Re: [patch V2 00/46] x86, PCI, XEN, genirq ...: Prepare for device MSI

Hi Thomas, On Wed, Aug 26, 2020 at 01:16:28PM +0200, Thomas Gleixner wrote: [...] > > The whole lot is also available from git: > >git://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git device-msi > > This has been tested on Intel/AMD/KVM but lacks testing on: > > - HYPERV

Re: [patch RFC 10/38] x86/ioapic: Consolidate IOAPIC allocation

Hi Thomas, I hit a compiler error while I was trying to compile this patchset: arch/x86/kernel/devicetree.c: In function ‘dt_irqdomain_alloc’: arch/x86/kernel/devicetree.c:232:6: error: ‘struct irq_alloc_info’ has no member named ‘ioapic_id’; did you mean ‘ioapic’? 232 | tmp.ioapic_id =

Re: [Xen-devel] [RFC 0/6] vDSO support for Hyper-V guest on ARM64

On Fri, Jan 24, 2020 at 10:24:44AM +, Vincenzo Frascino wrote: > Hi Boqun Feng, > > On 24/01/2020 06:32, Boqun Feng wrote: > > Hi Vincenzo, > > > > [...] > > >> > >> I had a look to your patches and overall, I could not understand why we &

Re: [Xen-devel] [RFC 0/6] vDSO support for Hyper-V guest on ARM64

Hi Vincenzo, On Thu, Jan 23, 2020 at 10:48:07AM +, Vincenzo Frascino wrote: > Hi Boqun Feng, > > sorry for the late reply. > That's OK, thanks for your review ;-) > On 16/12/2019 00:19, Boqun Feng wrote: > > Hi, > > > > This is the RFC patchset for vD

Re: [Xen-devel] [RFC 6/6] arm64: hyperv: Enable vDSO

On Tue, Dec 17, 2019 at 03:10:16PM +0100, Vitaly Kuznetsov wrote: > Boqun Feng writes: > > > Similar to x86, add a new vclock_mode VCLOCK_HVCLOCK, and reuse the > > hv_read_tsc_page() for userspace to read tsc page clocksource. > > > > Signed-off-by: Boqun Feng

[Xen-devel] [RFC 5/6] arm64: hyperv: Enable userspace to read cntvct

Since reading hyperv-timer clocksource requires reading cntvct, userspace should be allowed to read it, otherwise reading cntvct will result in traps, which makes vsyscall's cost similar compared to syscall's. So enable it on every cpu when a Hyper-V guest booting up. Signed-off-by: Boqun Feng

[Xen-devel] [RFC 0/6] vDSO support for Hyper-V guest on ARM64

Hi, This is the RFC patchset for vDSO support in ARM64 Hyper-V guest. To test it, Michael's ARM64 support patchset: https://lore.kernel.org/linux-arm-kernel/1570129355-16005-1-git-send-email-mikel...@microsoft.com/ is needed. Similar as x86, Hyper-V on ARM64 use a TSC page for guests

[Xen-devel] [RFC 6/6] arm64: hyperv: Enable vDSO

Similar to x86, add a new vclock_mode VCLOCK_HVCLOCK, and reuse the hv_read_tsc_page() for userspace to read tsc page clocksource. Signed-off-by: Boqun Feng (Microsoft) --- arch/arm64/include/asm/clocksource.h | 3 ++- arch/arm64/include/asm/mshyperv.h | 2 +- arch/arm64

[Xen-devel] [RFC 4/6] arm64: vdso: hyperv: Map tsc page into vDSO if enabled

set-up in __vdso_init() to do this. Note: if HYPERV_TIMER=y but the kernel is using other clocksource or doesn't have the hyperv timer clocksource, tsc page will still be mapped into userspace. Signed-off-by: Boqun Feng (Microsoft) --- arch/arm64/kernel/vdso.c | 12 arch

[Xen-devel] [RFC 2/6] arm64: vdso: Add support for multiple vDSO data pages

at userspace need to be adjusted with some data from a page maintained by the hypervisor. For example, the TSC page in Hyper-V. This is a prerequisite for vDSO support in ARM64 on Hyper-V. Signed-off-by: Boqun Feng (Microsoft) --- arch/arm64/kernel/vdso.c | 43 1

[Xen-devel] [RFC 3/6] arm/arm64: clocksource: Introduce vclock_mode

driver and require arch_clocksource_data having the same field. Signed-off-by: Boqun Feng (Microsoft) --- arch/arm/include/asm/clocksource.h| 6 +- arch/arm/kernel/vdso.c| 1 - arch/arm64/include/asm/clocksource.h | 6 +- arch/arm64

