Zhenhua Huang 558b8ee45f mm,kfence: decouple kfence from page granularity mapping judgement ... [ Upstream commit bfa7965b33 ] Kfence only needs its pool to be mapped as page granularity, if it is inited early. Previous judgement was a bit over protected. From [1], Mark suggested to "just map the KFENCE region a page granularity". So I decouple it from judgement and do page granularity mapping for kfence pool only. Need to be noticed that late init of kfence pool still requires page granularity mapping. Page granularity mapping in theory cost more(2M per 1GB) memory on arm64 platform. Like what I've tested on QEMU(emulated 1GB RAM) with gki_defconfig, also turning off rodata protection: Before: [root@liebao ]# cat /proc/meminfo MemTotal: 999484 kB After: [root@liebao ]# cat /proc/meminfo MemTotal: 1001480 kB To implement this, also relocate the kfence pool allocation before the linear mapping setting up, arm64_kfence_alloc_pool is to allocate phys addr, __kfence_pool is to be set after linear mapping set up. LINK: [1] https://lore.kernel.org/linux-arm-kernel/Y+IsdrvDNILA59UN@FVFF77S0Q05N/ Suggested-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Zhenhua Huang <quic_zhenhuah@quicinc.com> Reviewed-by: Kefeng Wang <wangkefeng.wang@huawei.com> Reviewed-by: Marco Elver <elver@google.com> Link: https://lore.kernel.org/r/1679066974-690-1-git-send-email-quic_zhenhuah@quicinc.com Signed-off-by: Will Deacon <will@kernel.org> Stable-dep-of: acfa60dbe038 ("arm64: mm: Fix "rodata=on" when CONFIG_RODATA_FULL_DEFAULT_ENABLED=y") Signed-off-by: Sasha Levin <sashal@kernel.org>		2023-12-03 07:32:08 +01:00
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alpha	…
arc	ARC: atomics: Add compiler barrier to atomic operations...	2023-09-19 12:28:04 +02:00
arm	arm/xen: fix xen_vcpu_info allocation alignment	2023-12-03 07:32:08 +01:00
arm64	mm,kfence: decouple kfence from page granularity mapping judgement	2023-12-03 07:32:08 +01:00
csky	…
hexagon	…
ia64	…
loongarch	LoongArch: Mark __percpu functions as always inline	2023-11-28 17:07:19 +00:00
m68k	m68k: Fix invalid .section syntax	2023-09-13 09:42:21 +02:00
microblaze	…
mips	MIPS: Alchemy: only build mmc support helpers if au1xmmc is enabled	2023-10-06 14:56:45 +02:00
nios2	…
openrisc	…
parisc	parisc/pgtable: Do not drop upper 5 address bits of physical address	2023-11-28 17:07:14 +00:00
powerpc	powerpc/powernv: Fix fortify source warnings in opal-prd.c	2023-11-28 17:07:23 +00:00
riscv	RISC-V: drop error print from riscv_hartid_to_cpuid()	2023-11-28 17:07:23 +00:00
s390	s390/cmma: fix detection of DAT pages	2023-11-28 17:07:14 +00:00
sh	sh: bios: Revive earlyprintk support	2023-11-20 11:52:07 +01:00
sparc	sparc32: fix a braino in fault handling in csum_and_copy_..._user()	2023-11-02 09:35:32 +01:00
um	um: Fix hostaudio build errors	2023-09-13 09:42:58 +02:00
x86	KVM: x86: Clear bit12 of ICR after APIC-write VM-exit	2023-11-28 17:07:08 +00:00
xtensa	xtensa: boot/lib: fix function prototypes	2023-10-06 14:56:49 +02:00
.gitignore	…
Kconfig	…