On 18/03/2024 6:13 pm, Andrew Cooper wrote:
> All of these are informational and require no further logic changes in Xen to
> support.
>
> Signed-off-by: Andrew Cooper <andrew.coop...@citrix.com>
> ---
> CC: Jan Beulich <jbeul...@suse.com>
> CC: Roger Pau Monné <roger....@citrix.com>
>
> I'm not sure about FSRSC as a name, but it definitely beats AMD's longhand
> name of FAST_REP_SCASB.
> ---
> tools/misc/xen-cpuid.c | 5 +++++
> xen/include/public/arch-x86/cpufeatureset.h | 8 ++++++++
> 2 files changed, 13 insertions(+)
>
> diff --git a/tools/misc/xen-cpuid.c b/tools/misc/xen-cpuid.c
> index 51efbff579e6..b562ee839d38 100644
> --- a/tools/misc/xen-cpuid.c
> +++ b/tools/misc/xen-cpuid.c
> @@ -91,6 +91,7 @@ static const char *const str_e1c[32] =
> [24] = "perfctr-nb", /* [25] */
> [26] = "dbx", [27] = "perftsc",
> [28] = "pcx-l2i", [29] = "monitorx",
> + [30] = "dbext2",
> };
>
> static const char *const str_7b0[32] =
> @@ -199,11 +200,15 @@ static const char *const str_7a1[32] =
>
> static const char *const str_e21a[32] =
> {
> + [ 0] = "no-nest-bp", [ 1] = "fs-gs-ns",
> [ 2] = "lfence+",
> [ 6] = "nscb",
> [ 8] = "auto-ibrs",
> + [10] = "amd-fsrs", [11] = "amd-fsrc",
>
> /* 16 */ [17] = "cpuid-user-dis",
> + [18] = "epsf", [19] = "fsrsc",
It occurs to me that I need this hunk too.
diff --git a/xen/tools/gen-cpuid.py b/xen/tools/gen-cpuid.py
index 25d329ce486f..bf3f9ec01e6e 100755
--- a/xen/tools/gen-cpuid.py
+++ b/xen/tools/gen-cpuid.py
@@ -329,6 +329,10 @@ def crunch_numbers(state):
# In principle the TSXLDTRK insns could also be considered
independent.
RTM: [TSXLDTRK],
+ # Enhanced Predictive Store-Forwarding is a informational note
on top
+ # of PSF.
+ PSFD: [EPSF],
+
# The ARCH_CAPS CPUID bit enumerates the availability of the
whole register.
ARCH_CAPS: list(range(RDCL_NO, RDCL_NO + 64)),
To cause EPSF to disappear properly when levelling.
~Andrew