[Xen-devel] [RFC 1/6] arm64: hyperv: Allow hv_get_raw_timer() definition to be overridden

initialized (using a kernel address) by the arch timer driver, therefore not usable in vDSO. Fix this by allowing a previous definition to override the default one, so that in vDSO code, we can define it as a function callable in userspace. Signed-off-by: Boqun Feng (Microsoft) --- arch/arm64

Re: [Xen-devel] [RFC PATCH v2 00/17] RFC: SGX Virtualization design and draft patches

On Mon, Dec 04, 2017 at 08:15:11AM +0800, Boqun Feng wrote: > Hi all, > > This is the v2 of RFC SGX Virtualization design and draft patches, you Ping ;-) Any comments? Regards, Boqun > can find v1 at: > > https://lists.gt.net/xen/devel/483404 > > In the new ver

[Xen-devel] [PATCH v2 16/17] xen: tools: add SGX to applying CPUID policy

From: Kai Huang In libxc, a new structure 'xc_cpuid_policy_build_info_t' is added to carry domain's EPC base and size info from libxl. libxl_cpuid_apply_policy is also changed to take 'libxl_domain_build_info_t' as parameter, where domain's EPC base and size can be got

[Xen-devel] [PATCH v2 17/17] xen: tools: add SGX to applying MSR policy

with its value, and later on the vcpu's virtual IA32_SGXLEPUBKEYHASHn will be set with the same value. If the physical IA32_SGXLEPUBKEYHASHn MSRs are not writable, using 'lehash' or 'lewr' parameter results in domain creation failure. Signed-off-by: Boqun Feng <boqun.f...@intel.com> --- tools

[Xen-devel] [PATCH v2 11/17] xen: vmx: handle SGX related MSRs

cache the recent IA32_SGXLEPUBKEYHASHn in a percpu variable, so that we won't need to update with wrmsr if the value not changed. Signed-off-by: Kai Huang <kai.hu...@linux.intel.com> Signed-off-by: Boqun Feng <boqun.f...@intel.com> --- xen/arch/x86/domctl.c| 28 - xe

[Xen-devel] [PATCH v2 04/17] xen: x86/mm: introduce ioremap_wb()

ed-off-by: Kai Huang <kai.hu...@linux.intel.com> Signed-off-by: Boqun Feng <boqun.f...@intel.com> --- xen/arch/x86/mm.c| 9 +++-- xen/include/asm-x86/mm.h | 7 +++ 2 files changed, 14 insertions(+), 2 deletions(-) diff --git a/xen/arch/x86/mm.c b/xen/arch/x86/mm.c

[Xen-devel] [PATCH v2 12/17] xen: vmx: handle ENCLS VMEXIT

From: Kai Huang Currently EPC are statically allocated and mapped to guest, we don't have to trap ENCLS as it runs perfectly in VMX non-root mode. But exposing SGX to guest means we also expose ENABLE_ENCLS bit to L1 hypervisor, therefore we cannot stop L1 from

[Xen-devel] [PATCH v2 08/17] xen: x86/mm: add SGX EPC management

need to do is to populate the portion of EPC pages in the 'frame_table' and set up the mapping properly. SGX would be disabled, if EPC initialization found any problem. Signed-off-by: Boqun Feng <boqun.f...@intel.com> --- xen/arch/x86/sgx.c

[Xen-devel] [PATCH v2 05/17] xen: p2m: new 'p2m_epc' type for EPC mapping

From: Kai Huang A new 'p2m_epc' type is added for EPC mapping type. Two wrapper functions set_epc_p2m_entry and clear_epc_p2m_entry are also added for further use. Signed-off-by: Kai Huang --- xen/arch/x86/mm/p2m-ept.c | 3 +++

[Xen-devel] [RFC PATCH v2 00/17] RFC: SGX Virtualization design and draft patches

https://01.org/intel-software-guard-extensions - Linux SGX driver for upstreaming https://github.com/01org/linux-sgx - Intel SGX Specification (SDM Vol 3D) https://software.intel.com/sites/default/files/managed/7c/f1/332831-sdm-vol-3d.pdf - Paper: Intel SGX Explained htt

[Xen-devel] [PATCH v2 09/17] xen: x86: add functions to populate and destroy EPC for domain

tel.com> Signed-off-by: Boqun Feng <boqun.f...@intel.com> --- xen/arch/x86/hvm/vmx/vmx.c | 3 + xen/arch/x86/sgx.c | 340 + xen/include/asm-x86/hvm/vmx/vmcs.h | 2 + xen/include/asm-x86/sgx.h | 13 ++ 4 files changed