]> git.karo-electronics.de Git - karo-tx-linux.git/log
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14 years agokvm__setup_sregs: fix indentation
Asias He [Tue, 1 Jun 2010 16:41:59 +0000 (20:41 +0400)]
kvm__setup_sregs: fix indentation

Signed-off-by: Asias He <asias.hejun@gmail.com>
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
14 years agoearly_printk: Simplify the code
Cyrill Gorcunov [Sun, 30 May 2010 19:15:28 +0000 (23:15 +0400)]
early_printk: Simplify the code

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
14 years agoearly_printk.c: add rep/outsb support
Asias He [Fri, 28 May 2010 07:48:19 +0000 (15:48 +0800)]
early_printk.c: add rep/outsb support

Signed-off-by: Asias He <asias.hejun@gmail.com>
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
14 years agokvm: The command line storage should not be too short
Cyrill Gorcunov [Sun, 30 May 2010 18:33:27 +0000 (22:33 +0400)]
kvm: The command line storage should not be too short

At moment boot protocol may hold up to 2048 symbols
from command line we should provide the same compatibility
for --params option.

Reported-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
14 years agokvm: Append missing ending space for built-in command line
Cyrill Gorcunov [Sun, 30 May 2010 18:23:55 +0000 (22:23 +0400)]
kvm: Append missing ending space for built-in command line

We have a predefined command line but when an user passes
additional parameters the last predefined argument and
first user's one get sticked together. Fix it by adding
ending space for built-in command line.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
14 years agokvm: Check for required KVM extensions in one place
Cyrill Gorcunov [Sun, 30 May 2010 16:32:13 +0000 (20:32 +0400)]
kvm: Check for required KVM extensions in one place

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
14 years agokvm: kvm__setup_sregs initialize more registers
Asias He [Fri, 28 May 2010 07:48:17 +0000 (15:48 +0800)]
kvm: kvm__setup_sregs initialize more registers

This allow to boot bzImage

Signed-off-by: Asias He <asias.hejun@gmail.com>
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
14 years agokvm: reimplement kvm__setup_sregs
Asias He [Fri, 28 May 2010 07:48:16 +0000 (15:48 +0800)]
kvm: reimplement kvm__setup_sregs

It's better to get sregs which was initialized by kernel and change what
we need precisely. Actually vmx_vcpu_reset does the cpu initialization
before us.

This solves the problem of failing to run on x86-32 host kernel.

Signed-off-by: Asias He <asias.hejun@gmail.com>
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
14 years agokvm__init: the kernel should support irq and pit
Asias He [Fri, 28 May 2010 16:47:50 +0000 (20:47 +0400)]
kvm__init: the kernel should support irq and pit

We rely on kenrnel being fresh enough since we're
not going to support non built-in IRQ routing and
PIT emulation.

Signed-off-by: Asias He <asias.hejun@gmail.com>
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
14 years agokvm: remove unneccessary iotcl parameter
Asias He [Tue, 11 May 2010 14:21:22 +0000 (22:21 +0800)]
kvm: remove unneccessary iotcl parameter

The last parameter of the following is unneccessary:

  ret = ioctl(self->vm_fd, KVM_SET_USER_MEMORY_REGION, &mem, 1);

as seen in linux-2.6.32.12/virt/kvm/kvm_main.c:

case KVM_SET_USER_MEMORY_REGION: {
        struct kvm_userspace_memory_region kvm_userspace_mem;

        r = -EFAULT;
        if (copy_from_user(&kvm_userspace_mem, argp,
                                        sizeof kvm_userspace_mem))
                goto out;

        r = kvm_vm_ioctl_set_memory_region(kvm, &kvm_userspace_mem, 1);
        if (r)
                goto out;
        break;
}

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Use strlcat helper for copying cmdline params
Cyrill Gorcunov [Mon, 10 May 2010 10:18:17 +0000 (14:18 +0400)]
kvm: Use strlcat helper for copying cmdline params

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
14 years agokvm: Use PRIx qualificator for printf
Cyrill Gorcunov [Wed, 28 Apr 2010 18:59:36 +0000 (22:59 +0400)]
kvm: Use PRIx qualificator for printf

In sake of portability better to use PRIx qualificator
for printf flags.

