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Konrad Rzeszutek Wilk
4ca5e0103d
return values. For success they used to be 1 ([SAVE,RESTORE]_BEGIN), 0 if guest did not have any tmem (but only for SAVE_BEGIN), and -1 for any type of failure. And SAVE_END (which you would think would mirror SAVE_BEGIN) had 0 for success and -1 if guest did not any tmem enabled for it. This is confusing. Now the code will return 0 if the operation was success. Various XEN_EXX values are returned if tmem is not enabled or the operation could not performed. The xc_tmem.c code only needs one place to check - where we use SAVE_BEGIN. The place where RESTORE_BEGIN is used will have errno with the proper error value and return will be -1, so will still fail properly. Acked-by: Andrew Cooper <andrew.cooper3@citrix.com> Acked-by: Wei Liu <wei.liu2@citrix.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>