From ca11b53896365c948426974cb90e8f71c70d123b Mon Sep 17 00:00:00 2001 From: Simon South Date: Sun, 31 May 2020 20:36:43 -0400 Subject: [PATCH] Guard floating-point opcodes with explicit memory barrier --- src/interp/engine/interp-inlining.h | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/src/interp/engine/interp-inlining.h b/src/interp/engine/interp-inlining.h index 3339b0e..4ee5c5a 100644 --- a/src/interp/engine/interp-inlining.h +++ b/src/interp/engine/interp-inlining.h @@ -78,8 +78,17 @@ 4.3, we need to insert a label, and ensure its address is taken (to stop it being optimised out). However, this reduces performance on PowerPC by approx 1 - 2%. + + With gcc 5 and newer an asm statement with a "memory" + clobber argument explicitly sets a memory barrier for the + compiler, preventing it from reordering memory accesses + in a way that breaks decaching. */ -#if (__GNUC__ == 4) && (__GNUC_MINOR__ >= 3) +#if (__GNUC__ > 4) +#define DEF_GUARD_TABLE(level) /* none */ +#define GUARD(opcode, level) __asm__("" ::: "memory"); +#define GUARD_TBLS /* none */ +#elif (__GNUC__ == 4) && (__GNUC_MINOR__ >= 3) #define DEF_GUARD_TABLE(level) DEF_HANDLER_TABLE(level, GUARD) #define GUARD(opcode, level) label(opcode, level, GUARD) #define GUARD_TBLS , HNDLR_TBLS(GUARD) -- 2.26.2 token.scm?id=188269f06252d746e5015b3e4c80db7cfd7018e1'>commitdiff
path: root/gnu/services/security-token.scm
AgeCommit message (Expand)Author
2021-07-03services: pcscd: Fix daemon signal handling...."pcscd" wouldn't handle SIGTERM as it inherit ignoring this signal (and others) from its parent shepherd; fork+exec-command restore signal handling. Fixes <https://issues.guix.gnu.org/45202>. * gnu/services/security-token.scm (pcscd)[start]: Use fork+exec-command to start "pcscd". Brice Waegeneire
2021-06-19services: pcscd: Cleanup socket when started....Otherwise when pcscd doesn't terminate properly (ie. receive a SIGKILL), it won't start again because of it's socket already existing. * gnu/services/security-token.scm (pcscd-shepherd-service)[start]: Remove existing socket file. Brice Waegeneire
2020-12-13gnu: htop: Update to 3.0.3....* gnu/packages/admin.scm (htop): Update to 3.0.3. Tobias Geerinckx-Rice
2020-12-12services: pcscd-shepherd-service: Fix PID file location....Fixes <http://issues.guix.gnu.org/45202>. * gnu/services/security-token.scm (pcscd-shepherd-service): Look for pcscd.pid in /run instead of /var/run. Reported by Raffael Stocker <r.stocker@mnet-mail.de>. Tobias Geerinckx-Rice
2018-08-20gnu: services: Fix pcscd activation bug....Fixes: <https://bugs.gnu.org/32478>. * gnu/services/security-token.scm (pcscd-activation): Idempotently create the /var/lib/pcsc symlink so that it does not fail when it already exists. Chris Marusich
2018-08-16gnu: services: Add pcscd service....* gnu/services/security-token.scm: New file. * gnu/tests/security-token.scm: New file. * gnu/local.mk (GNU_SYSTEM_MODULES): Register new files. * doc/guix.texi (Miscellaneous Services): Document the service. Arun Isaac