Reported-by: Asias He <asias.hejun@gmail.com>
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
14 years agobios: No new line at EOF nit fix
Asias He [Wed, 28 Apr 2010 18:53:49 +0000 (22:53 +0400)]
bios: No new line at EOF nit fix

Signed-off-by: Asias He <asias.hejun@gmail.com>
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
14 years agokvm: Fix .gitignore patterns
Pekka Enberg [Mon, 26 Apr 2010 15:16:25 +0000 (18:16 +0300)]
kvm: Fix .gitignore patterns

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Print error code on unknown error
Cyrill Gorcunov [Mon, 26 Apr 2010 11:08:00 +0000 (15:08 +0400)]
kvm: Print error code on unknown error

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
14 years agoChange __x86_x__ to CONFIG_X86_X
Cyrill Gorcunov [Mon, 26 Apr 2010 06:55:50 +0000 (10:55 +0400)]
Change __x86_x__ to CONFIG_X86_X

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
14 years agokvm: Flush stdout for early printk
Pekka Enberg [Sat, 24 Apr 2010 06:57:38 +0000 (09:57 +0300)]
kvm: Flush stdout for early printk

Make sure we flush stdout for early printk so that we can see what's really
going on when a kernel gets stuck.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Dump state on SIGQUIT
Pekka Enberg [Sat, 24 Apr 2010 06:54:52 +0000 (09:54 +0300)]
kvm: Dump state on SIGQUIT

This patch adds state dumping to SIGQUIT signal handler to make debugging
infinite loops easier.  If a kernel gets stuck under KVM, you can press Ctrl-4
and then use 'addr2line' to figure out the exact location where it's stuck from
the reported 'rip':

  ^\[    0.000000] Calibrating delay loop... Registers:
   rip: ffffffff816a0c83   rsp: ffffffff81c01eb8 flags: 0000000000000246
   rax: 00000000ffff8ad0   rbx: ffffffff81d541a0   rcx: 00000000ffffffff
   rdx: 00000000ffff8ad0   rsi: 0000000000000046   rdi: 0000000000002000
   rbp: ffffffff81c01f28   r8:  00000000000003fd   r9:  0000000000000000
   r10: 0000000000000000   r11: 000000000000000d   r12: ffffffff81d56d20
   r13: 0000000000000000   r14: ffffffffffffffff   r15: 0000000000013690
   cr0: 000000008005003b   cr2: 0000000000000000   cr3: 0000000001c08000
   cr4: 00000000000006b0   cr8: 0000000000000000
  Segment registers:
   register  selector  base              limit     type  p dpl db s l g avl
   cs        0010      0000000000000000  ffffffff  0b    1 0   0  1 1 1 0
   ss        0000      0000000000000000  ffffffff  00    0 0   0  0 0 0 0
   ds        0000      0000000000000000  ffffffff  00    0 0   0  0 0 0 0
   es        0000      0000000000000000  ffffffff  00    0 0   0  0 0 0 0
   fs        0000      0000000000000000  ffffffff  00    0 0   0  0 0 0 0
   gs        0000      ffff880002000000  ffffffff  00    0 0   0  0 0 0 0
   tr        0040      ffff880002011bc0  00002087  0b    1 0   0  0 0 0 0
   ldt       0000      0000000000000000  ffffffff  00    0 0   0  0 0 0 0
   gdt                 ffff880002004000  0000007f
   idt                 ffffffff81de9000  00000fff
   [ efer: 0000000000000d01  apic base: 0000000000000000  nmi: enabled ]
  Interrupt bitmap:
   0000000000000000 0000000000000000 0000000000000000 0000000000000000
  Code:
  Stack:
  penberg@tiger:~/vm$ addr2line -e vmlinux
  0xffffffff816a0c83
  /home/penberg/linux/init/calibrate.c:149

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Don't touch 64 bit specific MSR registers on 32 bit
Cyrill Gorcunov [Thu, 22 Apr 2010 14:46:31 +0000 (18:46 +0400)]
kvm: Don't touch 64 bit specific MSR registers on 32 bit

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Set more fields in boot protocol
Cyrill Gorcunov [Sat, 17 Apr 2010 11:32:48 +0000 (15:32 +0400)]
kvm: Set more fields in boot protocol

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
14 years agokvm: Command line update must honor ABI
Cyrill Gorcunov [Fri, 16 Apr 2010 17:33:04 +0000 (21:33 +0400)]
kvm: Command line update must honor ABI

This is a part of boot protocol, so that we
must honor it.

