diff options
| author | Jan Beulich <jbeulich@suse.com> | 2019-11-11 15:32:59 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2019-11-19 21:58:28 +0100 |
| commit | 922eea2ce5c799228d9ff1be9890e6873ce8fff6 (patch) | |
| tree | 32e78a83ff9255e5e773bf3e25f04b34d762e655 /arch/x86/kernel/doublefault.c | |
| parent | 29b810f5a5ec127d3143770098e05981baa3eb77 (diff) | |
x86/xen/32: Simplify ring check in xen_iret_crit_fixup()
This can be had with two instead of six insns, by just checking the high
CS.RPL bit.
Also adjust the comment - there would be no #GP in the mentioned cases, as
there's no segment limit violation or alike. Instead there'd be #PF, but
that one reports the target EIP of said branch, not the address of the
branch insn itself.
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Juergen Gross <jgross@suse.com>
Link: https://lkml.kernel.org/r/a5986837-01eb-7bf8-bf42-4d3084d6a1f5@suse.com
Diffstat (limited to 'arch/x86/kernel/doublefault.c')
0 files changed, 0 insertions, 0 deletions