| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <20260123044034.141247-5-tan.shaopeng@fujitsu.com> Date: Fri, 23 Jan 2026 13:40:30 +0900 From: Shaopeng Tan <tan.shaopeng@...itsu.com> To: fenghuay@...dia.com, reinette.chatre@...el.com, ben.horgan@....com, james.morse@....com, shuah@...nel.org Cc: linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, tan.shaopeng@...itsu.com Subject: [RFC PATCH 4/5] kselftests/resctrl: set shareable_mask to zero if all bits are shared between software and hardware When all bits are shared between software and hardware, CAT test can not run. In the case of MPAM driver, even if all bits are shared between hardware and software, they can be used as if software-exclusive. To enable CAT, if all bits are shared between hardware and software, set shareable_mask to zero. Signed-off-by: Shaopeng Tan <tan.shaopeng@...itsu.com> --- tools/testing/selftests/resctrl/resctrlfs.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/tools/testing/selftests/resctrl/resctrlfs.c b/tools/testing/selftests/resctrl/resctrlfs.c index 195f04c4d158..4b9ee803a112 100644 --- a/tools/testing/selftests/resctrl/resctrlfs.c +++ b/tools/testing/selftests/resctrl/resctrlfs.c @@ -495,6 +495,8 @@ int get_mask_no_shareable(const char *cache_type, unsigned long *mask) return -1; if (get_shareable_mask(cache_type, &shareable_mask) < 0) return -1; + if (full_mask == shareable_mask) + shareable_mask = 0; len = count_contiguous_bits(full_mask & ~shareable_mask, &start); if (!len) -- 2.47.3
Powered by blists - more mailing lists