Pawan Gupta ee32a74416 x86/tsx: Disable TSX development mode at boot ... commit 400331f8ff upstream. A microcode update on some Intel processors causes all TSX transactions to always abort by default[*]. Microcode also added functionality to re-enable TSX for development purposes. With this microcode loaded, if tsx=on was passed on the cmdline, and TSX development mode was already enabled before the kernel boot, it may make the system vulnerable to TSX Asynchronous Abort (TAA). To be on safer side, unconditionally disable TSX development mode during boot. If a viable use case appears, this can be revisited later. [*]: Intel TSX Disable Update for Selected Processors, doc ID: 643557 [ bp: Drop unstable web link, massage heavily. ] Suggested-by: Andrew Cooper <andrew.cooper3@citrix.com> Suggested-by: Borislav Petkov <bp@alien8.de> Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com> Signed-off-by: Borislav Petkov <bp@suse.de> Tested-by: Neelima Krishnan <neelima.krishnan@intel.com> Cc: <stable@vger.kernel.org> Link: https://lore.kernel.org/r/347bd844da3a333a9793c6687d4e4eb3b2419a3e.1646943780.git.pawan.kumar.gupta@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2022-04-20 09:36:26 +02:00
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include	x86/tsx: Disable TSX development mode at boot	2022-04-20 09:36:26 +02:00
kcpuid	tools/x86/kcpuid: Add AMD leaf 0x8000001E	2021-03-18 11:36:14 +01:00
lib	tools arch: Update arch/x86/lib/mem{cpy,set}_64.S copies used in 'perf bench mem memcpy'	2022-01-13 10:54:44 -03:00
tools	x86/insn: Make inat-tables.c suitable for pre-decompression code	2020-09-07 19:45:24 +02:00