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Sun, 08 Nov 2026 09:54:13 +0000 (UTC) From: Mohamed Mediouni To: qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org, Mohamed Mediouni , Pedro Barbuda , Peter Maydell , Pierrick Bouvier Subject: [PULL 09/13] target/arm/whpx: handle processor reset Date: Sun, 8 Nov 2026 02:53:59 -0700 Message-ID: <20261108095403.70813-10-mohamed@unpredictable.fr> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20261108095403.70813-1-mohamed@unpredictable.fr> References: <20261108095403.70813-1-mohamed@unpredictable.fr> X-Archived-By: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Proofpoint-GUID: Zn6bl-RxyLvFymU4LsrV4YRVzAu14g7m X-Authority-Info-Out: v=2.4 cv=K60v3iWI c=1 sm=1 tr=0 ts=6af046c8 cx=c_apl:c_pps:t_out a=oyWFxbOnq+dmhQrAPgaJYA==:117 a=oyWFxbOnq+dmhQrAPgaJYA==:17 a=zJRp6_cAMcgA:10 a=VkNPw1HP01LnGYTKEx00:22 a=loPyruWHUH_f1C729x8A:9 X-Proofpoint-ORIG-GUID: Zn6bl-RxyLvFymU4LsrV4YRVzAu14g7m X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMTA4MDAzOSBTYWx0ZWRfX3MOk0sJt/4o8 Fat1qizeLrIs8IpcyDF8cCGzgakeRTZtJwRSbsnv/wJy8o91Tz3KY3CaxZUk9AmeQHsqq6xbFDE NmW04t/Uakol5wim/skQIj3k6RaiuGzIjSOnd0lXW5qlQAUA+Hp2tSwXZL86z4/vcwtabEqUgsW UTQfg8FZ6iVUak9Y2S7aPa15kZ9864gkx/qaV7nPfTC+WTlUI4qhM4JwXpu4JuVubOpbKjeRU4r 8+nJFoXnMm867ZBvlL+J56l12g3V3nUzTvw0nKYe0Lc+Vgz5IIHWy3Tt2N734S5yz4yh05kRTHE oF9Ot/Q9Wvm9KxFxk3EB5yPbKHFHXHIORdX4lW6bepyt2XwdT60BlvaVGp8nbs= X-JNJ: AAAAAAAB3/2PySQ5LpzXSkDt9Rx19MNSkHTAXZe9kq78WHGCvVfaKgpKOAYUtv5HjuA/wY 183+iUIkHHKKa2ud8JsL9loXnj6qG+ijQPFidCzeK9uGFGjZSo44uc7rtpOsxaXa+BY1q2 cJP0WNMC1Sa57zjou5oRGP5Ey9j/tUUbx/RSo9byxT62R4BZcDGHxHumZwU7t/Rd7L3Evi MA9awvoY+S7r7vpPJryoJCHGWO5X/Rtk3++aMOEhD6kJrQK2MIzwAUMSF/NKs5I6j+CFgn 2ur0Tk9nBDYfw05RhsBY5f/G6+PkOUOow1iEMG+G0HumM8NYBwfIzPrxqsFYZ3cPycEmpj VRDe1JYge2JpdxYTposcsQOG0urclQw5IqS4U1JptvCaiJoTllAvsUGh5okRYSKj9q5WOp 7RSMwFmS2SlFSE3DhTBVjbY2xAVbhsvLJ1rHGvgTImcqmnXSoesVaCLW2KtuCJNc+rOpl+ BEqbZ8ZSBpV1xKjRobNTAMpepET4I4ID+XgLvlu1yWg40sLtfH6y0wQUJ6Wy/renDLTHob pz3o2EUYKuRNiL1EMDD16hgv8o+LUBDmKK6TNFhfFD4rBdDhaa51oqVn00Gb6SfWYfH0UE VtgpoHxf3xQ5ZyOsRf3JO+gAVg5/1tyWpbmNSt2bqbunpbd9RnG8VOI4As1QCouXQbIuVK psh9YYYrJoCadIgry/5hvC9S1c1vGgqVzzN0h9Bz8k1vy7dE9ErZgXnxYFrvZDHqEHjBg2 FSBU1oHRJk6mCVQmPlIxtP Received-SPF: pass client-ip=2a01:b747:3001:201::6; 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Signed-off-by: Mohamed Mediouni --- target/arm/whpx/whpx-all.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/target/arm/whpx/whpx-all.c b/target/arm/whpx/whpx-all.c index 46f0b9524e..150a6326d7 100644 --- a/target/arm/whpx/whpx-all.c +++ b/target/arm/whpx/whpx-all.c @@ -471,8 +471,6 @@ int whpx_vcpu_run(CPUState *cpu) if (arm_cpu->power_state != PSCI_OFF) { whpx_psci_cpu_off(arm_cpu); } - /* Partition-wide reset, to reset state for reboots to succeed. */ - whp_dispatch.WHvResetPartition(whpx->partition); bql_unlock(); break; case WHvRunVpExitReasonNone: @@ -573,6 +571,14 @@ void whpx_set_registers(CPUState *cpu, WHPXStateLevel level) assert(cpu_is_stopped(cpu) || qemu_cpu_is_self(cpu)); + /* Assumes that cpu_synchronize_all_post_reset() runs cpu 0 first. */ + if (level == WHPX_LEVEL_RESET_STATE && cpu->cpu_index == 0) { + hr = whp_dispatch.WHvResetPartition(whpx->partition); + if (FAILED(hr)) { + error_report("WHPX: Failed to reset partition, hr=%08lx", hr); + } + } + for (i = 0; i < ARRAY_SIZE(whpx_reg_match); i++) { val.Reg64 = *(uint64_t *)((char *)env + whpx_reg_match[i].offset); whpx_set_reg(cpu, whpx_reg_match[i].reg, val); -- 2.54.0 (Apple Git-157)