diff options
| author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2009-10-14 00:09:05 +0200 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2009-10-14 00:09:05 +0200 |
| commit | 909c941dc0a2f55828855ee58f9022ffdbbd0b79 (patch) | |
| tree | bb5039127cecd976ecc5a0df1800ca028c76e16e | |
| parent | 43ef1428d191e6872ed6f66c976329d5d00741fc (diff) | |
Advertise memory size truncations
i386/i386at/model_dep.c (mem_size_init): Advertise memory size
truncations.
| -rw-r--r-- | i386/i386at/model_dep.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/i386/i386at/model_dep.c b/i386/i386at/model_dep.c index 2426cde..741726d 100644 --- a/i386/i386at/model_dep.c +++ b/i386/i386at/model_dep.c @@ -220,8 +220,10 @@ mem_size_init(void) phys_last_kb = 0x400 + boot_info.mem_upper; /* Avoid 4GiB overflow. */ - if (phys_last_kb < 0x400 || phys_last_kb >= 0x400000) + if (phys_last_kb < 0x400 || phys_last_kb >= 0x400000) { + printf("Truncating memory size to 4GiB\n"); phys_last_kb = 0x400000 - 1; + } phys_last_addr = phys_last_kb * 0x400; avail_remaining @@ -233,8 +235,10 @@ mem_size_init(void) /* Reserve 1/16 of the memory address space for virtual mappings. * Yes, this loses memory. Blame i386. */ - if (phys_last_addr > (VM_MAX_KERNEL_ADDRESS / 16) * 15) - phys_last_addr = (VM_MAX_KERNEL_ADDRESS / 16) * 15; + if (phys_last_addr > (VM_MAX_KERNEL_ADDRESS / 8) * 7) { + phys_last_addr = (VM_MAX_KERNEL_ADDRESS / 8) * 7; + printf("Truncating memory size to %dMiB\n", (phys_last_addr - phys_first_addr) / (1024 * 1024)); + } phys_first_addr = round_page(phys_first_addr); phys_last_addr = trunc_page(phys_last_addr); |