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| author | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2012-10-10 13:25:48 -0400 |
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| committer | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2012-10-12 08:49:06 -0400 |
| commit | 1a7bbda5b1ab0e02622761305a32dc38735b90b2 (patch) | |
| tree | 2dca1fb5dadd1623d840fd5d4f474ef3db5413a7 /drivers/xen | |
| parent | cd0608e71e9757f4dae35bcfb4e88f4d1a03a8ab (diff) | |
| download | linux-1a7bbda5b1ab0e02622761305a32dc38735b90b2.tar.gz | |
xen/bootup: allow {read|write}_cr8 pvops call.
We actually do not do anything about it. Just return a default value of zero and if the kernel tries to write anything but 0 we BUG_ON. This fixes the case when an user tries to suspend the machine and it blows up in save_processor_state b/c 'read_cr8' is set to NULL and we get: kernel BUG at /home/konrad/ssd/linux/arch/x86/include/asm/paravirt.h:100! invalid opcode: 0000 [#1] SMP Pid: 2687, comm: init.late Tainted: G O 3.6.0upstream-00002-gac264ac-dirty #4 Bochs Bochs RIP: e030:[<ffffffff814d5f42>] [<ffffffff814d5f42>] save_processor_state+0x212/0x270 .. snip.. Call Trace: [<ffffffff810733bf>] do_suspend_lowlevel+0xf/0xac [<ffffffff8107330c>] ? x86_acpi_suspend_lowlevel+0x10c/0x150 [<ffffffff81342ee2>] acpi_suspend_enter+0x57/0xd5 CC: stable@vger.kernel.org Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'drivers/xen')
0 files changed, 0 insertions, 0 deletions