On Wed, Dec 11, 2013 at 06:10:20PM -0700, Toshi Kani wrote:
> > Unfortunately, it did not work. Hit the same panic again.
>
> dmesg output attached.
Ok, thanks.
Let's have a look at the EFI pagetable then. Please apply the attached
patch, make sure CONFIG_X86_PTDUMP is enabled, build, boot and catch
full dmesg again and send it to me.
Thanks.
---
diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h
index 3d1999458709..39022e488c5d 100644
--- a/arch/x86/include/asm/pgtable.h
+++ b/arch/x86/include/asm/pgtable.h
@@ -15,6 +15,7 @@
: (prot))
#ifndef __ASSEMBLY__
+int ptdump_show(struct seq_file *m, void *v);
#include <asm/x86_init.h>
diff --git a/arch/x86/mm/dump_pagetables.c b/arch/x86/mm/dump_pagetables.c
index 0002a3a33081..744dc0dea3c9 100644
--- a/arch/x86/mm/dump_pagetables.c
+++ b/arch/x86/mm/dump_pagetables.c
@@ -99,47 +99,47 @@ static void printk_prot(struct seq_file *m, pgprot_t prot,
int level)
if (!pgprot_val(prot)) {
/* Not present */
- seq_printf(m, " ");
+ pr_cont(" ");
} else {
if (pr & _PAGE_USER)
- seq_printf(m, "USR ");
+ pr_cont("USR ");
else
- seq_printf(m, " ");
+ pr_cont(" ");
if (pr & _PAGE_RW)
- seq_printf(m, "RW ");
+ pr_cont("RW ");
else
- seq_printf(m, "ro ");
+ pr_cont("ro ");
if (pr & _PAGE_PWT)
- seq_printf(m, "PWT ");
+ pr_cont("PWT ");
else
- seq_printf(m, " ");
+ pr_cont(" ");
if (pr & _PAGE_PCD)
- seq_printf(m, "PCD ");
+ pr_cont("PCD ");
else
- seq_printf(m, " ");
+ pr_cont(" ");
/* Bit 9 has a different meaning on level 3 vs 4 */
if (level <= 3) {
if (pr & _PAGE_PSE)
- seq_printf(m, "PSE ");
+ pr_cont("PSE ");
else
- seq_printf(m, " ");
+ pr_cont(" ");
} else {
if (pr & _PAGE_PAT)
- seq_printf(m, "pat ");
+ pr_cont("pat ");
else
- seq_printf(m, " ");
+ pr_cont(" ");
}
if (pr & _PAGE_GLOBAL)
- seq_printf(m, "GLB ");
+ pr_cont("GLB ");
else
- seq_printf(m, " ");
+ pr_cont(" ");
if (pr & _PAGE_NX)
- seq_printf(m, "NX ");
+ pr_cont("NX ");
else
- seq_printf(m, "x ");
+ pr_cont("x ");
}
- seq_printf(m, "%s\n", level_name[level]);
+ pr_cont("%s\n", level_name[level]);
}
/*
@@ -178,7 +178,7 @@ static void note_page(struct seq_file *m, struct pg_state
*st,
st->current_prot = new_prot;
st->level = level;
st->marker = address_markers;
- seq_printf(m, "---[ %s ]---\n", st->marker->name);
+ pr_info("---[ %s ]---\n", st->marker->name);
} else if (prot != cur || level != st->level ||
st->current_address >= st->marker[1].start_address) {
const char *unit = units;
@@ -188,7 +188,7 @@ static void note_page(struct seq_file *m, struct pg_state
*st,
/*
* Now print the actual finished series
*/
- seq_printf(m, "0x%0*lx-0x%0*lx ",
+ pr_info("0x%0*lx-0x%0*lx ",
width, st->start_address,
width, st->current_address);
@@ -197,7 +197,7 @@ static void note_page(struct seq_file *m, struct pg_state
*st,
delta >>= 10;
unit++;
}
- seq_printf(m, "%9lu%c ", delta, *unit);
+ pr_cont("%9lu%c ", delta, *unit);
printk_prot(m, st->current_prot, st->level);
/*
@@ -207,7 +207,7 @@ static void note_page(struct seq_file *m, struct pg_state
*st,
*/
if (st->current_address >= st->marker[1].start_address) {
st->marker++;
- seq_printf(m, "---[ %s ]---\n", st->marker->name);
+ pr_info("---[ %s ]---\n", st->marker->name);
}
st->start_address = st->current_address;
@@ -298,14 +298,11 @@ static void walk_pud_level(struct seq_file *m, struct
pg_state *st, pgd_t addr,
static void walk_pgd_level(struct seq_file *m)
{
-#ifdef CONFIG_X86_64
- pgd_t *start = (pgd_t *) &init_level4_pgt;
-#else
- pgd_t *start = swapper_pg_dir;
-#endif
int i;
struct pg_state st;
+ pgd_t *start = (pgd_t *)__va(real_mode_header->trampoline_pgd);
+
memset(&st, 0, sizeof(st));
for (i = 0; i < PTRS_PER_PGD; i++) {
@@ -329,7 +326,7 @@ static void walk_pgd_level(struct seq_file *m)
note_page(m, &st, __pgprot(0), 0);
}
-static int ptdump_show(struct seq_file *m, void *v)
+int ptdump_show(struct seq_file *m, void *v)
{
walk_pgd_level(m);
return 0;
diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c
index f8ec4dafc74e..f4920191ff8b 100644
--- a/arch/x86/platform/efi/efi.c
+++ b/arch/x86/platform/efi/efi.c
@@ -876,6 +876,11 @@ void __init efi_enter_virtual_mode(void)
efi_setup_page_tables();
efi_sync_low_kernel_mappings();
+ pr_info("desc_size: %lu, count: %d, new_memmap: %p, pa: 0x%lx\n",
+ memmap.desc_size, count, new_memmap, __pa(new_memmap));
+
+ ptdump_show(NULL, NULL);
+
status = phys_efi_set_virtual_address_map(
memmap.desc_size * count,
memmap.desc_size,
diff --git a/arch/x86/platform/efi/efi_64.c b/arch/x86/platform/efi/efi_64.c
index bf286c386d33..0e2ccca2c7ce 100644
--- a/arch/x86/platform/efi/efi_64.c
+++ b/arch/x86/platform/efi/efi_64.c
@@ -160,6 +160,9 @@ static void __init __map_region(efi_memory_desc_t *md, u64
va)
if (kernel_map_pages_in_pgd(pgd, md->phys_addr, va, md->num_pages, pf))
pr_warn("Error mapping PA 0x%llx -> VA 0x%llx!\n",
md->phys_addr, va);
+ else
+ pr_info("PA: 0x%llx -> VA: 0x%llx\n",
+ md->phys_addr, va);
}
void __init efi_map_region(efi_memory_desc_t *md)
--
Regards/Gruss,
Boris.
Sent from a fat crate under my desk. Formatting is fine.
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