Reported-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
14 years agoMakefile: Add cpu specific definition
Cyrill Gorcunov [Wed, 14 Apr 2010 16:22:00 +0000 (20:22 +0400)]
Makefile: Add cpu specific definition

We need to figure out what kind of cpu we're
going to run on for bios code.

Suggested-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
14 years agokvm: Kill the bin2c helper
Cyrill Gorcunov [Tue, 13 Apr 2010 19:48:17 +0000 (23:48 +0400)]
kvm: Kill the bin2c helper

Instead of calling bin2c helper we just include 16-bit pure code with .incbin
and export the symbols we need.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Add more default kernel command line parameters
Cyrill Gorcunov [Sun, 11 Apr 2010 18:21:09 +0000 (22:21 +0400)]
kvm: Add more default kernel command line parameters

We dont support ACPI, APIC, SMP yet, mark it so.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
14 years agoMerge branch 'master' of git://github.com/cyrillos/vm
Pekka Enberg [Sun, 11 Apr 2010 18:07:45 +0000 (21:07 +0300)]
Merge branch 'master' of git://github.com/cyrillos/vm

14 years agokvm: Clean up early serial code
Pekka Enberg [Sun, 11 Apr 2010 18:05:36 +0000 (21:05 +0300)]
kvm: Clean up early serial code

Use similar constants and variable names as in arch/x86/kernel/early_printk.c
in the Linux kernel.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agoioport: Make all PIT channels being dummy
Cyrill Gorcunov [Sun, 11 Apr 2010 17:56:56 +0000 (21:56 +0400)]
ioport: Make all PIT channels being dummy

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
14 years agokvm: Force 'notsc' and 'earlyprintk' kernel parameters
Pekka Enberg [Sun, 11 Apr 2010 17:55:56 +0000 (20:55 +0300)]
kvm: Force 'notsc' and 'earlyprintk' kernel parameters

We don't support TSC calibration properly and we want early printk so force
them as kernel parameters.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Add support for early serial printk
Pekka Enberg [Sun, 11 Apr 2010 17:42:10 +0000 (20:42 +0300)]
kvm: Add support for early serial printk

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Make command line to be placed at predefined address
Cyrill Gorcunov [Sun, 11 Apr 2010 16:09:28 +0000 (20:09 +0400)]
kvm: Make command line to be placed at predefined address

We support only 0x202 boot protocol at moment so that kernel command line is
copied into predefined address.

Reported-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Fix minor formatting glitch in cpuid.c
Pekka Enberg [Sun, 11 Apr 2010 14:08:15 +0000 (17:08 +0300)]
kvm: Fix minor formatting glitch in cpuid.c

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Fix off-by-one bugs in kvm__setup_cpuid()
Pekka Enberg [Sun, 11 Apr 2010 13:35:35 +0000 (16:35 +0300)]
kvm: Fix off-by-one bugs in kvm__setup_cpuid()

The cpuid_highest_func() and cpuid_highest_ext_func() return the highest
possible function number, not the first non-existing function.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Ignore keyboard controller ioports
Pekka Enberg [Sun, 11 Apr 2010 12:29:43 +0000 (15:29 +0300)]
kvm: Ignore keyboard controller ioports

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Ignore PIT ioports
Pekka Enberg [Sun, 11 Apr 2010 12:25:46 +0000 (15:25 +0300)]
kvm: Ignore PIT ioports

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Ignore dummy delay ioport
Pekka Enberg [Sun, 11 Apr 2010 12:24:17 +0000 (15:24 +0300)]
kvm: Ignore dummy delay ioport

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Ignore CRT control ioports
Pekka Enberg [Sun, 11 Apr 2010 12:22:38 +0000 (15:22 +0300)]
kvm: Ignore CRT control ioports

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Ignore CMOS RAM/RTC ioports
Pekka Enberg [Sun, 11 Apr 2010 12:21:09 +0000 (15:21 +0300)]
kvm: Ignore CMOS RAM/RTC ioports

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Ignore PIC accesses
Pekka Enberg [Sun, 11 Apr 2010 12:18:19 +0000 (15:18 +0300)]
kvm: Ignore PIC accesses

