ср, 15 мая 2019 г. в 11:10, Konstantin Belousov <k...@freebsd.org>:
> On Wed, May 15, 2019 at 08:54:04AM +0300, Dmitry Chagin wrote: > > вт, 14 мая 2019 г. в 20:02, Konstantin Belousov <k...@freebsd.org>: > > > > > Author: kib > > > Date: Tue May 14 17:02:20 2019 > > > New Revision: 347566 > > > URL: https://svnweb.freebsd.org/changeset/base/347566 > > > > > > Log: > > > Mitigations for Microarchitectural Data Sampling. > > > > > > Microarchitectural buffers on some Intel processors utilizing > > > speculative execution may allow a local process to obtain a memory > > > disclosure. An attacker may be able to read secret data from the > > > kernel or from a process when executing untrusted code (for example, > > > in a web browser). > > > > > > Reference: > > > > https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00233.html > > > Security: CVE-2018-12126, CVE-2018-12127, CVE-2018-12130, > > > CVE-2019-11091 > > > Security: FreeBSD-SA-19:07.mds > > > Reviewed by: jhb > > > Tested by: emaste, lwhsu > > > Approved by: so (gtetlow) > > > > > > Modified: > > > head/sys/amd64/amd64/exception.S > > > head/sys/amd64/amd64/genassym.c > > > head/sys/amd64/amd64/initcpu.c > > > head/sys/amd64/amd64/machdep.c > > > head/sys/amd64/amd64/support.S > > > > > > > > > > > Hi, Kostik! > > > > cc -target x86_64-unknown-freebsd13.0 > > --sysroot=/home/dchagin/obj/home/dchagin/head/amd64.amd64/tmp > > -B/home/dchagin/obj/home/dchagin/head/amd64.amd64/tmp/usr/bin -c -x > > assembler-with-cpp -DLOCORE -O2 -pipe -fno-strict-aliasing -g -nostdinc > > -I. -I/home/dchagin/head/sys -I/home/dchagin/head/sys/contrib/ck/include > > -I/home/dchagin/head/sys/contrib/libfdt -D_KERNEL > > -DHAVE_KERNEL_OPTION_HEADERS -include opt_global.h > > -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer -MD > > -MF.depend.support.o -MTsupport.o > > -fdebug-prefix-map=./machine=/home/dchagin/head/sys/amd64/include > > -fdebug-prefix-map=./x86=/home/dchagin/head/sys/x86/include > -mcmodel=kernel > > -mno-red-zone -mno-mmx -mno-sse -msoft-float > > -fno-asynchronous-unwind-tables -ffreestanding -fwrapv -fstack-protector > > -gdwarf-2 -Wall -Wredundant-decls -Wnested-externs -Wstrict-prototypes > > -Wmissing-prototypes -Wpointer-arith -Wcast-qual -Wundef > -Wno-pointer-sign > > -D__printf__=__freebsd_kprintf__ -Wmissing-include-dirs > > -fdiagnostics-show-option -Wno-unknown-pragmas > > -Wno-error-tautological-compare -Wno-error-empty-body > > -Wno-error-parentheses-equality -Wno-error-unused-function > > -Wno-error-pointer-sign -Wno-error-shift-negative-value > > -Wno-address-of-packed-member -mno-aes -mno-avx -std=iso9899:1999 > > -Werror /home/dchagin/head/sys/amd64/amd64/support.S > > /home/dchagin/head/sys/amd64/amd64/support.S:1809:2: error: instruction > > requires: AVX-512 ISA > > vmovdqa64 %zmm0, %gs:0x340 > > ^ > > /home/dchagin/head/sys/amd64/amd64/support.S:1810:2: error: instruction > > requires: AVX-512 ISA > > vpxor %zmm0, %zmm0, %zmm0 > > ^ > > /home/dchagin/head/sys/amd64/amd64/support.S:1813:2: error: instruction > > requires: AVX-512 DQ ISA > > vorpd (%rdx), %zmm0, %zmm0 > > ^ > > /home/dchagin/head/sys/amd64/amd64/support.S:1814:2: error: instruction > > requires: AVX-512 DQ ISA > > vorpd (%rdx), %zmm0, %zmm0 > > ^ > > /home/dchagin/head/sys/amd64/amd64/support.S:1826:2: error: instruction > > requires: AVX-512 ISA > > vmovdqa64 %gs:0x340, %zmm0 > > ^ > > *** Error code 1 > > > > > > I/m missied something? > Yes, you are using older compiler than current. Perhaps you are using > clang 6.0 still. Update your world. > > FWIW, this is is reason why the sw sequences use .byte in 11.2/12.0 > patches. I do not want to put such abomination into live code base, > remembering aesni.ko. > yes, you are right. thank you! but in the best tradition of the project, the system does not built, I got ar error when building static llvm library: ar: fatal: Symbol table offset overflow *** Error code 70 Stop. make[6]: stopped in /home/dchagin/head/lib/clang/libllvm *** Error code 1 _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
