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1af5a81099
There are two main use cases for mmu notifiers. One is by KVM which uses mmu_notifier_invalidate_range_start()/end() to manage a software TLB. The other is to manage hardware TLBs which need to use the invalidate_range() callback because HW can establish new TLB entries at any time. Hence using start/end() can lead to memory corruption as these callbacks happen too soon/late during page unmap. mmu notifier users should therefore either use the start()/end() callbacks or the invalidate_range() callbacks. To make this usage clearer rename the invalidate_range() callback to arch_invalidate_secondary_tlbs() and update documention. Link: https://lkml.kernel.org/r/6f77248cd25545c8020a54b4e567e8b72be4dca1.1690292440.git-series.apopple@nvidia.com Signed-off-by: Alistair Popple <apopple@nvidia.com> Suggested-by: Jason Gunthorpe <jgg@nvidia.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Cc: Andrew Donnellan <ajd@linux.ibm.com> Cc: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com> Cc: Frederic Barrat <fbarrat@linux.ibm.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Kevin Tian <kevin.tian@intel.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Nicolin Chen <nicolinc@nvidia.com> Cc: Robin Murphy <robin.murphy@arm.com> Cc: Sean Christopherson <seanjc@google.com> Cc: SeongJae Park <sj@kernel.org> Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com> Cc: Will Deacon <will@kernel.org> Cc: Zhi Wang <zhi.wang.linux@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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altera-stapl | ||
bcm-vk | ||
c2port | ||
cardreader | ||
cb710 | ||
cxl | ||
echo | ||
eeprom | ||
genwqe | ||
ibmasm | ||
lis3lv02d | ||
lkdtm | ||
mchp_pci1xxxx | ||
mei | ||
ocxl | ||
pvpanic | ||
sgi-gru | ||
sgi-xp | ||
ti-st | ||
uacce | ||
vmw_vmci | ||
ad525x_dpot-i2c.c | ||
ad525x_dpot-spi.c | ||
ad525x_dpot.c | ||
ad525x_dpot.h | ||
apds990x.c | ||
apds9802als.c | ||
atmel-ssc.c | ||
bh1770glc.c | ||
cs5535-mfgpt.c | ||
ds1682.c | ||
dummy-irq.c | ||
dw-xdata-pcie.c | ||
enclosure.c | ||
fastrpc.c | ||
gehc-achc.c | ||
hi6421v600-irq.c | ||
hisi_hikey_usb.c | ||
hmc6352.c | ||
hpilo.c | ||
hpilo.h | ||
ibmvmc.c | ||
ibmvmc.h | ||
ics932s401.c | ||
isl29003.c | ||
isl29020.c | ||
Kconfig | ||
kgdbts.c | ||
lattice-ecp3-config.c | ||
Makefile | ||
open-dice.c | ||
pch_phub.c | ||
pci_endpoint_test.c | ||
phantom.c | ||
qcom-coincell.c | ||
smpro-errmon.c | ||
smpro-misc.c | ||
sram-exec.c | ||
sram.c | ||
sram.h | ||
tifm_7xx1.c | ||
tifm_core.c | ||
tps6594-esm.c | ||
tps6594-pfsm.c | ||
tsl2550.c | ||
vcpu_stall_detector.c | ||
vmw_balloon.c | ||
xilinx_sdfec.c | ||
xilinx_tmr_inject.c | ||
xilinx_tmr_manager.c |