Fix up some dummy ioport ops so that we don't stop on PIC setup code in the
kernel.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Ignore MMIO accesses
Pekka Enberg [Sun, 11 Apr 2010 12:15:02 +0000 (15:15 +0300)]
kvm: Ignore MMIO accesses

Lets cheat some more and ignore MMIO accesses altogether.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Ignore PCI config space accesses
Pekka Enberg [Sun, 11 Apr 2010 12:01:02 +0000 (15:01 +0300)]
kvm: Ignore PCI config space accesses

Lets try to cheat a bit and just flat out ignore PCI config space accesses.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Don't crash debug dump if address isn't in guest memory
Pekka Enberg [Sun, 11 Apr 2010 09:45:15 +0000 (12:45 +0300)]
kvm: Don't crash debug dump if address isn't in guest memory

We don't do MMU translation in the hypevisor for guest memory addresses which
causes us to try to dereference invalid pointers.  Work around the problem by
checking that a pointer is in guest memory before dumping the contents.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Set up MAXPHYADDR guest CPUID
Pekka Enberg [Sun, 11 Apr 2010 09:37:54 +0000 (12:37 +0300)]
kvm: Set up MAXPHYADDR guest CPUID

As explained by Avi Kivity, we need to set up MAXPHYADDR for the guest to avoid
a triple fault when the guest tries to enter long mode. This fixes the
KVM_EXIT_SHUTDOWN problem I was seeing on my machine.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Dump page tables at exit
Pekka Enberg [Sun, 11 Apr 2010 06:28:14 +0000 (09:28 +0300)]
kvm: Dump page tables at exit

To make debugging more easy, dump page tables at exit as suggested by Avi
Kivity.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Dump stack on KVM oops
Pekka Enberg [Thu, 8 Apr 2010 18:53:07 +0000 (21:53 +0300)]
kvm: Dump stack on KVM oops

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Show gdt and idt registers
Pekka Enberg [Thu, 8 Apr 2010 18:45:24 +0000 (21:45 +0300)]
kvm: Show gdt and idt registers

As suggested by Avi Kivity, dump 'gdt' and 'idt' registers as well.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Reference to undefined variable
Cyrill Gorcunov [Thu, 8 Apr 2010 17:53:13 +0000 (21:53 +0400)]
kvm: Reference to undefined variable

We may have cmdline_size not initialized before use. Fix it.

Reported-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Add .gitignore for bios build files
Pekka Enberg [Thu, 8 Apr 2010 18:02:34 +0000 (21:02 +0300)]
kvm: Add .gitignore for bios build files

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Setup VCPU MSRs
Pekka Enberg [Thu, 8 Apr 2010 17:44:37 +0000 (20:44 +0300)]
kvm: Setup VCPU MSRs

Use the KVM_SET_MSRS ioctl() to set up model-specific registers (MSRs) to a
known state.  The MSRs are initialized to zero for now because I'm not sure
what are the right values.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Clean up kvm__reset_vcpu() function
Pekka Enberg [Thu, 8 Apr 2010 17:42:32 +0000 (20:42 +0300)]
kvm: Clean up kvm__reset_vcpu() function

This patch splits kvm__reset_vcpu() into three separate helper functions to
make the function more readable.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Add test binaries to .gitignore
Pekka Enberg [Thu, 8 Apr 2010 17:19:41 +0000 (20:19 +0300)]
kvm: Add test binaries to .gitignore

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Clean up Makefile output
Pekka Enberg [Thu, 8 Apr 2010 17:19:12 +0000 (20:19 +0300)]
kvm: Clean up Makefile output

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Update command line related enitites in boot parameters
Cyrill Gorcunov [Fri, 2 Apr 2010 21:46:11 +0000 (01:46 +0400)]
kvm: Update command line related enitites in boot parameters

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
14 years agokvm: Add copying of kernel command line into guest memory
Cyrill Gorcunov [Fri, 2 Apr 2010 21:16:51 +0000 (01:16 +0400)]
kvm: Add copying of kernel command line into guest memory

We will need to modify heap pointer in guest.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
14 years agobios: Add bios stubs generated from assembly files
Cyrill Gorcunov [Thu, 1 Apr 2010 17:23:18 +0000 (21:23 +0400)]
bios: Add bios stubs generated from assembly files

We substitute hardcoded fake bios handlers with ones generated
from assembly sources. This way we may extend them if needed.

