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, 138 insertions, 0 deletions

diff --git a/drivers/media/dvb-frontends/Makefile b/drivers/media/dvb-frontends/Makefile
new file mode 100644
index 000000000..a93146cb4
--- /dev/null
+++ b/drivers/media/dvb-frontends/Makefile
@@ -0,0 +1,138 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Makefile for the kernel DVB frontend device drivers.
+#
+
+ccflags-y += -I$(srctree)/drivers/media/tuners/
+
+# FIXME: RTL2832 SDR driver uses power management directly from USB IF driver
+ifdef CONFIG_DVB_RTL2832_SDR
+	ccflags-y += -I$(srctree)/drivers/media/usb/dvb-usb-v2
+endif
+
+cxd2820r-objs := cxd2820r_core.o cxd2820r_c.o cxd2820r_t.o cxd2820r_t2.o
+drxd-objs := drxd_firm.o drxd_hard.o
+drxk-objs := drxk_hard.o
+stb0899-objs := stb0899_drv.o stb0899_algo.o
+stv0900-objs := stv0900_core.o stv0900_sw.o
+
+# Please keep it alphabetically sorted by Kconfig name
+# (e. g. LC_ALL=C sort Makefile)
+
+obj-$(CONFIG_DVB_A8293) += a8293.o
+obj-$(CONFIG_DVB_AF9013) += af9013.o
+obj-$(CONFIG_DVB_AF9033) += af9033.o
+obj-$(CONFIG_DVB_AS102_FE) += as102_fe.o
+obj-$(CONFIG_DVB_ASCOT2E) += ascot2e.o
+obj-$(CONFIG_DVB_ATBM8830) += atbm8830.o
+obj-$(CONFIG_DVB_AU8522) += au8522_common.o
+obj-$(CONFIG_DVB_AU8522_DTV) += au8522_dig.o
+obj-$(CONFIG_DVB_AU8522_V4L) += au8522_decoder.o
+obj-$(CONFIG_DVB_BCM3510) += bcm3510.o
+obj-$(CONFIG_DVB_CX22700) += cx22700.o
+obj-$(CONFIG_DVB_CX22702) += cx22702.o
+obj-$(CONFIG_DVB_CX24110) += cx24110.o
+obj-$(CONFIG_DVB_CX24116) += cx24116.o
+obj-$(CONFIG_DVB_CX24117) += cx24117.o
+obj-$(CONFIG_DVB_CX24120) += cx24120.o
+obj-$(CONFIG_DVB_CX24123) += cx24123.o
+obj-$(CONFIG_DVB_CXD2099) += cxd2099.o
+obj-$(CONFIG_DVB_CXD2820R) += cxd2820r.o
+obj-$(CONFIG_DVB_CXD2841ER) += cxd2841er.o
+obj-$(CONFIG_DVB_CXD2880) += cxd2880/
+obj-$(CONFIG_DVB_DIB3000MB) += dib3000mb.o
+obj-$(CONFIG_DVB_DIB3000MC) += dib3000mc.o dibx000_common.o
+obj-$(CONFIG_DVB_DIB7000M) += dib7000m.o dibx000_common.o
+obj-$(CONFIG_DVB_DIB7000P) += dib7000p.o dibx000_common.o
+obj-$(CONFIG_DVB_DIB8000) += dib8000.o dibx000_common.o
+obj-$(CONFIG_DVB_DIB9000) += dib9000.o dibx000_common.o
+obj-$(CONFIG_DVB_DRX39XYJ) += drx39xyj/
+obj-$(CONFIG_DVB_DRXD) += drxd.o
+obj-$(CONFIG_DVB_DRXK) += drxk.o
+obj-$(CONFIG_DVB_DS3000) += ds3000.o
+obj-$(CONFIG_DVB_DUMMY_FE) += dvb_dummy_fe.o
+obj-$(CONFIG_DVB_EC100) += ec100.o
+obj-$(CONFIG_DVB_GP8PSK_FE) += gp8psk-fe.o
+obj-$(CONFIG_DVB_HELENE) += helene.o
+obj-$(CONFIG_DVB_HORUS3A) += horus3a.o
+obj-$(CONFIG_DVB_ISL6405) += isl6405.o
+obj-$(CONFIG_DVB_ISL6421) += isl6421.o
+obj-$(CONFIG_DVB_ISL6423) += isl6423.o
+obj-$(CONFIG_DVB_IX2505V) += ix2505v.o
+obj-$(CONFIG_DVB_L64781) += l64781.o
+obj-$(CONFIG_DVB_LG2160) += lg2160.o
+obj-$(CONFIG_DVB_LGDT3305) += lgdt3305.o
+obj-$(CONFIG_DVB_LGDT3306A) += lgdt3306a.o
+obj-$(CONFIG_DVB_LGDT330X) += lgdt330x.o
+obj-$(CONFIG_DVB_LGS8GL5) += lgs8gl5.o
