- 24 Apr, 2008 40 commits
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Markus Armbruster authored
This is a pair of Xen para-virtual frontend device drivers: drivers/video/xen-fbfront.c provides a framebuffer, and drivers/input/xen-kbdfront provides keyboard and mouse. The backends run in dom0 user space. The two drivers are not in two separate patches, because the intermediate step (one driver, not the other) is somewhat problematic: the backend in dom0 needs both drivers, and will refuse to complete device initialization unless they're both present. Signed-off-by:
Markus Armbruster <armbru@redhat.com> Signed-off-by:
Ingo Molnar <mingo@elte.hu> Signed-off-by:
Thomas Gleixner <tglx@linutronix.de>
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Mark McLoughlin authored
Before getting merged, xen-blkfront was xenblk and xen-netfront was xennet. Temporarily adding compatibility module aliases eases upgrades from older versions by e.g. allowing mkinitrd to find the new version of the module. Signed-off-by:
Mark McLoughlin <markmc@redhat.com> Signed-off-by:
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Mark McLoughlin authored
Add module aliases to support autoprobing modules for xen frontend devices. Signed-off-by:
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Christian Limpach authored
When the xen block frontend driver is built as a module the module load is only synchronous up to the point where the frontend and the backend become connected rather than when the disk is added. This means that there can be a race on boot between loading the module and loading the dm-* modules and doing the scan for LVM physical volumes (all in the initrd). In the failure case the disk is not present until after the scan for physical volumes is complete. Taken from: http://xenbits.xensource.com/linux-2.6.18-xen.hg?rev/11483a00c017Signed-off-by:
Christian Limpach <Christian.Limpach@xensource.com> Signed-off-by:
Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by:
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Jeremy Fitzhardinge authored
info->dev is never initialized to anything, so bdget(info->dev) is meaningless. Get rid of info->dev, and use bdget_disk on the gendisk. Signed-off-by:
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Markus Armbruster authored
Frontends are expected to write their protocol ABI to xenstore. Since the protocol ABI defaults to the backend's native ABI, things work fine without that as long as the frontend's native ABI is identical to the backend's native ABI. This is not the case for xen-blkfront running 32-on-64, because its ABI differs between 32 and 64 bit, and thus needs this fix. Based on http://xenbits.xensource.com/xen-unstable.hg?rev/c545932a18f3 and http://xenbits.xensource.com/xen-unstable.hg?rev/ffe52263b430 by Gerd Hoffmann <kraxel@suse.de> Signed-off-by:
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Isaku Yamahata authored
On xen/ia64 and xen/powerpc hypercall arguments are passed by pseudo physical address (guest physical address) so that it's necessary to convert from virtual address into pseudo physical address. The frame work is called xencomm. Import arch generic part of xencomm. Signed-off-by:
Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by:
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Isaku Yamahata authored
split out x86 specific part from grant-table.c and allow ia64/xen specific initialization. ia64/xen grant table is based on pseudo physical address (guest physical address) unlike x86/xen. On ia64 init_mm doesn't map identity straight mapped area. ia64/xen specific grant table initialization is necessary. Signed-off-by:
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Isaku Yamahata authored
Don't use alloc_vm_area()/free_vm_area() directly, instead define xen_alloc_vm_area()/xen_free_vm_area() and use them. alloc_vm_area()/free_vm_area() are used to allocate/free area which are for grant table mapping. Xen/x86 grant table is based on virtual address so that alloc_vm_area()/free_vm_area() are suitable. On the other hand Xen/ia64 (and Xen/powerpc) grant table is based on pseudo physical address (guest physical address) so that allocation should be done differently. The original version of xenified Linux/IA64 have its own allocate_vm_area()/free_vm_area() definitions which don't allocate vm area contradictory to those names. Now vanilla Linux already has its definitions so that it's impossible to have IA64 definitions of allocate_vm_area()/free_vm_area(). Instead introduce xen_allocate_vm_area()/xen_free_vm_area() and use them. Signed-off-by:
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Isaku Yamahata authored
The definitions in include/asm/xen/page.h are arch specific. ia64/xen wants to define its own version. So move them to arch specific directory and keep include/xen/page.h in order not to break compilation. Signed-off-by:
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Isaku Yamahata authored
Define resend_irq_on_evtchn() which ia64/xen uses. Although it isn't used by current x86/xen code, it's arch generic so that put it into common code. Signed-off-by:
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Isaku Yamahata authored
Remove x86 dependency in drivers/xen/events.c for ia64/xen support introducing include/asm/xen/events.h. Introduce xen_irqs_disabled() to hide regs->flags Introduce xen_do_IRQ() to hide regs->orig_ax. make enum ipi_vector definition arch specific. ia64/xen needs four vectors. Add one rmb() because on ia64 xchg() isn't barrier. Signed-off-by:
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Isaku Yamahata authored
move arch/x86/xen/events.c undedr drivers/xen to share codes with x86 and ia64. And minor adjustment to compile. ia64/xen also uses events.c Signed-off-by:
Yaozu (Eddie) Dong <eddie.dong@intel.com> Signed-off-by:
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Isaku Yamahata authored