In particular new int0x10 handler just write output into video
guest memory so the node machine may read the output anytime
it needs (though, to be fair, the kernel uses int0x10 only once
at bootup procedure if there was an attempt to boot directly
from disk/floppy, any other output is done via video port I/O
which is not implemented yet).

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
14 years agointerrupt: Move bios related constants to kvm/bios.h
Cyrill Gorcunov [Thu, 1 Apr 2010 15:51:46 +0000 (19:51 +0400)]
interrupt: Move bios related constants to kvm/bios.h

This will allow us to share them between assembly code
and C code as well.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
14 years agokvm: Introduce kvm__dump_mem helper
Cyrill Gorcunov [Wed, 31 Mar 2010 19:57:12 +0000 (23:57 +0400)]
kvm: Introduce kvm__dump_mem helper

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
14 years agointerrupt: Add interrupt_table__set helper
Cyrill Gorcunov [Thu, 1 Apr 2010 15:23:21 +0000 (19:23 +0400)]
interrupt: Add interrupt_table__set helper

In case if some particular interrupt entry needs
to be modified we should use interrupt_table__set
helper.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
14 years agobios: Add simple bin2c converter
Cyrill Gorcunov [Wed, 31 Mar 2010 19:45:15 +0000 (23:45 +0400)]
bios: Add simple bin2c converter

We will need it to convert binary data into compilable C code.
It's pretty trivial.

Signed-off-by: Tobias Brox <tobixen@gmail.com>
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
14 years agokvm: Free memory on exit
Pekka Enberg [Thu, 1 Apr 2010 14:45:26 +0000 (17:45 +0300)]
kvm: Free memory on exit

Free memory on exit so that valgrind reports are easier to read.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Fix protected mode code dump
Pekka Enberg [Thu, 1 Apr 2010 14:32:38 +0000 (17:32 +0300)]
kvm: Fix protected mode code dump

This patch fixes protected mode code dump not to take 16-bit segment selector
into account when calculating the guest flat address.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Ignore PIC init during boot
Pekka Enberg [Thu, 1 Apr 2010 14:23:38 +0000 (17:23 +0300)]
kvm: Ignore PIC init during boot

We don't have interrupt injection so we can safely ignore PIC interrupt masking
during bootup.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Ignore math co-processor reset I/O writes
Pekka Enberg [Thu, 1 Apr 2010 14:18:58 +0000 (17:18 +0300)]
kvm: Ignore math co-processor reset I/O writes

The Linux kernel resets math co-processor when entering protected mode.  Ignore
the reset for now so kernel boot doesn't stop there.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Setup guest FPU state
Pekka Enberg [Thu, 1 Apr 2010 13:35:38 +0000 (16:35 +0300)]
kvm: Setup guest FPU state

Use the KVM_SET_FPU ioctl() to set up guest initial FPU state.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Remove unused cpu.c file
Pekka Enberg [Wed, 31 Mar 2010 18:55:49 +0000 (21:55 +0300)]
kvm: Remove unused cpu.c file

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Add simple NMI enable/disable support
Pekka Enberg [Wed, 31 Mar 2010 18:35:27 +0000 (21:35 +0300)]
kvm: Add simple NMI enable/disable support

This patch adds simple NMI I/O port emulation.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Don't abort guest on KVM_EXIT_IO
Pekka Enberg [Wed, 31 Mar 2010 18:11:30 +0000 (21:11 +0300)]
kvm: Don't abort guest on KVM_EXIT_IO

This is a preparational step for emulating IO.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Extract ioport emulation code to its own file
Pekka Enberg [Wed, 31 Mar 2010 18:08:16 +0000 (21:08 +0300)]
kvm: Extract ioport emulation code to its own file

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Extract CPUID code into its own file
Pekka Enberg [Wed, 31 Mar 2010 17:59:54 +0000 (20:59 +0300)]
kvm: Extract CPUID code into its own file

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Enable GCC debugging information
Pekka Enberg [Wed, 31 Mar 2010 17:52:12 +0000 (20:52 +0300)]
kvm: Enable GCC debugging information