+obj-$(CONFIG_DVB_LGS8GXX) += lgs8gxx.o
+obj-$(CONFIG_DVB_LNBH25) += lnbh25.o
+obj-$(CONFIG_DVB_LNBH29) += lnbh29.o
+obj-$(CONFIG_DVB_LNBP21) += lnbp21.o
+obj-$(CONFIG_DVB_LNBP22) += lnbp22.o
+obj-$(CONFIG_DVB_M88DS3103) += m88ds3103.o
+obj-$(CONFIG_DVB_M88RS2000) += m88rs2000.o
+obj-$(CONFIG_DVB_MB86A16) += mb86a16.o
+obj-$(CONFIG_DVB_MB86A20S) += mb86a20s.o
+obj-$(CONFIG_DVB_MN88443X) += mn88443x.o
+obj-$(CONFIG_DVB_MN88472) += mn88472.o
+obj-$(CONFIG_DVB_MN88473) += mn88473.o
+obj-$(CONFIG_DVB_MT312) += mt312.o
+obj-$(CONFIG_DVB_MT352) += mt352.o
+obj-$(CONFIG_DVB_MXL5XX) += mxl5xx.o
+obj-$(CONFIG_DVB_MXL692) += mxl692.o
+obj-$(CONFIG_DVB_NXT200X) += nxt200x.o
+obj-$(CONFIG_DVB_NXT6000) += nxt6000.o
+obj-$(CONFIG_DVB_OR51132) += or51132.o
+obj-$(CONFIG_DVB_OR51211) += or51211.o
+obj-$(CONFIG_DVB_PLL) += dvb-pll.o
+obj-$(CONFIG_DVB_RTL2830) += rtl2830.o
+obj-$(CONFIG_DVB_RTL2832) += rtl2832.o
+obj-$(CONFIG_DVB_RTL2832_SDR) += rtl2832_sdr.o
+obj-$(CONFIG_DVB_S5H1409) += s5h1409.o
+obj-$(CONFIG_DVB_S5H1411) += s5h1411.o
+obj-$(CONFIG_DVB_S5H1420) += s5h1420.o
+obj-$(CONFIG_DVB_S5H1432) += s5h1432.o
+obj-$(CONFIG_DVB_S921) += s921.o
+obj-$(CONFIG_DVB_SI2165) += si2165.o
+obj-$(CONFIG_DVB_SI2168) += si2168.o
+obj-$(CONFIG_DVB_SI21XX) += si21xx.o
+obj-$(CONFIG_DVB_SP2) += sp2.o
+obj-$(CONFIG_DVB_SP887X) += sp887x.o
+obj-$(CONFIG_DVB_STB0899) += stb0899.o
+obj-$(CONFIG_DVB_STB6000) += stb6000.o
+obj-$(CONFIG_DVB_STB6100) += stb6100.o
+obj-$(CONFIG_DVB_STV0288) += stv0288.o
+obj-$(CONFIG_DVB_STV0297) += stv0297.o
+obj-$(CONFIG_DVB_STV0299) += stv0299.o
+obj-$(CONFIG_DVB_STV0367) += stv0367.o
+obj-$(CONFIG_DVB_STV0900) += stv0900.o
+obj-$(CONFIG_DVB_STV090x) += stv090x.o
+obj-$(CONFIG_DVB_STV0910) += stv0910.o
+obj-$(CONFIG_DVB_STV6110) += stv6110.o
+obj-$(CONFIG_DVB_STV6110x) += stv6110x.o
+obj-$(CONFIG_DVB_STV6111) += stv6111.o
+obj-$(CONFIG_DVB_TC90522) += tc90522.o
+obj-$(CONFIG_DVB_TDA10021) += tda10021.o
+obj-$(CONFIG_DVB_TDA10023) += tda10023.o
+obj-$(CONFIG_DVB_TDA10048) += tda10048.o
+obj-$(CONFIG_DVB_TDA1004X) += tda1004x.o
+obj-$(CONFIG_DVB_TDA10071) += tda10071.o
+obj-$(CONFIG_DVB_TDA10086) += tda10086.o
+obj-$(CONFIG_DVB_TDA18271C2DD) += tda18271c2dd.o
+obj-$(CONFIG_DVB_TDA665x) += tda665x.o
+obj-$(CONFIG_DVB_TDA8083) += tda8083.o
+obj-$(CONFIG_DVB_TDA8261) += tda8261.o
+obj-$(CONFIG_DVB_TDA826X) += tda826x.o
+obj-$(CONFIG_DVB_TS2020) += ts2020.o
+obj-$(CONFIG_DVB_TUA6100) += tua6100.o
+obj-$(CONFIG_DVB_TUNER_CX24113) += cx24113.o
+obj-$(CONFIG_DVB_TUNER_DIB0070) += dib0070.o
+obj-$(CONFIG_DVB_TUNER_DIB0090) += dib0090.o
+obj-$(CONFIG_DVB_TUNER_ITD1000) += itd1000.o
+obj-$(CONFIG_DVB_VES1820) += ves1820.o
+obj-$(CONFIG_DVB_VES1X93) += ves1x93.o
+obj-$(CONFIG_DVB_ZD1301_DEMOD) += zd1301_demod.o
+obj-$(CONFIG_DVB_ZL10036) += zl10036.o
+obj-$(CONFIG_DVB_ZL10039) += zl10039.o
+obj-$(CONFIG_DVB_ZL10353) += zl10353.o