Revision 1457d8cf7664f34c4ba534c1073821a559a2f6f9 authored by Juergen Gross on 07 November 2018, 17:01:00 UTC, committed by Juergen Gross on 09 November 2018, 07:16:55 UTC
Commit 9da3f2b7405440 ("x86/fault: BUG() when uaccess helpers fault on
kernel addresses") introduced a regression for booting Xen PV guests.
Xen PV guests are using __put_user() and __get_user() for accessing the
p2m map (physical to machine frame number map) as accesses might fail
in case of not populated areas of the map.
With above commit using __put_user() and __get_user() for accessing
kernel pages is no longer valid. So replace the Xen hack by adding
appropriate p2m access functions using the default fixup handler.
Fixes: 9da3f2b7405440 ("x86/fault: BUG() when uaccess helpers fault on kernel addresses")
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
1 parent 6cc4a08
| File | Mode | Size |
|---|---|---|
| .gitignore | -rw-r--r-- | 44 bytes |
| Kconfig | -rw-r--r-- | 3.4 KB |
| Makefile | -rw-r--r-- | 4.1 KB |
| blacklist.c | -rw-r--r-- | 4.0 KB |
| blacklist.h | -rw-r--r-- | 84 bytes |
| blacklist_hashes.c | -rw-r--r-- | 166 bytes |
| blacklist_nohashes.c | -rw-r--r-- | 122 bytes |
| system_certificates.S | -rw-r--r-- | 828 bytes |
| system_keyring.c | -rw-r--r-- | 7.5 KB |
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