Module Name: src
Committed By: martin
Date: Mon Nov 18 18:07:35 UTC 2024
Modified Files:
src/sys/arch/x86/x86 [netbsd-10]: pmap.c
Log Message:
Pull up following revision(s) (requested by riastradh in ticket #1008):
sys/arch/x86/x86/pmap.c: revision 1.427
x86/pmap: Use UVM_KMF_WAITVA to ensure pmap_pdp_alloc never fails.
This is used as the backing page allocator for pmap_pdp_pool, and
pmap_ctor assumes that PR_WAITOK allocations from it don't fail and
unconditionally writes to the resulting kva, which if null leads
nowhere good.
It is unclear to me why uvm_km_alloc can accept any combination of
the options UVM_KMF_NOWAIT and UVM_KMF_WAITVA. It seems to me that
at least one should be required (and they should be exclusive), and
any other use should trip an assertion.
PR kern/58666: panic: lock error: Reader / writer lock:
rw_vector_enter,357: locking against myself
To generate a diff of this commit:
cvs rdiff -u -r1.423 -r1.423.4.1 src/sys/arch/x86/x86/pmap.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
