74b61da994
- qemu: Support specifying the cache size presented to guest - hw/core/machine-smp: Initialize caches_bitmap before reading - qapi/qom: Define cache enumeration and properties for machine - linux-aio: fix unbalanced plugged counter in laio_io_unplug() Signed-off-by: Jiabo Feng <fengjiabo1@huawei.com> (cherry picked from commit 5453be865c307703cc43847588fa63ef74ac1ae0)
48 lines
1.7 KiB
Diff
48 lines
1.7 KiB
Diff
From 4f12da5913773e6beba7edd530d85ebe58889c28 Mon Sep 17 00:00:00 2001
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From: huangchengfei <huangchengfei3@huawei.com>
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Date: Fri, 7 Mar 2025 15:51:01 +0800
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Subject: [PATCH] hw/core/machine-smp: Initialize caches_bitmap before reading
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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mainline inclusion
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from mainline-master
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commit 9c2644948c71db61a04f22398cde72224a98267a
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category: feature
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Reference: https://github.com/qemu/qemu/commit/9c2644948c71db61a04f22398cde72224a98267a
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commit 9c2644948c71db61a04f22398cde72224a98267a upstream
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The caches_bitmap is defined in machine_parse_smp_cache(), but it was
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not initialized.
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Initialize caches_bitmap by clearing all its bits to zero.
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Resolves: Coverity CID 1565389
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Fixes: 4e88e7e ("qapi/qom: Define cache enumeration and properties for machine")
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Reported-by: Peter Maydell <peter.maydell@linaro.org>
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Signed-off-by: Zhao Liu <zhao1.liu@intel.com>
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Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
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Link: https://lore.kernel.org/r/20241110150901.130647-2-zhao1.liu@intel.com
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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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---
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hw/core/machine-smp.c | 1 +
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1 file changed, 1 insertion(+)
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diff --git a/hw/core/machine-smp.c b/hw/core/machine-smp.c
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index 9d1aa3afb3..a421a394d4 100644
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--- a/hw/core/machine-smp.c
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+++ b/hw/core/machine-smp.c
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@@ -201,6 +201,7 @@ bool machine_parse_smp_cache(MachineState *ms,
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const SmpCachePropertiesList *node;
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DECLARE_BITMAP(caches_bitmap, CACHE_LEVEL_AND_TYPE__MAX);
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+ bitmap_zero(caches_bitmap, CACHE_LEVEL_AND_TYPE__MAX);
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for (node = caches; node; node = node->next) {
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/* Prohibit users from repeating settings. */
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if (test_bit(node->value->cache, caches_bitmap)) {
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--
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2.41.0.windows.1
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