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Mon, 24 Nov 2025 17:04:51 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id AD4B8C4CEF1; Mon, 24 Nov 2025 17:04:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1764003891; bh=S8Qrg4iC2yFDCaP1xktH5LChT86VwXzFCdOf6j/SW90=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=ozLhTwisGPVHdVMpnBmWnfSEk1gY7IbGb+GqIiObQDXU+pzI+npScjcyDVTnzlycS +na6JWOBGQBDkjXx31M2mCjS4xtDIsNTf5arVXUzgs41Dm6VoKrSsAeTMyg8OVGLJ8 Xbw+aj+Kfz49W4fztQ9xGzfoPzmHVcZ7L64kwJZk= Date: Mon, 24 Nov 2025 18:04:48 +0100 From: Greg KH To: Shrikanth Hegde Cc: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, mingo@redhat.com, peterz@infradead.org, juri.lelli@redhat.com, vincent.guittot@linaro.org, tglx@linutronix.de, yury.norov@gmail.com, maddy@linux.ibm.com, srikar@linux.ibm.com, pbonzini@redhat.com, seanjc@google.com, kprateek.nayak@amd.com, vschneid@redhat.com, iii@linux.ibm.com, huschle@linux.ibm.com, rostedt@goodmis.org, dietmar.eggemann@arm.com, christophe.leroy@csgroup.eu Subject: Re: [PATCH 16/17] sysfs: Provide write method for paravirt Message-ID: <2025112409-rockstar-shortcake-1892@gregkh> References: <20251119124449.1149616-1-sshegde@linux.ibm.com> <20251119124449.1149616-17-sshegde@linux.ibm.com> X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20251119124449.1149616-17-sshegde@linux.ibm.com> On Wed, Nov 19, 2025 at 06:14:48PM +0530, Shrikanth Hegde wrote: > This is a debug patch which could be used to set the range of CPUs as > paravirt. > > One could make use of this for quick testing of this infra instead of writing > arch specific code. This allows checking some corner cases by providing custom > cpumasks which isn't possible with arch method. > > echo 100-200,600-700 > /sys/devices/system/cpu/paravirt > cat /sys/devices/system/cpu/paravirt > 100-200,600-700 > > echo > /sys/devices/system/cpu/paravirt > cat /sys/devices/system/cpu/paravirt > > Signed-off-by: Shrikanth Hegde > --- > This is currently not meant be merged, since paravirt sysfs file is meant > to be Read-Only. Hence the documentation hasn't changed. If this method is > really helpful, then can consider including it depending on the > discussion. As you added this to this series, if it is picked up, it WILL be merged :( Please try a "Nacked-by:" or something else to keep patches from being applied. Or better yet, send them as a totally separate series. thanks, greg k-h