800 - 00000000000d0000 > [ 0.000000] After sorting > [ 0.000000] MTRR MAP PFN: 0000000000000000 - 00000000000cf600 > [ 0.000000] MTRR MAP PFN: 00000000000cf800 - 00000000000d0000 > [ 0.000000] MTRR MAP PFN: 0000000000100000 - 000000000012c000 > [ 0.000000] range0: 0000000000000000 - 00000000c0000000 > [ 0.000000] Setting variable MTRR 0, base: 0MB, range: 2048MB, type WB > [ 0.000000] Setting variable MTRR 1, base: 2048MB, range: 1024MB, type WB > [ 0.000000] range: 00000000c0000000 - 00000000c8000000 > [ 0.000000] Setting variable MTRR 2, base: 3072MB, range: 128MB, type WB > [ 0.000000] rangeX: 00000000d0000000 - 00000000d0000000 > [ 0.000000] range0: 0000000100000000 - 0000000120000000 > [ 0.000000] Setting variable MTRR 3, base: 4096MB, range: 512MB, type WB > [ 0.000000] range: 0000000120000000 - 0000000128000000 > [ 0.000000] Setting variable MTRR 4, base: 4608MB, range: 128MB, type WB > [ 0.000000] DONE variable MTRRs > [ 0.000000] x86 PAT enabled: cpu 0, old 0x7010600070106, new 0x7010600070106 > [ 0.000000] After WB checking > [ 0.000000] MTRR MAP PFN: 0000000000000000 - 00000000000c8000 > [ 0.000000] MTRR MAP PFN: 0000000000100000 - 0000000000128000 > [ 0.000000] After UC checking > [ 0.000000] MTRR MAP PFN: 0000000000000000 - 00000000000c8000 > [ 0.000000] MTRR MAP PFN: 0000000000100000 - 0000000000128000 > [ 0.000000] After sorting > [ 0.000000] MTRR MAP PFN: 0000000000000000 - 00000000000c8000 > [ 0.000000] MTRR MAP PFN: 0000000000100000 - 0000000000128000 > [ 0.000000] WARNING: BIOS bug: CPU MTRRs don't cover all of memory, losing 64MB of RAM. > [ 0.000000] ------------[ cut here ]------------ > [ 0.000000] WARNING: at arch/x86/kernel/cpu/mtrr/main.c:1206 mtrr_trim_uncached_memory+0x25b/0x361() > > [ 0.000000] Modules linked in: > [ 0.000000] Pid: 0, comm: swapper Not tainted 2.6.25-06589-gc65a350-dirty #808 > [ 0.000000] > [ 0.000000] Call Trace: > [ 0.000000] [<ffffffff8022d699>] warn_on_slowpath+0x51/0x8c > [ 0.000000] [<ffffffff806810b4>] x86_get_mtrr_mem_range+0x241/0x25c > [ 0.000000] [<ffffffff8067f915>] update_memory_range+0x95/0xb7 > [ 0.000000] [<ffffffff80681a29>] mtrr_trim_uncached_memory+0x25b/0x361 > > [ 0.000000] [<ffffffff8067ea16>] setup_arch+0x280/0x4a6 > [ 0.000000] [<ffffffff80678a3d>] start_kernel+0x6e/0x30d > [ 0.000000] [<ffffffff80678432>] x86_64_start_kernel+0x241/0x24a > [ 0.000000] > [ 0.000000] ---[ end trace 4eaa2a86a8e2da22 ]--- > > [ 0.000000] update e820 for mtrr -- end_pfn > [ 0.000000] modified physical RAM map: > [ 0.000000] modified: 0000000000000000 - 000000000009cc00 (usable) > [ 0.000000] modified: 000000000009cc00 - 00000000000a0000 (reserved) > [ 0.000000] modified: 00000000000e4000 - 0000000000100000 (reserved) > [ 0.000000] modified: 0000000000100000 - 00000000cf550000 (usable) > [ 0.000000] modified: 00000000cf550000 - 00000000cf55e000 (ACPI data) > [ 0.000000] modified: 00000000cf55e000 - 00000000cf5e0000 (ACPI NVS) > [ 0.000000] modified: 00000000cf5e0000 - 00000000cf600000 (reserved) > [ 0.000000] modified: 00000000fee00000 - 00000000fee01000 (reserved) > [ 0.000000] modified: 00000000ffc00000 - 0000000100000000 (reserved) > [ 0.000000] modified: 0000000100000000 - 0000000128000000 (usable) > [ 0.000000] modified: 0000000128000000 - 000000012c000000 (reserved) > [ 0.000000] WARNING: BIOS bug: CPU MTRRs don't cover all of memory, losing 757MB of RAM. > [ 0.000000] ------------[ cut here ]------------ > > [ 0.000000] WARNING: at arch/x86/kernel/cpu/mtrr/main.c:1227 mtrr_trim_uncached_memory+0x313/0x361() > [ 0.000000] Modules linked in: > [ 0.000000] Pid: 0, comm: swapper Tainted: G W 2.6.25-06589-gc65a350-dirty #808 > > [ 0.000000] > [ 0.000000] Call Trace: > [ 0.000000] [<ffffffff8022d699>] warn_on_slowpath+0x51/0x8c > [ 0.000000] [<ffffffff806810b4>] x86_get_mtrr_mem_range+0x241/0x25c > [ 0.000000] [<ffffffff8067f915>] update_memory_range+0x95/0xb7 > [ 0.000000] [<ffffffff80681ae1>] mtrr_trim_uncached_memory+0x313/0x361 > [ 0.000000] [<ffffffff8067ea16>] setup_arch+0x280/0x4a6 > [ 0.000000] [<ffffffff80678a3d>] start_kernel+0x6e/0x30d > [ 0.000000] [<ffffffff80678432>] x86_64_start_kernel+0x241/0x24a > [ 0.000000] > [ 0.000000] ---[ end trace 4eaa2a86a8e2da22 ]--- > [ 0.000000] update e820 for mtrr -- holes > [ 0.000000] modified physical RAM map: > [ 0.000000] modified: 0000000000000000 - 000000000009cc00 (usable) > [ 0.000000] modified: 000000000009cc00 - 00000000000a0000 (reserved) > [ 0.000000] modified: 00000000000e4000 - 0000000000100000 (reserved) > > [ 0.000000] modified: 0000000000100000 - 00000000c8000000 (usable) > [ 0.000000] modified: 00000000c8000000 - 00000000cf550000 (reserved) > [ 0.000000] modified: 00000000cf550000 - 00000000cf55e000 (ACPI data) > [ 0.000000] modified: 00000000cf55e000 - 00000000cf5e0000 (ACPI NVS) > [ 0.000000] modified: 00000000cf5e0000 - 00000000cf600000 (reserved) > [ 0.000000] modified: 00000000fee00000 - 00000000fee01000 (reserved) > [ 0.000000] modified: 00000000ffc00000 - 000000012c000000 (reserved) > [ 0.000000] Entering add_active_range(0, 0, 156) 3 entries of 256 used > [ 0.000000] Entering add_active_range(0, 256, 819200) 3 entries of 256 used > please check attached debug patch...
THanks
Yinghai Lu Index: linux-2.6/arch/x86/kernel/cpu/mtrr/main.c =================================================================== --- linux-2.6.orig/arch/x86/kernel/cpu/mtrr/main.c +++ linux-2.6/arch/x86/kernel/cpu/mtrr/main.c @@ -1103,6 +1103,9 @@ static u64 __init real_trim_memory(unsig trim_size = limit_pfn; trim_size <<= PAGE_SHIFT; trim_size -= trim_start; + + printk(KERN_INFO "trimm e820 for MTRR MAP (UC): %016lx - %016lx\n", start_pfn, limit_pfn); + return update_memory_range(trim_start, trim_size, E820_RAM, E820_RESERVED); } @@ -1203,7 +1206,8 @@ int __init mtrr_trim_uncached_memory(uns " all of memory, losing %lluMB of RAM.\n", total_real_trim_size >> 20); - WARN_ON(1); + if (enable_mtrr_cleanup < 1) + WARN_ON(1); printk(KERN_INFO "update e820 for mtrr -- end_pfn\n"); update_e820(); @@ -1214,7 +1218,7 @@ int __init mtrr_trim_uncached_memory(uns if (range[0].start) total_real_trim_size += real_trim_memory(0, range[0].start); - for (i = 0; i < nr_range - 1; i--) { + for (i = 0; i < nr_range - 1; i++) { if (range[i].end + 1 < range[i+1].start) total_real_trim_size += real_trim_memory(range[i].end + 1, range[i+1].start); } @@ -1224,7 +1228,8 @@ int __init mtrr_trim_uncached_memory(uns " all of memory, losing %lluMB of RAM.\n", total_real_trim_size >> 20); - WARN_ON(1); + if (enable_mtrr_cleanup < 1) + WARN_ON(1); printk(KERN_INFO "update e820 for mtrr -- holes\n"); update_e820(); | |