On Thu, Nov 09, 2017 at 04:21:32PM +0800, Baoquan He wrote: >Hi Chao, > >On 11/01/17 at 07:32pm, Chao Fan wrote: >> Compare the region of memmap entry and immovable_mem, then choose the >> intersection to process_mem_region. >> >> Since the interrelationship between e820 or efi entries and memory >> region in immovable_mem is different: > >Could you paste a bootlog with efi=debug specified in cmdline on the >system you tested? I want to check what kind of intersection between >them. The adding makes code pretty ugly, want to make sure if we have >to do like this. Hi Baoquan,
Here is a machine with efi. The memory information in SRAT from dmesg: [ 0.000000] ACPI: SRAT: Node 0 PXM 0 [mem 0x00000000-0x0009ffff] [ 0.000000] ACPI: SRAT: Node 0 PXM 0 [mem 0x00100000-0x1f3fffff] [ 0.000000] ACPI: SRAT: Node 1 PXM 1 [mem 0x1f400000-0x3e7fffff] [ 0.000000] ACPI: SRAT: Node 2 PXM 2 [mem 0x3e800000-0x5dbfffff] [ 0.000000] ACPI: SRAT: Node 3 PXM 3 [mem 0x5dc00000-0x7cffffff] [ 0.000000] ACPI: SRAT: Node 4 PXM 4 [mem 0x7d000000-0x9c3fffff] [ 0.000000] ACPI: SRAT: Node 5 PXM 5 [mem 0x9c400000-0xbb7fffff] [ 0.000000] ACPI: SRAT: Node 6 PXM 6 [mem 0xbb800000-0xbfffffff] [ 0.000000] ACPI: SRAT: Node 6 PXM 6 [mem 0x100000000-0x11abfffff] [ 0.000000] ACPI: SRAT: Node 7 PXM 7 [mem 0x11ac00000-0x139ffffff] [ 0.000000] ACPI: SRAT: Node 8 PXM 8 [mem 0x13a000000-0x1593fffff] [ 0.000000] ACPI: SRAT: Node 9 PXM 9 [mem 0x159400000-0x1787fffff] There are 10 nodes, and 500M memory in every node. And node0 and node 6 has two parts. Here is the efi mem: [ 0.000000] efi: mem00: [Boot Code | | | | | | | | |WB|WT|WC|UC] range=[0x0000000000000000-0x0000000000000fff] (0MB) [ 0.000000] efi: mem01: [Loader Data | | | | | | | | |WB|WT|WC|UC] range=[0x0000000000001000-0x0000000000001fff] (0MB) [ 0.000000] efi: mem02: [Conventional Memory| | | | | | | | |WB|WT|WC|UC] range=[0x0000000000002000-0x000000000009ffff] (0MB) [ 0.000000] efi: mem03: [Conventional Memory| | | | | | | | |WB|WT|WC|UC] range=[0x0000000000100000-0x0000000000805fff] (7MB) [ 0.000000] efi: mem04: [Boot Data | | | | | | | | |WB|WT|WC|UC] range=[0x0000000000806000-0x0000000000806fff] (0MB) [ 0.000000] efi: mem05: [Conventional Memory| | | | | | | | |WB|WT|WC|UC] range=[0x0000000000807000-0x000000000081ffff] (0MB) [ 0.000000] efi: mem06: [Boot Data | | | | | | | | |WB|WT|WC|UC] range=[0x0000000000820000-0x00000000012fffff] (10MB) [ 0.000000] efi: mem07: [Conventional Memory| | | | | | | | |WB|WT|WC|UC] range=[0x0000000001300000-0x0000000001ffffff] (13MB) [ 0.000000] efi: mem08: [Loader Data | | | | | | | | |WB|WT|WC|UC] range=[0x0000000002000000-0x00000000036e3fff] (22MB) (From mem00 to mem08, belongs to node0) [ 0.000000] efi: mem09: [Conventional Memory| | | | | | | | |WB|WT|WC|UC] range=[0x00000000036e4000-0x000000003d626fff] (927MB) (mem09 has part of node0 and part of node1, but not the whole of node0 and node1) [ 0.000000] efi: mem10: [Loader Data | | | | | | | | |WB|WT|WC|UC] range=[0x000000003d627000-0x000000003fffffff] (41MB) (part of node1 and part of node2) [ 0.000000] efi: mem11: [Conventional Memory| | | | | | | | |WB|WT|WC|UC] range=[0x0000000040000000-0x000000008c92dfff] (1225MB) [ 0.000000] efi: mem12: [Loader Data | | | | | | | | |WB|WT|WC|UC] range=[0x000000008c92e000-0x00000000bbfbdfff] (758MB) [ 0.000000] efi: mem13: [Boot Data | | | | | | | | |WB|WT|WC|UC] range=[0x00000000bbfbe000-0x00000000bbfddfff] (0MB) [ 