KVM: Don't pre-reserve xarray entries when storing empty/NULL attributesgrafted

Skip the xarray reservation loop when clearing all memory attributes, as
storing NULL only erases the entry and never needs to allocate, so no
reservation (and no cleanup of a failed one) is required in that case.

Suggested-by: Sean Christopherson <seanjc@google.com>
Cc: David Ballesteros <davimaba.v@proton.me>
Signed-off-by: Zeng Chi <zengchi@kylinos.cn>
Link: https://patch.msgid.link/20260921102442.1232375-1-zeng_chi911@163.com
[sean: split to separate patch]
Signed-off-by: Sean Christopherson <seanjc@google.com>

1 files changed, 23 insertions, 0 deletions

diff --git a/drivers/thermal/st/Kconfig b/drivers/thermal/st/Kconfig
new file mode 100644
index 000000000..ecbdf4ef0
--- /dev/null
+++ b/drivers/thermal/st/Kconfig
@@ -0,0 +1,23 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# STMicroelectronics thermal drivers configuration
+#
+
+config ST_THERMAL
+	tristate "Thermal sensors on STMicroelectronics STi series of SoCs"
+	help
+	  Support for thermal sensors on STMicroelectronics STi series of SoCs.
+
+config ST_THERMAL_MEMMAP
+	select ST_THERMAL
+	tristate "STi series memory mapped access based thermal sensors"
+
+config STM32_THERMAL
+	tristate "Thermal framework support on STMicroelectronics STM32 series of SoCs"
+	depends on MACH_STM32MP157
+	default y
+	help
+	  Support for thermal framework on STMicroelectronics STM32 series of
+	  SoCs. This thermal driver allows to access to general thermal framework
+	  functionalities and to access to SoC sensor functionalities. This
+	  configuration is fully dependent of MACH_STM32MP157.