openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

xen: fix incorrect vcpu_register_vcpu_info hypercall argument 

The kernel's copy of struct vcpu_register_vcpu_info was out of date,
at best causing the hypercall to fail and the guest kernel to fall
back to the old mechanism, or worse, causing random memory corruption.

[ Stable folks: applies to 2.6.23 ]

Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Cc: Stable Kernel <stable@kernel.org>
Cc: Morten =?utf-8?q?B=C3=B8geskov?= <xen-users@morten.bogeskov.dk>
Cc: Mark Williamson <mark.williamson@cl.cam.ac.uk>
This commit is contained in:
Jeremy Fitzhardinge 2007-10-16 11:51:31 -07:00 committed by Jeremy Fitzhardinge
parent fb1d84043c
commit e3d2697669
2 changed files with 4 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/x86/xen/enlighten.c
View File

@ -113,7 +113,7 @@ static void __init xen_vcpu_setup(int cpu)
info.mfn = virt_to_mfn(vcpup);
info.offset = offset_in_page(vcpup);
printk(KERN_DEBUG "trying to map vcpu_info %d at %p, mfn %x, offset %d\n",
printk(KERN_DEBUG "trying to map vcpu_info %d at %p, mfn %llx, offset %d\n",
cpu, vcpup, info.mfn, info.offset);
/* Check to see if the hypervisor will put the vcpu_info

5
include/xen/interface/vcpu.h
View File

@ -160,8 +160,9 @@ struct vcpu_set_singleshot_timer {
*/
#define VCPUOP_register_vcpu_info 10 /* arg == struct vcpu_info */
struct vcpu_register_vcpu_info {
uint32_t mfn; /* mfn of page to place vcpu_info */
uint32_t offset; /* offset within page */
uint64_t mfn; /* mfn of page to place vcpu_info */
uint32_t offset; /* offset within page */
uint32_t rsvd; /* unused */
};
#endif /* __XEN_PUBLIC_VCPU_H__ */