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| author | Jeremy Fitzhardinge <jeremy@goop.org> | 2008-06-25 00:19:30 -0400 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-07-08 07:15:56 -0400 |
| commit | a00394f81f419beb6fb9f7023bd4d15913dc625d (patch) | |
| tree | 0faef5a52c4244173a3669bc646ef12bb79d6bc6 /include/asm-x86/fixmap_64.h | |
| parent | 6680415481c7bd38967cf7488787f509f17ba307 (diff) | |
x86, 64-bit: swapgs pvop with a user-stack can never be called
It's never safe to call a swapgs pvop when the user stack is current -
it must be inline replaced. Rather than making a call, the
SWAPGS_UNSAFE_STACK pvop always just puts "swapgs" as a placeholder,
which must either be replaced inline or trap'n'emulated (somehow).
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: xen-devel <xen-devel@lists.xensource.com>
Cc: Stephen Tweedie <sct@redhat.com>
Cc: Eduardo Habkost <ehabkost@redhat.com>
Cc: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/asm-x86/fixmap_64.h')
0 files changed, 0 insertions, 0 deletions