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Setup CPUID for the guest
Pekka Enberg [Wed, 31 Mar 2010 16:45:23 +0000 (19:45 +0300)]
kvm: Setup CPUID for the guest

This patch sets up guest CPUID which is based on host CPUID.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Introduce --single-step command line option
Pekka Enberg [Wed, 31 Mar 2010 16:19:23 +0000 (19:19 +0300)]
kvm: Introduce --single-step command line option

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Put fake bios interrupt handlers into known memory area
Cyrill Gorcunov [Tue, 30 Mar 2010 19:26:29 +0000 (23:26 +0400)]
kvm: Put fake bios interrupt handlers into known memory area

Instead of hacking boot protocol header better to place interrupt handlers into
BDA.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Rename ivt_ prefixed entities
Cyrill Gorcunov [Mon, 29 Mar 2010 15:47:31 +0000 (19:47 +0400)]
kvm: Rename ivt_ prefixed entities

Though ivt stands for interrupt vector table it's not that clear, lets use
real_intr_desc for that.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Move util.h to include/kvm directory
Pekka Enberg [Sun, 28 Mar 2010 16:54:24 +0000 (19:54 +0300)]
kvm: Move util.h to include/kvm directory

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Clean up interrupt_table__setup()
Pekka Enberg [Sun, 28 Mar 2010 16:45:08 +0000 (19:45 +0300)]
kvm: Clean up interrupt_table__setup()

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Move interrupt table to struct kvm
Pekka Enberg [Sun, 28 Mar 2010 16:41:48 +0000 (19:41 +0300)]
kvm: Move interrupt table to struct kvm

This patch moves the global interrupt table to struct kvm.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Remove unnecessary includes from interrupt.c
Pekka Enberg [Sun, 28 Mar 2010 16:35:32 +0000 (19:35 +0300)]
kvm: Remove unnecessary includes from interrupt.c

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Clean up kvm/interrupt.h a bit
Pekka Enberg [Sun, 28 Mar 2010 16:34:30 +0000 (19:34 +0300)]
kvm: Clean up kvm/interrupt.h a bit

Add include guards to the header file and remove unnecessary #includes.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Rename interrupt emulation source files
Pekka Enberg [Sun, 28 Mar 2010 16:33:16 +0000 (19:33 +0300)]
kvm: Rename interrupt emulation source files

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Fill up fake IVT
Cyrill Gorcunov [Sun, 28 Mar 2010 15:53:30 +0000 (19:53 +0400)]
kvm: Fill up fake IVT

Fill up fake IVT to point to 2 bytes opcodes of "sti,iret". Since they have to
live somewhere in guest memory we use _pad entry from boot_params space.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Setup fake IVT table
Cyrill Gorcunov [Sun, 28 Mar 2010 15:10:03 +0000 (19:10 +0400)]
kvm: Setup fake IVT table

Setup fake interrupt handlers for real mode, it consists of iret opcode only.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Introduce IVT handling
Cyrill Gorcunov [Sun, 28 Mar 2010 14:45:51 +0000 (18:45 +0400)]
kvm: Introduce IVT handling

Introduce procedures for handling IVT (Interrupt Vector Table) to be used int
real mode bootstrap procedure.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Add --params option
Cyrill Gorcunov [Sun, 28 Mar 2010 10:35:06 +0000 (14:35 +0400)]
kvm: Add --params option

In particular this will keep boot agruments for kernel. The commit technically
prepares ground for real argument pass.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Add --kernel parameter handling
Cyrill Gorcunov [Sun, 28 Mar 2010 10:27:44 +0000 (14:27 +0400)]
kvm: Add --kernel parameter handling

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Fixup boot selector
Cyrill Gorcunov [Sun, 28 Mar 2010 14:21:05 +0000 (18:21 +0400)]
kvm: Fixup boot selector

The boot selector for modern boot protocol is 64K not 4K.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Use 64 bit names when showing registers
Cyrill Gorcunov [Sat, 27 Mar 2010 20:12:10 +0000 (23:12 +0300)]
kvm: Use 64 bit names when showing registers

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: load_bzimage: Proper check for number of setup sectors
Cyrill Gorcunov [Sat, 27 Mar 2010 19:11:26 +0000 (22:11 +0300)]
kvm: load_bzimage: Proper check for number of setup sectors

