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From fb4e8466ec0adc6e0aee55ab34e60e88d365d5de Mon Sep 17 00:00:00 2001
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Message-Id: <fb4e8466ec0adc6e0aee55ab34e60e88d365d5de@dist-git>
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From: Andrea Bolognani <abologna@redhat.com>
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Date: Wed, 15 Aug 2018 14:04:43 +0200
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Subject: [PATCH] utils: Remove arbitrary limit on socket_id/core_id
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While in most cases the values are going to be much
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smaller than our arbitrary 4096 limit, there is really
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no guarantee that would be the case: in fact, a few
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aarch64 servers have been spotted in the wild with
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core_id as high as 6216.
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Take advantage of virBitmap's ability to automatically
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alter its size at runtime to accomodate such values.
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Signed-off-by: Andrea Bolognani <abologna@redhat.com>
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(cherry picked from commit ba35ac2ebbc7f94abc50ffbf1d681458e2406444)
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https://bugzilla.redhat.com/show_bug.cgi?id=1608479
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Signed-off-by: Andrea Bolognani <abologna@redhat.com>
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Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
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---
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src/util/virhostcpu.c | 23 ++++-------------------
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1 file changed, 4 insertions(+), 19 deletions(-)
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diff --git a/src/util/virhostcpu.c b/src/util/virhostcpu.c
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index b644398e00..1e31be5900 100644
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--- a/src/util/virhostcpu.c
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+++ b/src/util/virhostcpu.c
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@@ -294,9 +294,6 @@ virHostCPUParseNode(const char *node,
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int *threads,
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int *offline)
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{
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- /* Biggest value we can expect to be used as either socket id
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- * or core id. Bitmaps will need to be sized accordingly */
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- const int ID_MAX = 4095;
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int ret = -1;
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int processors = 0;
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DIR *cpudir = NULL;
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@@ -325,7 +322,7 @@ virHostCPUParseNode(const char *node,
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goto cleanup;
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/* enumerate sockets in the node */
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- if (!(sockets_map = virBitmapNew(ID_MAX + 1)))
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+ if (!(sockets_map = virBitmapNewEmpty()))
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goto cleanup;
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while ((direrr = virDirRead(cpudir, &cpudirent, node)) > 0) {
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@@ -344,14 +341,8 @@ virHostCPUParseNode(const char *node,
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if (virHostCPUGetSocket(cpu, &sock) < 0)
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goto cleanup;
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- if (sock > ID_MAX) {
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- virReportError(VIR_ERR_INTERNAL_ERROR,
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- _("Socket %d can't be handled (max socket is %d)"),
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- sock, ID_MAX);
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- goto cleanup;
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- }
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- if (virBitmapSetBit(sockets_map, sock) < 0)
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+ if (virBitmapSetBitExpand(sockets_map, sock) < 0)
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goto cleanup;
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if (sock > sock_max)
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@@ -368,7 +359,7 @@ virHostCPUParseNode(const char *node,
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goto cleanup;
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for (i = 0; i < sock_max; i++)
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- if (!(cores_maps[i] = virBitmapNew(ID_MAX + 1)))
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+ if (!(cores_maps[i] = virBitmapNewEmpty()))
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goto cleanup;
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/* Iterate over all CPUs in the node, in ascending order */
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@@ -412,14 +403,8 @@ virHostCPUParseNode(const char *node,
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if (virHostCPUGetCore(cpu, &core) < 0)
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goto cleanup;
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}
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- if (core > ID_MAX) {
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- virReportError(VIR_ERR_INTERNAL_ERROR,
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- _("Core %d can't be handled (max core is %d)"),
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- core, ID_MAX);
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- goto cleanup;
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- }
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- if (virBitmapSetBit(cores_maps[sock], core) < 0)
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+ if (virBitmapSetBitExpand(cores_maps[sock], core) < 0)
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goto cleanup;
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if (!(siblings = virHostCPUCountThreadSiblings(cpu)))
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--
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2.18.0
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