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| author | Olaf Hering <olaf@aepfle.de> | 2012-10-19 16:09:05 +0200 |
|---|---|---|
| committer | Olaf Hering <olaf@aepfle.de> | 2012-10-19 16:09:05 +0200 |
| commit | 55cc7f063053ccf88d945a7480de12b3bc67f8c3 (patch) | |
| tree | c7007a75e35fd23bb6041d3a45150ca7f95b2987 /xen/arch/x86/hvm/hvm.c | |
| parent | 497f6ad7f0b04b265bcccf2624f798556ab3cafb (diff) | |
| download | xen-55cc7f063053ccf88d945a7480de12b3bc67f8c3.tar.gz xen-55cc7f063053ccf88d945a7480de12b3bc67f8c3.tar.bz2 xen-55cc7f063053ccf88d945a7480de12b3bc67f8c3.zip | |
hvm: handle PoD and grant pages in HVMOP_get_mem_type
During kexec in a ballooned PVonHVM guest the new kernel needs to check
each pfn if its backed by a mfn to find ballooned pages. Currently all
PoD and grant pages will appear as HVMMEM_mmio_dm, so the new kernel has
to assume they are ballooned. This is wrong: PoD pages may turn into
real RAM at runtime, grant pages are also RAM.
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Acked-by: Tim Deegan <tim@xen.org>
Committed-by: Tim Deegan <tim@xen.org>
Diffstat (limited to 'xen/arch/x86/hvm/hvm.c')
| -rw-r--r-- | xen/arch/x86/hvm/hvm.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/xen/arch/x86/hvm/hvm.c b/xen/arch/x86/hvm/hvm.c index b83e33664e..c7ce8104c7 100644 --- a/xen/arch/x86/hvm/hvm.c +++ b/xen/arch/x86/hvm/hvm.c @@ -4086,6 +4086,10 @@ long do_hvm_op(unsigned long op, XEN_GUEST_HANDLE_PARAM(void) arg) a.mem_type = HVMMEM_ram_ro; else if ( p2m_is_ram(t) ) a.mem_type = HVMMEM_ram_rw; + else if ( p2m_is_magic(t) ) + a.mem_type = HVMMEM_ram_rw; + else if ( p2m_is_grant(t) ) + a.mem_type = HVMMEM_ram_rw; else a.mem_type = HVMMEM_mmio_dm; rc = copy_to_guest(arg, &a, 1) ? -EFAULT : 0; |