We should check for the number of setup sectors before adding the last one.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Introduce host_real_to_guest() helper function
Pekka Enberg [Sat, 27 Mar 2010 18:55:27 +0000 (20:55 +0200)]
kvm: Introduce host_real_to_guest() helper function

Introduce a new host_real_to_guest() helper function and use it to clean up
code.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Setup stack for the kernel
Pekka Enberg [Sat, 27 Mar 2010 18:46:33 +0000 (20:46 +0200)]
kvm: Setup stack for the kernel

The Linux kernel expects stack to be set up for it.  Fixes a bug in the program
where we start to run an instruction stream filled with zeros.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Load kernel at 0x1000
Pekka Enberg [Sat, 27 Mar 2010 18:23:35 +0000 (20:23 +0200)]
kvm: Load kernel at 0x1000

As described in Documentation/x86/boot.txt, memory starting at 0x1000 is
available for the boot loader.  As we don't have a separate boot loader, load
the kernel at the address.  Note: we're setting up the segment selector here so
0x0100:0x0000 in 16-bit real mode is 0x1000 in physical memory.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Fix kernel boot IP
Pekka Enberg [Sat, 27 Mar 2010 18:16:51 +0000 (20:16 +0200)]
kvm: Fix kernel boot IP

Booting to a Linux kernel is no longer supported.  Therefore, start executing
at offset 0x200 of bzImage which has a jump to real-mode setup code.  See
Documentation/x86/boot.txt for more details.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Remove 'reset vector' hack
Pekka Enberg [Sat, 27 Mar 2010 18:05:04 +0000 (20:05 +0200)]
kvm: Remove 'reset vector' hack

As explained by Avi Kivity, KVM on Intel requires segment 'base' to equal to
'selector * 16'.  Fix that up and remove the 'reset vector' hack.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Fix setup size calculation
Pekka Enberg [Sat, 27 Mar 2010 17:59:52 +0000 (19:59 +0200)]
kvm: Fix setup size calculation

I need a brown paper bag.  When converting sectors to bytes, we need to shift
by 9 ("512"), not 4 ("16")...

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agoRevert "kvm: Enable 'interrupt request window'"
Pekka Enberg [Sat, 27 Mar 2010 16:56:38 +0000 (18:56 +0200)]
Revert "kvm: Enable 'interrupt request window'"

This reverts commit c1a099311e695bfe1caca9a11e294fbd70d3ba11.  Interrupt
request windows are for host to guest interrupt injection.  Software interrupts
and traps happen 100% in the guest.

14 years agokvm: Enable 'interrupt request window'
Pekka Enberg [Sat, 27 Mar 2010 12:13:25 +0000 (14:13 +0200)]
kvm: Enable 'interrupt request window'

This patch enables KVM 'interrupt request window' so that KVM_RUN returns when
we hit an interrupt.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Document the 'reset vector' hack
Pekka Enberg [Sat, 27 Mar 2010 09:15:31 +0000 (11:15 +0200)]
kvm: Document the 'reset vector' hack

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Clean up reset vector setup code
Pekka Enberg [Sat, 27 Mar 2010 09:08:32 +0000 (11:08 +0200)]
kvm: Clean up reset vector setup code

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Add some single-step debugging and don't stop running
Pekka Enberg [Sat, 27 Mar 2010 08:58:58 +0000 (10:58 +0200)]
kvm: Add some single-step debugging and don't stop running

Now that we can execute some instructions, don't stop on first single step but
dump some debugging output instead and continue running.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Hardcode a "reset vector" at f000:fff0
Pekka Enberg [Sat, 27 Mar 2010 08:53:15 +0000 (10:53 +0200)]
kvm: Hardcode a "reset vector" at f000:fff0

It seems that if we attempt to run code at any other location than f000:fff0,
we get an KVM_EXIT_UNKNOWN error. To work around that, hardcode a "reset
vector" at f000:fff0 that jumps to 0000:0x7c000 and load the kernel at the
latter location.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
14 years agokvm: Read the whole bzImage to memory
Pekka Enberg [Sat, 27 Mar 2010 08:15:18 +0000 (10:15 +0200)]
kvm: Read the whole bzImage to memory

We need to read the whole bzImage to memory; otherwise we miss some of the
setup code.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>