[PATCH 5/6] enable user access

The pmap module is a bit limited on 64 bit paging, so this should be refined when we'll be able to use addresses over 4G. Signed-off-by: Luca Dariz --- i386/intel/pmap.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/i386/intel/pmap.c b/i386/intel/pmap.c index d0bd3b5d..

[PATCH 4/6] fix console setting from cmdline

The leading space prevents it working if console=comX is the only argument, so handle this case separately. Signed-off-by: Luca Dariz --- i386/i386at/com.c | 5 + 1 file changed, 5 insertions(+) diff --git a/i386/i386at/com.c b/i386/i386at/com.c index 3402a025..fb291b87 100644 --- a/i386/i3

[PATCH 2/6] cleanup multiboot

* use _raw_ structs where we refer to the bootloader-provided data * remove unused structures * fix 64 bit boot Signed-off-by: Luca Dariz --- Makefrag.am| 1 - i386/i386at/model_dep.c| 23 +++--- i386/include/mach/i386/multiboot.h | 108 +---

[PATCH 6/6] fix Task State Segment layout for 64 bit

Signed-off-by: Luca Dariz --- i386/i386/i386asm.sym | 4 i386/i386/ktss.c | 8 ++-- i386/i386/pcb.c | 4 i386/i386/tss.h | 24 ++-- 4 files changed, 36 insertions(+), 4 deletions(-) diff --git a/i386/i386/i386asm.sym b/i386/i386/i386asm.sym i

[PATCH 1/6] add support for booting from grub with x86_64

* configure: compile for native x86_64 by default instead of xen * x86_64/Makefrag.am: introduce KERNEL_MAP_BASE to reuse the constant in both code and linker script * x86_64/ldscript: use a .boot section for the very first operations, until we reach long mode. This section is not really alloca

[PATCH 3/6] fix register corruption in irq on qemu

rbx was used to compute the irq index in iunit and ivect arrays, however it should be preserved by pushing it in to the stack. As a solution, we use rax instead, that is preserved across function calls and is not used as a function argument. Signed-off-by: Luca Dariz --- x86_64/interrupt.S | 12

[PATCH v2 0/6] Add initial support for booting x86_64 from grub

Updates from previous submission: * added more description of the changes in the commit message * removed some minor changes needed only when running the kernel from high addreses (>4G), currently it fails to link and it will be handled in another patch * updated pre-processor condition for wri