Re: [PATCH v17 04/13] x86/hw_breakpoints: Add arch_modify_local_hw_breakpoint_addr() API
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From: sashiko-bot@kernel.org
Date: 2026-09-22 04:39:07
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kvm, linux-perf-users
From: Jinchao Wang <redacted> Wprobe needs to move an active per-CPU watchpoint without releasing and reserving its hardware slot. Add arch_modify_local_hw_breakpoint_addr() as the architecture backend for modify_local_hw_breakpoint_addr(). It validates the new address, finds the installed local slot, and updates the hardware debug register and per-CPU shadow register. The core layer (modify_local_hw_breakpoint_addr()) handles updating bp->attr.bp_addr and counter_arch_bp(bp)->address. The caller must provide an installed local event and a valid address. Slot ownership, breakpoint type, length, mask and DR7 remain unchanged. Link: https://lore.kernel.org/all/59637b96946653393a7ad3c7de094094796b39c2.1785067572.git.wangjinchao600@gmail.com/ (local) Assisted-by: Antigravity:gemini-3.8-flash Signed-off-by: Jinchao Wang <redacted> Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Sashiko has reviewed this patch and found no issues. It looks great! -- Sashiko AI review · https://sashiko.dev/#/patchset/179005108298.388919.4535333252892590932.stgit@devnote2?part=4