0.000000] efi: mem14: [Conventional Memory| | | | | | | | |WB|WT|WC|UC] range=[0x00000000bbfde000-0x00000000be350fff] (35MB) [ 0.000000] efi: mem15: [Loader Data | | | | | | | | |WB|WT|WC|UC] range=[0x00000000be351000-0x00000000be579fff] (2MB) [ 0.000000] efi: mem16: [Loader Code | | | | | | | | |WB|WT|WC|UC] range=[0x00000000be57a000-0x00000000be6a0fff] (1MB) [ 0.000000] efi: mem17: [Boot Data | | | | | | | | |WB|WT|WC|UC] range=[0x00000000be6a1000-0x00000000beb21fff] (4MB) [ 0.000000] efi: mem18: [Boot Code | | | | | | | | |WB|WT|WC|UC] range=[0x00000000beb22000-0x00000000bed95fff] (2MB) [ 0.000000] efi: mem19: [Runtime Data |RUN| | | | | | | |WB|WT|WC|UC] range=[0x00000000bed96000-0x00000000bed9afff] (0MB) [ 0.000000] efi: mem20: [Runtime Code |RUN| | | | | | | |WB|WT|WC|UC] range=[0x00000000bed9b000-0x00000000beda1fff] (0MB) [ 0.000000] efi: mem21: [Runtime Data |RUN| | | | | | | |WB|WT|WC|UC] range=[0x00000000beda2000-0x00000000beda6fff] (0MB) [ 0.000000] efi: mem22: [Runtime Code |RUN| | | | | | | |WB|WT|WC|UC] range=[0x00000000beda7000-0x00000000bedacfff] (0MB) [ 0.000000] efi: mem23: [Runtime Data |RUN| | | | | | | |WB|WT|WC|UC] range=[0x00000000bedad000-0x00000000bedb1fff] (0MB) [ 0.000000] efi: mem24: [Runtime Code |RUN| | | | | | | |WB|WT|WC|UC] range=[0x00000000bedb2000-0x00000000bedbafff] (0MB) [ 0.000000] efi: mem25: [Runtime Data |RUN| | | | | | | |WB|WT|WC|UC] range=[0x00000000bedbb000-0x00000000bedbffff] (0MB) [ 0.000000] efi: mem26: [Runtime Code |RUN| | | | | | | |WB|WT|WC|UC] range=[0x00000000bedc0000-0x00000000bedc6fff] (0MB) [ 0.000000] efi: mem27: [Runtime Data |RUN| | | | | | | |WB|WT|WC|UC] range=[0x00000000bedc7000-0x00000000bede6fff] (0MB) [ 0.000000] efi: mem28: [Conventional Memory| | | | | | | | |WB|WT|WC|UC] range=[0x00000000bede7000-0x00000000bf07efff] (2MB) [ 0.000000] efi: mem29: [Boot Data | | | | | | | | |WB|WT|WC|UC] range=[0x00000000bf07f000-0x00000000bf3c3fff] (3MB) [ 0.000000] efi: mem30: [Conventional Memory| | | | | | | | |WB|WT|WC|UC] range=[0x00000000bf3c4000-0x00000000bf3cdfff] (0MB) [ 0.000000] efi: mem31: [Boot Data | | | | | | | | |WB|WT|WC|UC] range=[0x00000000bf3ce000-0x00000000bfce6fff] (9MB) [ 0.000000] efi: mem32: [Conventional Memory| | | | | | | | |WB|WT|WC|UC] range=[0x00000000bfce7000-0x00000000bfce8fff] (0MB) [ 0.000000] efi: mem33: [Boot Code | | | | | | | | |WB|WT|WC|UC] range=[0x00000000bfce9000-0x00000000bfe66fff] (1MB) [ 0.000000] efi: mem34: [Runtime Code |RUN| | | | | | | |WB|WT|WC|UC] range=[0x00000000bfe67000-0x00000000bfe96fff] (0MB) [ 0.000000] efi: mem35: [Runtime Data |RUN| | | | | | | |WB|WT|WC|UC] range=[0x00000000bfe97000-0x00000000bfebafff] (0MB) [ 0.000000] efi: mem36: [Reserved | | | | | | | | |WB|WT|WC|UC] range=[0x00000000bfebb000-0x00000000bfebefff] (0MB) [ 0.000000] efi: mem37: [ACPI Reclaim Memory| | | | | | | | |WB|WT|WC|UC] range=[0x00000000bfebf000-0x00000000bfec6fff] (0MB) [ 0.000000] efi: mem38: [ACPI Memory NVS | | | | | | | | |WB|WT|WC|UC] range=[0x00000000bfec7000-0x00000000bfecafff] (0MB) [ 0.000000] efi: mem39: [Boot Data | | | | | | | | |WB|WT|WC|UC] range=[0x00000000bfecb000-0x00000000bffcffff] (1MB) [ 0.000000] efi: mem40: [Runtime Data |RUN| | | | | | | |WB|WT|WC|UC] range=[0x00000000bffd0000-0x00000000bffeffff] (0MB) [ 0.000000] efi: mem41: [Conventional Memory| | | | | | | | |WB|WT|WC|UC] range=[0x00000000bfff0000-0x00000000bfffffff] (0MB) [ 0.000000] efi: mem42: [Runtime Data |RUN| | | | | | | | | | |UC] range=[0x00000000ffe00000-0x00000000ffffffff] (2MB) [ 0.000000] efi: mem43: [Conventional Memory| | | | | | | | |WB|WT|WC|UC] range=[0x0000000100000000-0x00000001787fffff] (1928MB) If the information is not enough, I can add more. Thanks, Chao Fan > >Thanks >Baoquan > >> One memory region in one node may contain several entries of e820 or >> efi sometimes, and one entry of e820 or efi may contain the memory in >> different nodes sometimes. >> It may split one node or one entry to several regions. >> >> Signed-off-by: Chao Fan <fanc.f...@cn.fujitsu.com> >> --- >> arch/x86/boot/compressed/kaslr.c | 60 >> ++++++++++++++++++++++++++++++++++------ >> 1 file changed, 52 insertions(+), 8 deletions(-) >> >> diff --git a/arch/x86/boot/compressed/kaslr.c >> b/arch/x86/boot/compressed/kaslr.c >> index 0a591c0023f1..fcd640fdeaed 100644 >> --- a/arch/x86/boot/compressed/kaslr.c >> +++ b/arch/x86/boot/compressed/kaslr.c >> @@ -634,6 +634,54 @@ static void process_mem_region(struct mem_vector *entry, >> } >> } >> >> +static bool select_immovable_node(struct mem_vector region, >> + unsigned long long minimum, >> + unsigned long long image_size) >> +{ >> + int i; >> + >> + /* If no immovable_mem stored, use region directly */ >> + if (num_immovable_region == 0) { >> + process_mem_region(®ion, minimum, image_size); >> + >> + if (slot_area_index == MAX_SLOT_AREA) { >> + debug_putstr("Aborted memmap scan (slot_areas >> full)!\n"); >> + return 1; >> + } >> + } else { >> + /* >> + * Walk all immovable regions, and filter the intersection >> + * to process_mem_region. >> + */ >> + for (i = 0; i < num_immovable_region; i++) { >> + struct mem_vector entry; >> + unsigned long long start, end, select_end, region_end; >> + >> + region_end = region.start + region.size - 1; >> + start = immovable_mem[i].start; >> + end = start + immovable_mem[i].size - 1; >> + >> + if (region_end < start || region.start > end) >> + continue; >> + >> + /* May split one region to several entries. */ >> + entry.start = start > region.start ? >> + start : region.start; >> + select_end = end > region_end ? region_end : end; >> + >> + entry.size = select_end - entry.start + 1; >> + >> + process_mem_region(&entry, minimum, image_size); >> + >> + if (slot_area_index == MAX_SLOT_AREA) { >> + debug_putstr("Aborted memmap scan (slot_areas >> full)!\n"); >> + return 1; >> + } >> + } >> + } >> + return 0; >> +} >> + >> #ifdef CONFIG_EFI >> /* >> * Returns true if mirror region found (and must have been processed >> @@ -699,11 +747,9 @@ process_efi_entries(unsigned long minimum, unsigned >> long image_size) >> >> region.start = md->phys_addr; >> region.size = md->num_pages << EFI_PAGE_SHIFT; >> - process_mem_region(®ion, minimum, image_size); >> - if (slot_area_index == MAX_SLOT_AREA) { >> - debug_putstr("Aborted EFI scan (slot_areas full)!\n"); >> + >> + if (select_immovable_node(region, minimum, image_size)) >> break; >> - } >> } >> return true; >> } >> @@ -730,11 +776,9 @@ static void process_e820_entries(unsigned long minimum, >> continue; >> region.start = entry->addr; >> region.size = entry->size; >> - process_mem_region(®ion, minimum, image_size); >> - if (slot_area_index == MAX_SLOT_AREA) { >> - debug_putstr("Aborted e820 scan (slot_areas full)!\n"); >> + >> + if (select_immovable_node(region, minimum, image_size)) >> break; >> - } >> } >> } >> >> -- >> 2.13.6 >> >> >> > >