Mailing List Archive

commit 3ccaa174faeb8fbd68f79c670e32c6689cfc7ffc
Author: Andrew Cooper <andrew.cooper3@citrix.com>
AuthorDate: Thu Jun 10 11:02:47 2021 +0100
Commit: Andrew Cooper <andrew.cooper3@citrix.com>
CommitDate: Tue Jun 15 20:50:32 2021 +0100

x86/platform: Permit reading the TSX control MSRs via XENPF_resource_op

We are going to want this to write some tests with.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
---
xen/arch/x86/platform_hypercall.c | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/xen/arch/x86/platform_hypercall.c b/xen/arch/x86/platform_hypercall.c
index 41d8e59563..284c2dfb9e 100644
--- a/xen/arch/x86/platform_hypercall.c
+++ b/xen/arch/x86/platform_hypercall.c
@@ -74,6 +74,12 @@ static bool msr_read_allowed(unsigned int msr)

case MSR_IA32_TSC:
return true;
+
+ case MSR_TSX_FORCE_ABORT:
+ return cpu_has_tsx_force_abort;
+
+ case MSR_TSX_CTRL:
+ return cpu_has_tsx_ctrl;
}

if ( ppin_msr && msr == ppin_msr )
--
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