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| author | David S. Miller <davem@davemloft.net> | 2015-06-01 22:33:25 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-06-01 22:51:30 -0700 |
| commit | dda922c831d1661c11a3ae1051b7160236f6ffb0 (patch) | |
| tree | 2fe588dbc4dc90addaabf303713fb2c6af0dc19b /arch/x86/kernel/i387.c | |
| parent | db3397b9aa30d334be237170e048dcd96e1e951d (diff) | |
| parent | c46a024ea5eb0165114dbbc8c82c29b7bcf66e71 (diff) | |
| download | linux-dda922c831d1661c11a3ae1051b7160236f6ffb0.tar.gz | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts: drivers/net/phy/amd-xgbe-phy.c drivers/net/wireless/iwlwifi/Kconfig include/net/mac80211.h iwlwifi/Kconfig and mac80211.h were both trivial overlapping changes. The drivers/net/phy/amd-xgbe-phy.c file got removed in 'net-next' and the bug fix that happened on the 'net' side is already integrated into the rest of the amd-xgbe driver. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/x86/kernel/i387.c')
| -rw-r--r-- | arch/x86/kernel/i387.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/x86/kernel/i387.c b/arch/x86/kernel/i387.c index 009183276bb7..6185d3141219 100644 --- a/arch/x86/kernel/i387.c +++ b/arch/x86/kernel/i387.c @@ -173,6 +173,21 @@ static void init_thread_xstate(void) xstate_size = sizeof(struct i387_fxsave_struct); else xstate_size = sizeof(struct i387_fsave_struct); + + /* + * Quirk: we don't yet handle the XSAVES* instructions + * correctly, as we don't correctly convert between + * standard and compacted format when interfacing + * with user-space - so disable it for now. + * + * The difference is small: with recent CPUs the + * compacted format is only marginally smaller than + * the standard FPU state format. + * + * ( This is easy to backport while we are fixing + * XSAVES* support. ) + */ + setup_clear_cpu_cap(X86_FEATURE_XSAVES); } /* |