From: Martin Kletzander Date: Mon, 16 Sep 2024 08:28:03 +0000 (+0200) Subject: resctrl: Do not rewrite default MB values for new allocations X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=4b68c7e55beb7a5151481293472769c798d3ada8;p=libvirt.git resctrl: Do not rewrite default MB values for new allocations The code did it "just in case" the allocation was not reset for new subdirectories. That might've happened in the past with CAT settings, but checking it now it is properly reset to its maximum values for each new CLOSID (Class of Service ID). The advantage of this is that we do not rewrite the value with itself which causes an issue with the current linux kernel and mba_MBps option where the default is UINT_MAX (or (uint32_t) -1), but gets rounded up to bandwidth granularity (10), overflows and small number (4) is set instead. Signed-off-by: Martin Kletzander Reviewed-by: Michal Privoznik --- diff --git a/src/util/virresctrl.c b/src/util/virresctrl.c index c126ec7e41..8f33a85a56 100644 --- a/src/util/virresctrl.c +++ b/src/util/virresctrl.c @@ -2158,9 +2158,6 @@ virResctrlAllocAssign(virResctrlInfo *resctrl, if (virResctrlAllocCopyMasks(alloc, alloc_default) < 0) return -1; - if (virResctrlAllocCopyMemBW(alloc, alloc_default) < 0) - return -1; - for (level = 0; level < alloc->nlevels; level++) { virResctrlAllocPerLevel *a_level = alloc->levels[level]; virResctrlAllocPerLevel *f_level = NULL;