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| author | Brian Gerst <brgerst@gmail.com> | 2010-03-21 09:00:43 -0400 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2010-05-03 13:39:26 -0700 |
| commit | 40d2e76315da38993129090dc5d56377e573c312 (patch) | |
| tree | 8f585daa23780aa0841ac72b34053f9deb00041c /arch/x86/Kconfig.cpu | |
| parent | be1066bbcd443a65df312fdecea7e4959adedb45 (diff) | |
| download | lwn-40d2e76315da38993129090dc5d56377e573c312.tar.gz lwn-40d2e76315da38993129090dc5d56377e573c312.zip | |
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.cpu | 4 |
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 |