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[PW_SID:1146017] KVM: riscv: Avoid overwriting existing G-stage tables with huge leaves - #2473

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[PW_SID:1146017] KVM: riscv: Avoid overwriting existing G-stage tables with huge leaves#2473
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@linux-riscv-bot linux-riscv-bot commented Aug 14, 2026

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PR for series 1146017 applied to workflow__riscv__fixes

Name: KVM: riscv: Avoid overwriting existing G-stage tables with huge leaves
URL: https://patchwork.kernel.org/project/linux-riscv/list/?series=1146017
Version: 1

Linux RISC-V bot and others added 2 commits August 8, 2026 18:30
Linux RISC-V bot
Adding CI files
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Jinyu Tang Linux RISC-V bot
KVM: riscv: Avoid overwriting existing G-stage tables with huge leaves
293554c 
RISC-V KVM can overwrite an existing G-stage table entry when installing
a huge leaf mapping. If the target huge range already has a lower-level
page table, kvm_riscv_gstage_set_pte() can replace the non-leaf entry
with a leaf PTE. This disconnects the lower-level page table and can
change guest-visible mappings or leak the page-table page.

Reject replacing a valid non-leaf PTE with a leaf PTE. If huge-page
installation hits such a conflict, fall back to a 4K mapping for the
faulting GPA and leave the existing page-table structure intact.

Suggested-by: Sashiko <sashiko-bot@kernel.org>
Fixes: 9d05c1f ("RISC-V: KVM: Implement stage2 page table programming")
Signed-off-by: Jinyu Tang <jinyu.tang@linux.dev>
Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>
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linux-riscv-bot force-pushed the workflow__riscv__fixes branch 2 times, most recently from 3c76238 to 492cc66 Compare August 14, 2026 21:24
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Patch 1: "KVM: riscv: Avoid overwriting existing G-stage tables with huge leaves"
build-rv32-defconfig
Desc: Builds riscv32 defconfig
Duration: 143.50 seconds
Result: PASS

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Patch 1: "KVM: riscv: Avoid overwriting existing G-stage tables with huge leaves"
build-rv64-clang-allmodconfig
Desc: Builds riscv64 allmodconfig with Clang, and checks for errors and added warnings
Duration: 1130.94 seconds
Result: PASS

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linux-riscv-bot commented Aug 14, 2026

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Patch 1: "KVM: riscv: Avoid overwriting existing G-stage tables with huge leaves"
build-rv64-gcc-allmodconfig
Desc: Builds riscv64 allmodconfig with GCC, and checks for errors and added warnings
Duration: 1461.18 seconds
Result: PASS

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linux-riscv-bot commented Aug 14, 2026

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Patch 1: "KVM: riscv: Avoid overwriting existing G-stage tables with huge leaves"
build-rv64-nommu-k210-defconfig
Desc: Builds riscv64 defconfig with NOMMU for K210
Duration: 26.82 seconds
Result: PASS

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Patch 1: "KVM: riscv: Avoid overwriting existing G-stage tables with huge leaves"
build-rv64-nommu-k210-virt
Desc: Builds riscv64 defconfig with NOMMU for the virt platform
Duration: 27.83 seconds
Result: PASS

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linux-riscv-bot commented Aug 14, 2026

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Patch 1: "KVM: riscv: Avoid overwriting existing G-stage tables with huge leaves"
checkpatch
Desc: Runs checkpatch.pl on the patch
Duration: 0.82 seconds
Result: PASS

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linux-riscv-bot commented Aug 14, 2026

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Patch 1: "KVM: riscv: Avoid overwriting existing G-stage tables with huge leaves"
dtb-warn-rv64
Desc: Checks for Device Tree warnings/errors
Duration: 88.38 seconds
Result: PASS

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linux-riscv-bot commented Aug 14, 2026

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Patch 1: "KVM: riscv: Avoid overwriting existing G-stage tables with huge leaves"
header-inline
Desc: Detects static functions without inline keyword in header files
Duration: 0.23 seconds
Result: PASS

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linux-riscv-bot commented Aug 14, 2026

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Patch 1: "KVM: riscv: Avoid overwriting existing G-stage tables with huge leaves"
kdoc
Desc: Detects for kdoc errors
Duration: 0.89 seconds
Result: PASS

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Patch 1: "KVM: riscv: Avoid overwriting existing G-stage tables with huge leaves"
module-param
Desc: Detect module_param changes
Duration: 0.25 seconds
Result: PASS

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Patch 1: "KVM: riscv: Avoid overwriting existing G-stage tables with huge leaves"
verify-fixes
Desc: Verifies that the Fixes: tags exist
Duration: 0.28 seconds
Result: PASS

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Patch 1: "KVM: riscv: Avoid overwriting existing G-stage tables with huge leaves"
verify-signedoff
Desc: Verifies that Signed-off-by: tags are correct
Duration: 0.30 seconds
Result: PASS

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linux-riscv-bot force-pushed the workflow__riscv__fixes branch 2 times, most recently from bb1a926 to 6f6f7c0 Compare August 21, 2026 03:35
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linux-riscv-bot deleted the pw1146017 branch August 22, 2026 02:16
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