diff options
Diffstat (limited to '0009-x86-time-prevent-overflow-with-high-frequency-TSCs.patch')
| -rw-r--r-- | 0009-x86-time-prevent-overflow-with-high-frequency-TSCs.patch | 34 |
1 files changed, 0 insertions, 34 deletions
diff --git a/0009-x86-time-prevent-overflow-with-high-frequency-TSCs.patch b/0009-x86-time-prevent-overflow-with-high-frequency-TSCs.patch deleted file mode 100644 index a9401d7..0000000 --- a/0009-x86-time-prevent-overflow-with-high-frequency-TSCs.patch +++ /dev/null @@ -1,34 +0,0 @@ -From a7a26da0b59da7233e6c6f63b180bab131398351 Mon Sep 17 00:00:00 2001 -From: Neowutran <xen@neowutran.ovh> -Date: Tue, 20 Dec 2022 13:46:38 +0100 -Subject: [PATCH 09/89] x86/time: prevent overflow with high frequency TSCs - -Make sure tsc_khz is promoted to a 64-bit type before multiplying by -1000 to avoid an 'overflow before widen' bug. Otherwise just above -4.294GHz the value will overflow. Processors with clocks this high are -now in production and require this to work correctly. - -Signed-off-by: Neowutran <xen@neowutran.ovh> -Reviewed-by: Jan Beulich <jbeulich@suse.com> -master commit: ad15a0a8ca2515d8ac58edfc0bc1d3719219cb77 -master date: 2022-12-19 11:34:16 +0100 ---- - xen/arch/x86/time.c | 2 +- - 1 file changed, 1 insertion(+), 1 deletion(-) - -diff --git a/xen/arch/x86/time.c b/xen/arch/x86/time.c -index b01acd390d..d882b43cf0 100644 ---- a/xen/arch/x86/time.c -+++ b/xen/arch/x86/time.c -@@ -2585,7 +2585,7 @@ int tsc_set_info(struct domain *d, - case TSC_MODE_ALWAYS_EMULATE: - d->arch.vtsc_offset = get_s_time() - elapsed_nsec; - d->arch.tsc_khz = gtsc_khz ?: cpu_khz; -- set_time_scale(&d->arch.vtsc_to_ns, d->arch.tsc_khz * 1000); -+ set_time_scale(&d->arch.vtsc_to_ns, d->arch.tsc_khz * 1000UL); - - /* - * In default mode use native TSC if the host has safe TSC and --- -2.40.0 - |