ia64/xen also uses it too. Move it into common place so that ia64/xen can share the code. Signed-off-by:
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Isaku Yamahata authored
Add xen handles realted definitions for xen vcpu which ia64/xen needs. Pointer argumsnts for ia64/xen hypercall are passed in pseudo physical address (guest physical address) so that it is required to convert guest kernel virtual address into pseudo physical address. The xen guest handle represents such arguments. Signed-off-by:
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Isaku Yamahata authored
Add xen handles realted definitions for grant table which ia64/xen needs. Pointer argumsnts for ia64/xen hypercall are passed in pseudo physical address (guest physical address) so that it is required to convert guest kernel virtual address into pseudo physical address right before issuing hypercall. The xen guest handle represents such arguments. Define necessary handles and helper functions. Signed-off-by:
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Isaku Yamahata authored
Add xen VIRQ numbers defined for arch specific use. ia64/xen domU uses VIRQ_ARCH_0 for virtual itc timer. Although all those constants aren't used yet by ia64 at this moment, add all arch specific VIRQ numbers. Signed-off-by:
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Isaku Yamahata authored
Add xen hypercall numbers defined for arch specific use. ia64/xen domU uses __HYPERVISOR_arch_1 to manipulate paravirtualized IOSAPIC. Although all those constants aren't used yet by IA64 at this moment, add all arch specific hypercall numbers. Signed-off-by:
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Jeremy Fitzhardinge authored
Use jmp rather than call for the iret fixup, so its consistent with the sysexit fixup, and it simplifies the stack (which is already complex). Signed-off-by:
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Jeremy Fitzhardinge authored
Mask MCE/MCA out of cpu caps. Its harmless to leave them there, but it does prevent the kernel from starting an unnecessary thread. Signed-off-by:
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Jeremy Fitzhardinge authored
If an event comes in while events are currently being processed, then just increment the counter and have the outer event loop reprocess the pending events. This prevents unbounded recursion on heavy event loads (of course massive event storms will cause infinite loops). Signed-off-by:
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Jeremy Fitzhardinge authored
retrigger_dynirq() was incomplete, and didn't properly set the event to be pending again. It doesn't seem to actually get used. Signed-off-by:
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Jeremy Fitzhardinge authored
Xen supports the notion of a debug interrupt which can be triggered from the console. For now this is implemented to show pending events, masks and each CPU's pending event set. Signed-off-by:
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Jeremy Fitzhardinge authored
64-bit Xen supports sysenter for 32-bit guests, so support its use. (sysenter is faster than int $0x80 in 32-on-64.) sysexit is still not supported, so we fake it up using iret. Signed-off-by:
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Jeremy Fitzhardinge authored
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Jeremy Fitzhardinge authored
All pagetables need fundamentally the same setup and destruction, so just use the same code for everything. Signed-off-by:
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Jeremy Fitzhardinge authored
Make KERNEL_PGD_PTRS common, as previously it was only being defined for 32-bit. There are a couple of follow-on changes from this: - KERNEL_PGD_PTRS was being defined in terms of USER_PGD_PTRS. The definition of USER_PGD_PTRS doesn't really make much sense on x86-64, since it can have two different user address-space configurations. I renamed USER_PGD_PTRS to KERNEL_PGD_BOUNDARY, which is meaningful for all of 32/32, 32/64 and 64/64 process configurations. - USER_PTRS_PER_PGD was also defined and was being used for similar purposes. Converting its users to KERNEL_PGD_BOUNDARY left it completely unused, and so I removed it. Signed-off-by:
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Jeremy Fitzhardinge authored
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Jeremy Fitzhardinge authored
Xen's pte operations on mfns can be unified like the kernel's pfn operations. Signed-off-by:
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Jeremy Fitzhardinge authored
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Jeremy Fitzhardinge authored
We can fold the essentially common pte functions together now. Signed-off-by:
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Jeremy Fitzhardinge authored
pte_t always contains a "pte" field for the whole pte value, so make use of it. Signed-off-by:
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Jeremy Fitzhardinge authored
Convert Xen pagetable handling to use appropriate *val_t types. Signed-off-by:
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Jeremy Fitzhardinge authored
Turn paravirt stubs into inline functions, so that the arguments are still typechecked. Signed-off-by:
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Jeremy Fitzhardinge authored
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Jeremy Fitzhardinge authored
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Jeremy Fitzhardinge authored
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Jeremy Fitzhardinge authored
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Jeremy Fitzhardinge authored
Rename (alloc|release)_(pt|pd) to pte/pmd to explicitly match the name of the appropriate pagetable level structure. [ x86.git merge work by Mark McLoughlin <markmc@redhat.com> ] Signed-off-by:
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Jeremy Fitzhardinge authored
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