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authorBrian Gerst <brgerst@gmail.com>2010-03-21 09:00:43 -0400
committerH. Peter Anvin <hpa@zytor.com>2010-05-03 13:39:26 -0700
commit40d2e76315da38993129090dc5d56377e573c312 (patch)
tree8f585daa23780aa0841ac72b34053f9deb00041c /arch/x86/Kconfig.cpu
parentbe1066bbcd443a65df312fdecea7e4959adedb45 (diff)
x86-32: Rework cache flush denied handler
The cache flush denied error is an erratum on some AMD 486 clones. If an invd instruction is executed in userspace, the processor calls exception 19 (13 hex) instead of #GP (13 decimal). On cpus where XMM is not supported, redirect exception 19 to do_general_protection(). Also, remove die_if_kernel(), since this was the last user. Signed-off-by: Brian Gerst <brgerst@gmail.com> LKML-Reference: <1269176446-2489-2-git-send-email-brgerst@gmail.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch/x86/Kconfig.cpu')
-rw-r--r--arch/x86/Kconfig.cpu4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/Kconfig.cpu b/arch/x86/Kconfig.cpu
index a19829374e6a..6f6792c56015 100644
--- a/arch/x86/Kconfig.cpu
+++ b/arch/x86/Kconfig.cpu
@@ -338,6 +338,10 @@ config X86_F00F_BUG
def_bool y
depends on M586MMX || M586TSC || M586 || M486 || M386
+config X86_INVD_BUG
+ def_bool y
+ depends on M486 || M386
+
config X86_WP_WORKS_OK
def_bool y
depends on !M386